Ottawa Valley Native Plant Directory

▶ How to read this table

Sun (1-5)

1Deep shade (conifer or mixed conifer forest)

2Spring sun (hardwood forest; shaded in summer)

3Part shade / part sun

4Mostly sunny (6+ hrs)

5Full sun (8+ hrs direct sun)

Multiple values = tolerates a range

Water / Moisture (1-7)

1Very dry (xeric, sandy/rocky soils)

2Dry (well-drained, low organic matter)

3Dry-mesic (slightly dry but not harsh)

4Mesic (average, well-drained loam)

5Moist (consistently moist, not wet)

6Wet (saturated soils, seasonal flooding)

7Aquatic (standing or slow-moving water)

Rarity Ranks (NatureServe)

N/SN = national, S = provincial

1Critically imperiled (≤5 populations)

2Imperiled (6-20 populations)

3Vulnerable (21-100 populations)

4Apparently secure

5Secure (common and widespread)

?Unranked or uncertain

Other columns

BloomMonths when the plant flowers

RarityCA/ON/QC — red = rare, green = secure

WildlifeHummingbirds, Monarch, pollinators, birds

Click any row to expand full details

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Ottawa Valley Native Plant Directory — Full Species List

Searchable reference of 1,196 plant species native to the Ottawa Valley and eastern North America, within 100 km of Parliament Hill, Ottawa, Ontario. Includes ecological data: sun exposure, moisture, soil, bloom season, and wildlife value for native plants including trees, shrubs, wildflowers, ferns, grasses, sedges, and aquatic plants.

Acoraceae

Acorus americanus — American Sweet-Flag / Acore d'Amérique (Herbaceous, blooms Jun, Jul)

Adoxaceae

Sambucus canadensis — American Black Elderberry / Sureau du Canada (Shrub, blooms Jun, Jul)
Sambucus racemosa — Red-berried Elder / Sureau rouge (Shrub, blooms May, Jun)
Viburnum acerifolium — Mapleleaf Viburnum / Viorne à feuilles d'érable (Shrub, blooms May, Jun)
Viburnum cassinoides — Northern Wild Raisin / Viorne cassinoïde (Shrub, blooms Jun, Jul)
Viburnum lantanoides — Hobblebush / Viorne à feuilles d'aulne (Shrub, blooms May, Jun)
Viburnum lentago — Nannyberry / Viorne lentago (Shrub, blooms May, Jun)
Viburnum rafinesqueanum — Downy Arrowwood / Viorne de Rafinesque (Shrub, blooms May, Jun)
Viburnum recognitum — Northern Arrowwood / Viorne à feuilles dentées (Shrub, blooms Jun, Jul)
Viburnum trilobum — American Hughbush Cranberry / Viorne trilobée (Shrub, blooms May, Jun)

Alismataceae

Alisma gramineum — Grass-leaved Water-Plantain / Plantain d'eau graminiforme (Aquatic, blooms Jul, Aug, Sep)
Alisma subcordatum — American Water-Plantain / Plantain d'eau subcordé (Aquatic, blooms Jul, Aug, Sep)
Alisma triviale — Northern Water-Plantain / Plantain d'eau commun (Aquatic, blooms Jul, Aug, Sep)
Sagittaria cuneata — Arumleaf Arrowhead / Sagittaire cunéiforme (Aquatic, blooms Jul, Aug, Sep)
Sagittaria graminea — Grass-leaved Arrowhead / Sagittaire à feuilles de graminée (Aquatic, blooms Jul, Aug, Sep)
Sagittaria latifolia — Broadleaf Arrowhead / Sagittaire à larges feuilles (Aquatic, blooms Jul, Aug, Sep)
Sagittaria rigida — Sessile-fruited Arrowhead / Sagittaire rigide (Aquatic, blooms Jul, Aug)

Amaranthaceae

Amaranthus tuberculatus — Water-hemp / Amarante tuberculée (Herbaceous, blooms Aug, Sep)
Blitum capitatum — Beetberry / Blite capitée (Herbaceous)
Chenopodiastrum simplex — American Maple-leaved Goosefoot / Chénopode simple (Herbaceous)
Oxybasis rubra — Red Goosefoot / Chénopode rouge (Herbaceous, blooms Jul, Aug; Naturalized in Region)

Amaryllidaceae

Allium canadense — Canada Onion / Ail du Canada (Herbaceous, blooms May, Jun)
Allium schoenoprasum — Chives / Ciboulette (Herbaceous, blooms Jun, Jul)
Allium tricoccum — Wide Leek / Ail des bois (Herbaceous, blooms Jun)

Anacardiaceae

Rhus aromatica — Fragrant Sumac / Sumac aromatique (Shrub, blooms Apr, May; Rare in Region)
Rhus glabra — Smooth Sumac / Sumac glabre (Shrub, blooms Apr, May; Rare in Region)
Rhus typhina — Staghorn Sumac / Sumac vinaigrier (Shrub, blooms Jun, Jul)
Toxicodendron radicans — Eastern Poison Ivy / Herbe à la puce (Vine)
Toxicodendron rydbergii — Western Poison Ivy / Herbe à la puce de l'Ouest (Shrub)
Toxicodendron vernix — Poison Sumac / Sumac vénéneux (Shrub)

Apiaceae

Angelica atropurpurea — Purple-stemmed Angelica / Angélique pourpre (Herbaceous, blooms Jun, Jul)
Cicuta bulbifera — Bulblet-bearing Water Hemlock / Cicutaire bulbifère (Herbaceous, blooms Jul, Aug)
Cicuta maculata — Water Hemlock / Cicutaire maculée (Herbaceous, blooms Jun, Jul, Aug)
Cryptotaenia canadensis — Honewort / Cryptotène du Canada (Herbaceous, blooms Jun, Jul)
Heracleum maximum — Common Cowparsnip / Berce très grande (Herbaceous, blooms Jun, Jul)
Hydrocotyle americana — American Water-Pennywort / Hydrocotyle d'Amérique (Herbaceous)
Osmorhiza claytonii — Hairy Sweet Cicely / Osmorhize de Clayton (Herbaceous, blooms May, Jun)
Osmorhiza longistylis — Aniseroot / Osmorhize à long style (Herbaceous, blooms May, Jun)
Sanicula canadensis — Canadian Sanicle / Sanicle du Canada (Herbaceous, blooms Jun; Old record / Unconfirmed)
Sanicula marilandica — Maryland Sanicle / Sanicle du Maryland (Herbaceous, blooms Jun)
Sanicula odorata — Clustered Sanicle / Sanicle odorante (Herbaceous, blooms Jun)
Sanicula trifoliata — Large-fruited Sanicle / Sanicle trifoliée (Herbaceous, blooms Jun; Rare in Region)
Sium suave — Water Parsnip / Berle douce (Herbaceous, blooms Jul, Aug)
Zizia aurea — Golden Alexanders / Zizia doré (Herbaceous, blooms May, Jun)

Apocynaceae

Apocynum androsaemifolium — Spreading Dogbane / Apocyn à feuilles d'androsème (Herbaceous, blooms Jun, Jul, Aug)
Apocynum cannabinum — Hemp Dogbane / Apocyn chanvrin (Herbaceous, blooms Jun, Jul)
Apocynum ×f loribundum — Dogbane / Apocyn intermédiaire (Herbaceous, blooms Jun, Jul)
Asclepias exaltata — Poke Milkweed / Asclépiade élevée (Herbaceous, blooms Jun, Jul; Outside of Ottawa Valley)
Asclepias incarnata — Swamp Milkweed / Asclépiade incarnate (Herbaceous, blooms Jun, Jul, Aug)
Asclepias syriaca — Common Milkweed / Asclépiade commune (Herbaceous, blooms Jun, Jul)
Asclepias tuberosa — Butterfly Milkweed / Asclépiade tubéreuse (Herbaceous, blooms Jun, Jul, Aug; Rare in Region)

Aquifoliaceae

Ilex mucronata — Mountain Holly / Némopanthe mucroné (Shrub, blooms May, Jun)
Ilex verticillata — Winterberry Holly / Houx verticillé (Shrub, blooms Jun)

Araceae

Arisaema stewardsonii — bog Jack-in-the-pulpit / arisème de Stewardson (Herbaceous, blooms May, Jun; Rare in Region)
Arisaema triphyllum — Jack-in-the-Pulpit / Arisème triphylle (Herbaceous, blooms May, Jun)
Calla palustris — Marsh Calla / Calla des marais (Aquatic, blooms Jun, Jul)
Lemna minor — Common Duckweed / Lenticule mineure (Aquatic)
Lemna trisulca — Ivy-leaved Duckweed / Lenticule trisulquée (Aquatic)
Lemna turionifera — Turion Duckweed / Lenticule à turions (Aquatic)
Peltandra virginica — Green Arrow Arum / Peltandre de Virginie (Aquatic, blooms Jun, Jul)
Spirodela polyrhiza — Greater Duckweed / Spirodèle à plusieurs racines (Aquatic)
Symplocarpus foetidus — Eastern Skunk Cabbage / Symplocarpus fétide (Herbaceous, blooms Mar, Apr)
Wolffia borealis — Dotted Watermeal / Wolffia boréale (Aquatic)
Wolffia columbiana — Columbian Watermeal / Wolffia de Colombie (Aquatic)

Araliaceae

Aralia hispida — Bristly Sarsaparilla / Aralie hispide (Shrub, blooms Jun, Jul)
Aralia nudicaulis — Wild Sarsaparilla / Aralie à tige nue (Herbaceous, blooms May, Jun)
Aralia racemosa — American Spikenard / Aralie à grappes (Herbaceous, blooms Jun, Jul)
Panax quinquefolius — American Ginseng / Ginseng à cinq folioles (Herbaceous, blooms Jun, Jul)
Panax trifolius — Dwarf Ginseng / Ginseng à trois feuilles (Herbaceous, blooms May)

Aristolochiaceae

Asarum canadense — Canadian Wild Ginger / Asaret du Canada (Herbaceous, blooms May)

Asparagaceae

Maianthemum canadense — Canada Mayflower / Maïanthème du Canada (Herbaceous, blooms May, Jun)
Maianthemum racemosum — Solomon's Plume / Maïanthème à grappes (Herbaceous, blooms May, Jun)
Maianthemum stellatum — Star-flowered Lily-of-the-Valley / Maïanthème étoilé (Herbaceous, blooms May, Jun)
Maianthemum trifolium — Three-leaved False Solomon’s Seal / Maïanthème trifolié (Herbaceous, blooms Jun)
Polygonatum pubescens — Hairy Solomon's-Seal / Sceau-de-Salomon pubescent (Herbaceous, blooms May, Jun)

Aspleniaceae

Asplenium platyneuron — Ebony Spleenwort / Asplénium à nervures plates (Fern)
Asplenium rhizophyllum — Walking Fern / Doradille à feuilles radicantes (Fern)
Asplenium trichomanes — Maidenhair Spleenwort / Capillaire rouge (Fern)
Homalosorus pycnocarpos — Narrow-leaved Glade Fern / Asplénium à sores serrés (Fern)

Asteraceae

Achillea millefolium — Common Yarrow / Achillée millefeuille (Herbaceous, blooms Jun, Jul, Aug, Sep)
Ageratina altissima — White Snakeroot / Eupatoire rugueuse (Herbaceous, blooms Aug, Sep, Oct)
Ambrosia artemisiifolia — Common Ragweed / Ambroisie à feuilles d'armoise (Herbaceous)
Ambrosia trifida — Giant Ragweed / Ambroisie trifide (Herbaceous; Naturalized in Region)
Anaphalis margaritacea — Pearly Everlasting / Anaphale marguerite (Herbaceous, blooms Jul, Aug, Sep)
Antennaria howellii — Small Pussytoes / Antennaire de Howell (Herbaceous, blooms May, Jun)
Antennaria neglecta — Field Pussytoes / Antennaire négligée (Herbaceous, blooms May)
Antennaria parlinii — Parlin's Pussytoes / Antennaire de Parlin (Herbaceous, blooms May)
Artemisia campestris — Field Sagewort / Armoise des champs (Herbaceous)
Artemisia ludoviciana — Silver Wormwood / Armoise de Louisiane (Herbaceous; Naturalized in Region)
Bidens beckii — Water Marigold / Bident de Beck (Aquatic, blooms Aug, Sep)
Bidens cernua — Nodding Beggarticks / Bident penché (Herbaceous, blooms Aug, Sep, Oct)
Bidens connata — Purplestem Beggarticks / Bident connée (Herbaceous, blooms Aug, Sep, Oct)
Bidens discoidea — Swamp Beggarticks / Bident disciforme (Herbaceous, blooms Aug, Sep)
Bidens frondosa — Devil's Beggarticks / Bident feuillé (Herbaceous, blooms Aug, Sep)
Bidens tripartita — Three-parted Beggarticks / Bident tripartite (Herbaceous, blooms Aug, Sep)
Bidens vulgata — Tall Beggarticks / Bident vulgaire (Herbaceous, blooms Aug, Sep)
Cirsium discolor — Field Thistle / Chardon bicolore (Herbaceous, blooms Jul, Aug, Sep; Rare in Region)
Cirsium muticum — Swamp Thistle / Chardon mutique (Herbaceous, blooms Jul, Aug, Sep)
Coreopsis lanceolata — Lance-leaved Coreopsis / Coréopsis lancéolé (Herbaceous, blooms Jun, Jul; Naturalized in Region)
Doellingeria umbellata — Flat-top White Aster / Aster à ombelle (Herbaceous, blooms Aug, Sep)
Erechtites hieraciifolius — American Burnweed / Érechtite à feuilles d'épervière (Herbaceous)
Erigeron annuus — Annual Fleabane / Vergerette annuelle (Herbaceous, blooms Jun, Jul, Aug)
Erigeron canadensis — Horseweed / Vergerette du Canada (Herbaceous)
Erigeron philadelphicus — Philadelphia Fleabane / Vergerette de Philadelphie (Herbaceous, blooms May, Jun, Jul)
Erigeron strigosus — Daisy Fleabane / Vergerette strigoïde (Herbaceous, blooms Jun, Jul)
Eupatorium perfoliatum — Common Boneset / Eupatoire perfoliée (Herbaceous, blooms Aug, Sep)
Eurybia macrophylla — Large-leaved Aster / Aster à grandes feuilles (Herbaceous, blooms Aug, Sep)
Euthamia graminifolia — Flat-topped Goldenrod / Solidage graminiforme (Herbaceous, blooms Aug, Sep, Oct)
Eutrochium maculatum — Spotted Joe-Pye Weed / Eupatoire maculée (Herbaceous, blooms Jul, Aug, Sep)
Helenium autumnale — Common Sneezeweed / Hélénie automnale (Herbaceous, blooms Aug, Sep, Oct)
Helianthus annuus — Common Sunflower / Tournesol annuel (Herbaceous, blooms Jul, Aug, Sep; Naturalized in Region)
Helianthus divaricatus — Woodland Sunflower / Tournesol divariqué (Herbaceous, blooms Jul, Aug, Sep)
Helianthus strumosus — Pale-leaved Woodland Sunflower / Tournesol strumeux (Herbaceous, blooms Jul, Aug, Sep)
Helianthus tuberosus — Jerusalem Artichoke / Topinambour (Herbaceous, blooms Aug, Sep, Oct)
Heliopsis helianthoides — False Sunflower / Héliopsis faux-hélianthe (Herbaceous, blooms Jun, Jul, Aug, Sep)
Hieracium paniculatum — Panicled Hawkweed / Épervière paniculée (Herbaceous, blooms Jul, Aug; Old record / Unconfirmed)
Hieracium scabrum — Rough Hawkweed / Épervière scabre (Herbaceous, blooms Jul, Aug)
Hieracium umbellatum — Canada Hawkweed / Épervière ombellée (Herbaceous, blooms Aug, Sep)
Lactuca biennis — Tall Blue Lettuce / Laitue bisannuelle (Herbaceous, blooms Jul, Aug, Sep)
Lactuca canadensis — Canada Wild Lettuce / Laitue du Canada (Herbaceous, blooms Jul, Aug, Sep)
Lactuca hirsuta — Hairy Lettuce / Laitue hirsute (Herbaceous)
Nabalus alba — White-lettuce / Nabalus blanc (Herbaceous, blooms Aug, Sep)
Nabalus albus — White Rattlesnake Root / Nabalus blanc (Herbaceous, blooms Aug, Sep)
Nabalus altissimus — Tall Rattlesnake Root / Nabalus très grand (Herbaceous, blooms Aug, Sep)
Nabalus racemosus — Purple Rattlesnake Root / Nabalus à grappes (Herbaceous, blooms Aug, Sep)
Oclemena acuminata — Whorled Wood Aster / Aster acuminé (Herbaceous, blooms Jul, Aug)
Oclemena nemoralis — Bog Aster / Aster des marécages (Herbaceous, blooms Aug, Sep)
Packera aurea — Golden Ragwort / Séneçon doré (Herbaceous, blooms May, Jun)
Packera paupercula — Balsam Ragwort / Séneçon des tourbières (Herbaceous, blooms Jun, Jul)
Petasites frigidus — Arctic Butterbur / Pétasite froid (Herbaceous, blooms Apr, May)
Pseudognaphalium macounii — Macoun's Everlasting / Gnaphale de Macoun (Herbaceous, blooms Aug, Sep)
Pseudognaphalium obtusifolium — Sweet Everlasting / Gnaphale à feuilles obtuses (Herbaceous, blooms Aug, Sep, Oct)
Rudbeckia fulgida — Orange Coneflower / Rudbeckie brillante (Herbaceous, blooms Jul, Aug, Sep; Naturalized in Region)
Rudbeckia hirta — Black-eyed Susan / Rudbeckie hérissée (Herbaceous, blooms Jun, Jul, Aug, Sep; Naturalized in Region)
Rudbeckia laciniata — Cutleaf Coneflower / Rudbeckie laciniée (Herbaceous, blooms Jul, Aug, Sep)
Solidago altissima — Tall Goldenrod / Verge d'or très grande (Herbaceous, blooms Aug, Sep, Oct)
Solidago bicolor — Silverrod / Verge d'or bicolore (Herbaceous, blooms Aug, Sep)
Solidago caesia — Bluestem Goldenrod / Verge d'or bleuâtre (Herbaceous, blooms Sep, Oct)
Solidago canadensis — Canada Goldenrod / Verge d'or du Canada (Herbaceous, blooms Aug, Sep, Oct)
Solidago flexicaulis — Broad-leaved Goldenrod / Verge d'or à tige flexueuse (Herbaceous, blooms Aug, Sep)
Solidago gigantea — Giant Goldenrod / Verge d'or géante (Herbaceous, blooms Aug, Sep)
Solidago hispida — Hairy Goldenrod / Verge d'or hispide (Herbaceous, blooms Aug, Sep)
Solidago juncea — Early Goldenrod / Verge d'or joncoïde (Herbaceous, blooms Jul, Aug)
Solidago nemoralis — Field Goldenrod / Verge d'or des bois (Herbaceous, blooms Aug, Sep, Oct)
Solidago ptarmicoides — White Flat-topped Goldenrod / Verge d'or ptarmicoïde (Herbaceous, blooms Jul, Aug, Sep)
Solidago puberula — Downy Goldenrod / Verge d'or pubérulente (Herbaceous, blooms Aug, Sep)
Solidago rugosa — Common Wrinkle-leaved Goldenrod / Verge d'or rugueuse (Herbaceous, blooms Sep, Oct)
Solidago squarrosa — Squarrose Goldenrod / Verge d'or squarreuse (Herbaceous, blooms Aug, Sep, Oct)
Solidago uliginosa — Bog Goldenrod / Verge d'or des tourbières (Herbaceous, blooms Aug, Sep)
Symphyotrichum boreale — Northern Bog Aster / Aster boréal (Herbaceous, blooms Aug, Sep)
Symphyotrichum ciliatum — Rayless Annual Aster / Aster cilié (Herbaceous, blooms Sep, Oct)
Symphyotrichum ciliolatum — Lindley's Aster / Aster ciliolé (Herbaceous, blooms Aug, Sep)
Symphyotrichum cordifolium — Common Blue Wood Aster / Aster à feuilles cordées (Herbaceous, blooms Sep, Oct)
Symphyotrichum ericoides — White Heath Aster / Aster ériciforme (Herbaceous, blooms Sep, Oct)
Symphyotrichum firmum — Shining Aster / Aster ferme (Herbaceous, blooms Aug, Sep)
Symphyotrichum laeve — Smooth Blue Aster / Aster lisse (Herbaceous, blooms Aug, Sep, Oct; Naturalized in Region)
Symphyotrichum lanceolatum — Panicled Aster / Aster lancéolé (Herbaceous, blooms Aug, Sep, Oct)
Symphyotrichum lateriflorum — Calico Aster / Aster à fleurs latérales (Herbaceous, blooms Sep, Oct)
Symphyotrichum novae-angliae — New England Aster / Aster de la Nouvelle-Angleterre (Herbaceous, blooms Aug, Sep, Oct)
Symphyotrichum ontarionis — Ontario Aster / Aster de l'Ontario (Herbaceous, blooms Sep, Oct)
Symphyotrichum pilosum — Hairy White Oldfield Aster / Aster pileux (Herbaceous, blooms Sep, Oct)
Symphyotrichum puniceum — Swamp Aster / Aster ponceau (Herbaceous, blooms Aug, Sep, Oct)
Symphyotrichum tradescanti — Tradescant's Aster / Symphotrique de Tradescant (Herbaceous, blooms Aug, Sep; Old record / Unconfirmed)
Xanthium strumarium — Rough Cocklebur / Lampourde glouteron (Herbaceous)

Athyriaceae

Athyrium angustum — Northern Lady Fern / Fougère femelle (Fern)
Deparia acrostichoides — Silvery Glade Fern / Athyrium en faux-acrostiche (Fern)

Balsaminaceae

Impatiens capensis — Common Jewelweed / Impatiente du Cap (Herbaceous)

Berberidaceae

Caulophyllum giganteum — Early Blue Cohosh / Caulophylle géant (Herbaceous, blooms Apr, May)
Caulophyllum thalictroides — Blue Cohosh / Caulophylle faux-pigamon (Herbaceous, blooms Apr, May)
Podophyllum peltatum — Mayapple / Podophylle pelté (Herbaceous, blooms May)

Betulaceae

Alnus alnobetula — Green Alder / Aulne crispé (Shrub)
Alnus incana — Grey Alder / Aulne rugueux (Tree)
Alnus serrulata — Smooth Alder / Aulne tendre (Shrub, blooms May)
Betula alleghaniensis — Yellow Birch / Bouleau jaune (Tree)
Betula cordifolia — Heartleaf birch / Bouleau à coeur cordé (Tree, blooms May; Old record / Unconfirmed)
Betula papyrifera — Paper Birch / Bouleau à papier (Tree)
Betula populifolia — Gray Birch / Bouleau à feuilles de peuplier (Tree)
Betula pumila — Swamp Birch / Bouleau nain (Shrub)
Carpinus caroliniana — American Hornbeam / Charme de Caroline (Tree)
Corylus americana — American Hazelnut / Noisetier d'Amérique (Shrub)
Corylus cornuta — Beaked Hazelnut / Noisetier à long bec (Shrub)
Ostrya virginiana — American Hophornbeam / Ostryer de Virginie (Tree)

Blechnaceae

Woodwardia virginica — Virginia Chainfern / Woodwardie de Virginie (Fern)

Boraginaceae

Andersonglossum boreale — Northern Wild Comfrey / Cynoglosse boréale (Herbaceous)
Hackelia deflexa — American Stickseed / Hackélie défléchie (Herbaceous, blooms Jun, Jul)
Hackelia virginiana — Virginia Stickseed / Hackélie de Virginie (Herbaceous)
Hydrophyllum virginianum — Virginia Waterleaf / Hydrophylle de Virginie (Herbaceous, blooms May, Jun)
Lithospermum caroliniense — Hairy Puccoon / Grémil de Caroline (Herbaceous; Rare in Region)
Myosotis laxa — Small-flowered Forget-me-not / Myosotis lâche (Herbaceous, blooms May, Jun)

Brassicaceae

Arabis pycnocarpa — Slender Rockcress / Arabette à fruits serrés (Herbaceous, blooms May, Jun; Rare in Region)
Boechera grahamii — Graham's Rockcress / Arabette de Graham (Herbaceous, blooms May, Jun)
Boechera retrofracta — Reflexed Rockcress / Arabette réfractée (Herbaceous, blooms May, Jun; Rare in Region)
Boechera stricta — Gray Drummond's Rock-cress / Boechère stricte (Herbaceous, blooms May, Jun)
Borodinia canadensis — Sicklepod / Arabette du Canada (Herbaceous, blooms May, Jun; Rare in Region)
Cardamine bulbosa — Bulbous Cress / Cardamine bulbeuse (Herbaceous, blooms Apr, May; Rare in Region)
Cardamine concatenata — Cut-leaved Toothwort / Cardamine concaténée (Herbaceous, blooms Apr, May; Rare in Region)
Cardamine dentata — white cuckoo-flower / cardamine dentée (Herbaceous, blooms May, Jun; Rare in Region)
Cardamine diphylla — Two-leaved Toothwort / Cardamine à deux feuilles (Herbaceous, blooms Apr, May)
Cardamine parviflora — Bitter-cress / Cardamine à petites fleurs (Herbaceous, blooms May, Jun)
Cardamine pensylvanica — Pennsylvania Bittercress / Cardamine de Pennsylvanie (Herbaceous, blooms May, Jun)
Cardamine ×maxima — Wood Large Toothwort / Cardamine maxima (Herbaceous, blooms May)
Draba cana — Hoary Whitlowgrass / Drave blanc-grisâtre (Herbaceous, blooms May, Jun; Rare in Region)
Draba nemorosa — Wood Whitlow-Grass / Drave des bois (Herbaceous, blooms Apr, May; Rare in Region)
Erysimum inconspicuum — Prairie Rocket / Vélar peu apparent (Herbaceous, blooms May, Jun; Old record / Unconfirmed)
Lepidium densiflorum — Common Peppergrass / Lépide densiflore (Herbaceous; Naturalized in Region)
Neobeckia aquatica — Greene Lake Cress / Néobeckie aquatique (Herbaceous, blooms Jun, Jul)
Rorippa aquatica — Lake-Cress / Rorippe aquatique (Aquatic, blooms Jun, Jul; Rare in Region)
Rorippa palustris — Bog Yellowcress / Rorippe des marais (Herbaceous, blooms Jun, Jul, Aug)
Turritis glabra — Tower Mustard / Tour-de-Babel glabre (Herbaceous, blooms May, Jun)

Cabombaceae

Brasenia schreberi — Watershield / Brasénie de Schreber (Aquatic, blooms Jun, Jul, Aug)

Cactaceae

Opuntia fragilis — Brittle Prickly-pear Cactus / Oponce fragile (Herbaceous, blooms Jun, Jul; Naturalized in Region)
Opuntia polyacantha — Plains Pricklypear / Oponce à nombreuses épines (Herbaceous, blooms Jun, Jul; Naturalized in Region)

Campanulaceae

Campanula giesekiana — Giesecke's Harebell / Campanule de Giesecke (Herbaceous, blooms Jul, Aug)
Campanula intercedens — Intermediate Bellflower / Campanule intermédiaire (Herbaceous, blooms Jul, Aug)
Lobelia cardinalis — Cardinal Flower / Lobélie cardinale (Herbaceous, blooms Jul, Aug, Sep)
Lobelia dortmanna — Water Lobelia / Lobélie de Dortmann (Aquatic, blooms Jul, Aug)
Lobelia inflata — Indian Tobacco / Lobélie gonflée (Herbaceous, blooms Jul, Aug, Sep)
Lobelia kalmii — Kalm's Lobelia / Lobélie de Kalm (Herbaceous, blooms Jul, Aug)
Lobelia siphilitica — Great Blue Lobelia / Lobélie syphilitique (Herbaceous, blooms Aug, Sep; Rare in Region)
Lobelia spicata — Pale-spiked Lobelia / Lobélie en épi (Herbaceous, blooms Jun, Jul, Aug; Rare in Region)
Palustricodon aparinoides — Marsh Bellflower / Campanule des marais (Herbaceous, blooms Jun, Jul, Aug; Rare in Region)

Cannabaceae

Celtis occidentalis — Common Hackberry / Micocoulier occidental (Tree)
Humulus Americanus — American Hops / Houblon d'Amérique (Vine; Rare in Region)

Caprifoliaceae

Diervilla lonicera — Northern Bush Honeysuckle / Dierville chèvrefeuille (Shrub, blooms Jun, Jul)
Linnaea borealis — Twinflower / Linnée boréale (Shrub, blooms Jun, Jul)
Lonicera canadensis — American Fly-Honeysuckle / Chèvrefeuille du Canada (Shrub, blooms Apr, May)
Lonicera dioica — Glaucous Honeysuckle / Chèvrefeuille dioïque (Vine, blooms May, Jun)
Lonicera hirsuta — Hairy Honeysuckle / Chèvrefeuille hirsute (Vine, blooms Jun, Jul)
Lonicera oblongifolia — Swamp Fly Honeysuckle / Chèvrefeuille à feuilles oblongues (Shrub, blooms May, Jun)
Lonicera villosa — Mountain Fly-Honeysuckle / Chèvrefeuille villeux (Shrub, blooms May, Jun; Rare in Region)
Symphoricarpos albus — Common Snowberry / Symphorine blanche (Shrub, blooms Jun, Jul)
Triosteum aurantiacum — Orange-fruited Horse Gentian / Triostein orangé (Herbaceous, blooms May, Jun; Rare in Region)
Valeriana uliginosa — Marsh Valerian / Valériane des tourbières (Shrub, blooms May, Jun; Rare in Region)

Caryophyllaceae

Cerastium arvense — Field Chickweed / Céraiste des champs (Herbaceous)
Cerastium brachypodum — Nodding Chickweed / Céraiste brachypode (Herbaceous, blooms May, Jun; Rare in Region)
Moehringia lateriflora — Bluntleaf Sandwort / Moehringie à fleurs latérales (Herbaceous; Rare in Region)
Sabulina michauxii — Rock Sandwort / Sabline de Michaux (Herbaceous; Rare in Region)
Silene antirrhina — Sleepy Catchfly / Silène antirrhinoïde (Herbaceous; Rare in Region)
Spergularia marina — Saltmarsh Sand Spurry / Spergulaire marine (Herbaceous; Naturalized in Region)
Stellaria borealis — Bigel Northern Stitchwort / Stellaire boréale (Herbaceous, blooms Jun, Jul; Rare in Region)
Stellaria longifolia — Long-leaved Chickweed / Stellaire à longues feuilles (Herbaceous, blooms May, Jun; Rare in Region)

Celastraceae

Celastrus scandens — American Bittersweet / Célastre grimpant (Vine)
Parnassia glauca — Fen Grass of Parnassus / Parnassie glauque (Herbaceous, blooms Aug, Sep; Rare in Region)

Ceratophyllaceae

Ceratophyllum demersum — Coontail / Cornifle submergée (Aquatic)
Ceratophyllum echinatum — Spineless Hornwort / Cornifle épineuse (Aquatic; Rare in Region)

Cistaceae

Crocanthemum bicknellii — Plains Frostweed / Hélianthème de Bicknell (Shrub; Rare in Region)
Crocanthemum canadense — Canada Frostweed / Hélianthème du Canada (Shrub; Rare in Region)
Hudsonia tomentosa — Woolly Beachheather / Hudsonie tomenteuse (Shrub; Rare in Region)
Lechea intermedia — Narrowleaf Pinweed / Léchée intermédiaire (Herbaceous; Rare in Region)

Cleomaceae

Polanisia dodecandra — Redwhisker Clammyweed / Polanisie à douze étamines (Herbaceous; Naturalized in Region)

Colchicaceae

Uvularia grandiflora — Largeflower Bellwort / Uvulaire à grandes fleurs (Herbaceous, blooms May)
Uvularia sessilifolia — Sessile Bellwort / Uvulaire à feuilles sessiles (Herbaceous, blooms May; Rare in Region)

Convolvulaceae

Calystegia sepium — Hedge Bindweed / Grand liseron (Vine, blooms Jun, Jul, Aug)
Calystegia spithamaea — Low False Bindweed / Liseron à tiges courtes (Herbaceous, blooms Jun, Jul)
Cuscuta gronovii — Scaldweed / Cuscute de Gronovius (Vine)

Cornaceae

Cornus alternifolia — Alternate-leaved Dogwood / Cornouiller à feuilles alternes (Tree, blooms May, Jun)
Cornus canadensis — Canadian Bunchberry / Quatre-temps (Herbaceous, blooms May, Jun)
Cornus obliqua — Blue-fruited Dogwood / Cornouiller oblique (Shrub, blooms Jun, Jul)
Cornus racemosa — Gray Dogwood / Cornouiller à grappes (Shrub, blooms Jun, Jul)
Cornus rugosa — Round-leaved Dogwood / Cornouiller rugueux (Shrub, blooms Jun)
Cornus sericea — Red Osier Dogwood / Cornouiller stolonifère (Shrub, blooms May, Jun, Jul)

Cucurbitaceae

Echinocystis lobata — Prickly Cucumber / Échinucystis lobé (Vine, blooms Jul, Aug)
Sicyos angulatus — Oneseed Bur Cucumber / Sicyos anguleux (Vine, blooms Jul, Aug; Rare in Region)

Cupressaceae

Juniperus communis var. depressa — American Common Juniper / Genévrier commun (Shrub)
Juniperus virginiana — Eastern Redcedar / Genévrier de Virginie (Tree)
Thuja occidentalis — Northern Whitecedar / Thuya occidental (Tree)

Cyperaceae

Bolboschoenus fluviatilis — River Bulrush / Scirpe fluviatile (Grass / Sedge / Rush)
Bulbostylis capillaris — Densetuft Hairsedge / Bulbostyle capillaire (Grass / Sedge / Rush; Rare in Region)
Carex albursina — White Bear Sedge / Carex des bois (Grass / Sedge / Rush)
Carex alopecoidea — Foxtail Sedge / Carex faux-vulpin (Grass / Sedge / Rush; Rare in Region)
Carex annectans — Yellow-Fruited Sedge / Carex annexe (Grass / Sedge / Rush, blooms May, Jun; Rare in Region)
Carex aquatilis — Water Sedge / Carex aquatique (Grass / Sedge / Rush; Rare in Region)
Carex arcta — Boott Bear Sedge / Carex arctique (Grass / Sedge / Rush, blooms Jun, Jul; Rare in Region)
Carex arctata — Drooping Woodland Sedge / Carex arqué (Grass / Sedge / Rush; Rare in Region)
Carex argyrantha — Silver sedge / Carex argenté (Grass / Sedge / Rush, blooms Jun; Rare in Region)
Carex atherodes — Wheat Sedge / Carex aristé (Grass / Sedge / Rush; Rare in Region)
Carex atlantica — Prickly bog sedge / Carex atlantique (Grass / Sedge / Rush, blooms May, Jun; Rare in Region)
Carex aurea — Golden Sedge / Carex doré (Grass / Sedge / Rush; Rare in Region)
Carex backii — Back's Sedge / Carex de Back (Grass / Sedge / Rush; Rare in Region)
Carex bebbii — Bebb's Sedge / Carex de Bebb (Grass / Sedge / Rush)
Carex billingsii — Billings' Sedge / Carex de Billings (Grass / Sedge / Rush)
Carex blanda — Eastern Woodland Sedge / Carex blandissant (Grass / Sedge / Rush; Rare in Region)
Carex brevior — Shortbeak Sedge / Carex plus court (Grass / Sedge / Rush; Rare in Region)
Carex bromoides — Brome-like Sedge / Carex bromoïde (Grass / Sedge / Rush)
Carex brunnescens — Brownish Sedge / Carex brunissant (Grass / Sedge / Rush)
Carex buxbaumii — Buxbaum's Sedge / Carex de Buxbaum (Grass / Sedge / Rush)
Carex canescens — Hoary Sedge / Carex blanchâtre (Grass / Sedge / Rush)
Carex castanea — Chestnut Sedge / Carex châtain (Grass / Sedge / Rush)
Carex cephaloidea — Thin-leaved Sedge / Carex céphalide (Grass / Sedge / Rush; Rare in Region)
Carex cephalophora — Oval-headed Sedge / Carex céphalophore (Grass / Sedge / Rush)
Carex chordorrhiza — Cord Sedge / Carex à rhizomes cordés (Grass / Sedge / Rush, blooms Jun; Rare in Region)
Carex communis — Fibrous-rooted Sedge / Carex commun (Grass / Sedge / Rush)
Carex comosa — Bristly Sedge / Carex comeux (Grass / Sedge / Rush; Rare in Region)
Carex concinna — Elegant Sedge / Carex coquet (Grass / Sedge / Rush, blooms May, Jun; Rare in Region)
Carex conoidea — Open-field Sedge / Carex conoïde (Grass / Sedge / Rush)
Carex crawei — Crawe's Sedge / Carex de Crawe (Grass / Sedge / Rush; Rare in Region)
Carex crawfordii — Crawford's Sedge / Carex de Crawford (Grass / Sedge / Rush; Rare in Region)
Carex crinita — Fringed Sedge / Carex crépu (Grass / Sedge / Rush)
Carex cristatella — Crested Sedge / Carex à crêtes (Grass / Sedge / Rush)
Carex cryptolepis — Northeastern Sedge / Carex à écailles cachées (Grass / Sedge / Rush; Rare in Region)
Carex cumulata — Clustered Sedge / Carex accumulé (Grass / Sedge / Rush, blooms Jun, Jul; Rare in Region)
Carex debilis — White-edge Sedge / Carex débile (Grass / Sedge / Rush; Rare in Region)
Carex deflexa — Northern Sedge / Carex défléchi (Grass / Sedge / Rush; Rare in Region)
Carex deweyana — Dewey's Sedge / Carex de Dewey (Grass / Sedge / Rush)
Carex diandra — Lesser Tussock Sedge / Carex à deux étamines (Grass / Sedge / Rush)
Carex disperma — Two-seeded Sedge / Carex à deux graines (Grass / Sedge / Rush)
Carex eburnea — Ivory Sedge / Carex éburné (Grass / Sedge / Rush; Rare in Region)
Carex echinata — Star Sedge / Carex étoilé (Grass / Sedge / Rush; Rare in Region)
Carex exilis — Meager Sedge / Carex grêle (Grass / Sedge / Rush; Rare in Region)
Carex festucacea — Fescue Sedge / Carex fescue (Grass / Sedge / Rush, blooms May, Jun; Rare in Region)
Carex flava — Yellow-green Sedge / Carex jaune (Grass / Sedge / Rush; Rare in Region)
Carex foenea — Copper Sedge / Carex des foins (Grass / Sedge / Rush, blooms May, Jun; Rare in Region)
Carex folliculata — Northern Long Sedge / Carex folliculé (Grass / Sedge / Rush; Rare in Region)
Carex formosa — Handsome Sedge / Carex élégant (Grass / Sedge / Rush)
Carex gracillima — Graceful Sedge / Carex très gracieux (Grass / Sedge / Rush)
Carex granularis — Limestone Meadow Sedge / Carex granuleux (Grass / Sedge / Rush)
Carex grayi — Gray's Sedge / Carex de Gray (Grass / Sedge / Rush; Rare in Region)
Carex grisea — Inflated Narrow-leaved Sedge / Carex grisâtre (Grass / Sedge / Rush; Rare in Region)
Carex gynandra — Nodding Sedge / Carex gynandromorphe (Grass / Sedge / Rush; Rare in Region)
Carex gynocrates — Drejer Ridged Sedge / Carex gynocrante (Grass / Sedge / Rush, blooms May, Jun; Rare in Region)
Carex haydenii — Hayden's Sedge / Carex de Hayden (Grass / Sedge / Rush; Rare in Region)
Carex hirtifolia — Hairy Sedge / Carex à feuilles velues (Grass / Sedge / Rush)
Carex hitchcockiana — Hitchcock's Sedge / Carex de Hitchcock (Grass / Sedge / Rush; Rare in Region)
Carex houghtoniana — Houghton's Sedge / Carex de Houghton (Grass / Sedge / Rush; Rare in Region)
Carex hystericina — Bottlebrush Sedge / Carex porc-épic (Grass / Sedge / Rush)
Carex interior — Inland Sedge / Carex intérieur (Grass / Sedge / Rush)
Carex intumescens — Bladder Sedge / Carex enflé (Grass / Sedge / Rush)
Carex lacustris — Lake Sedge / Carex lacustre (Grass / Sedge / Rush)
Carex lasiocarpa — Woolly-fruited Sedge / Carex à fruits velus (Grass / Sedge / Rush)
Carex laxiflora — Loose-flowered Sedge / Carex à fleurs lâches (Grass / Sedge / Rush; Rare in Region)
Carex lenticularis — Lenticular Sedge / Carex lenticulaire (Grass / Sedge / Rush; Rare in Region)
Carex leptalea — Bristle-stalked Sedge / Carex ténu (Grass / Sedge / Rush)
Carex leptonervia — Nerveless Woodland Sedge / Carex à nervures ténues (Grass / Sedge / Rush; Rare in Region)
Carex limosa — Mud Sedge / Carex des boues (Grass / Sedge / Rush; Rare in Region)
Carex livida — Lead Sedge / Carex livide (Grass / Sedge / Rush, blooms May, Jun; Rare in Region)
Carex lucorum — Blue Ridge Sedge / Carex des sous-bois (Grass / Sedge / Rush; Rare in Region)
Carex lupulina — Hop Sedge / Carex houblon (Grass / Sedge / Rush)
Carex lurida — Sallow Sedge / Carex livide (Grass / Sedge / Rush)
Carex magellanica — Tall Bog-Sedge / Carex de Magellan (Grass / Sedge / Rush)
Carex merritt-fernaldii — Merritt Fernald's Sedge / Carex de Fernald (Grass / Sedge / Rush; Rare in Region)
Carex michauxiana — Michaux's Sedge / Carex de Michaux (Grass / Sedge / Rush, blooms Jun)
Carex molesta — Troublesome Sedge / Carex gênant (Grass / Sedge / Rush, blooms May, Jun; Rare in Region)
Carex muhlenbergii — Muhlenberg's Sedge / Carex de Muhlenberg (Grass / Sedge / Rush, blooms May, Jun)
Carex novae-angliae — New England Sedge / Carex de la Nouvelle-Angleterre (Grass / Sedge / Rush)
Carex oederi — Little Green Sedge / Carex d'Oeder (Grass / Sedge / Rush)
Carex oligosperma — Few-seeded Sedge / Carex oligosperme (Grass / Sedge / Rush; Rare in Region)
Carex ormostachya — Necklace Spike Sedge / Carex à épis en collier (Grass / Sedge / Rush; Rare in Region)
Carex pallescens — Pale Sedge / Carex pâlissant (Grass / Sedge / Rush; Rare in Region)
Carex pauciflora — Few-flowered Sedge / Carex pauciflore (Grass / Sedge / Rush, blooms May, Jun; Rare in Region)
Carex peckii — Peck's Sedge / Carex de Peck (Grass / Sedge / Rush)
Carex pedunculata — Long-stalked Sedge / Carex pédonculé (Grass / Sedge / Rush)
Carex pellita — Woolly Sedge / Carex laineux (Grass / Sedge / Rush)
Carex pensylvanica — Pennsylvania Sedge / Carex de Pennsylvanie (Grass / Sedge / Rush)
Carex plantaginea — Plantainleaf Sedge / Carex plantaginé (Grass / Sedge / Rush; Rare in Region)
Carex platyphylla — Broad-leaved Sedge / Carex à larges feuilles (Grass / Sedge / Rush; Rare in Region)
Carex prairea — Prairie Sedge / Carex des prairies (Grass / Sedge / Rush, blooms May, Jun; Rare in Region)
Carex prasina — Drooping Sedge / Carex vert-pré (Grass / Sedge / Rush; Rare in Region)
Carex projecta — Necklace Sedge / Carex projeté (Grass / Sedge / Rush)
Carex pseudocyperus — Cyperus Sedge / Carex faux-souchet (Grass / Sedge / Rush)
Carex radiata — Bracted Sedge / Carex étoilé (Grass / Sedge / Rush)
Carex retrorsa — Retrorse Sedge / Carex rétrose (Grass / Sedge / Rush; Rare in Region)
Carex richardsonii — Richardson's Sedge / Carex de Richardson (Grass / Sedge / Rush; Rare in Region)
Carex rosea — Rosy Sedge / Carex rose (Grass / Sedge / Rush)
Carex sartwellii — Sartwell's Sedge / Carex de Sartwell (Grass / Sedge / Rush; Rare in Region)
Carex scabrata — Eastern Rough Sedge / Carex scabre (Grass / Sedge / Rush; Rare in Region)
Carex scoparia — Pointed Broom Sedge / Carex balai (Grass / Sedge / Rush; Rare in Region)
Carex siccata — Dry Land Sedge / Carex desséché (Grass / Sedge / Rush; Rare in Region)
Carex sparganioides — Bur Reed Sedge / Carex sparganioïde (Grass / Sedge / Rush)
Carex sprengelii — Longbeak Sedge / Carex de Sprengel (Grass / Sedge / Rush; Rare in Region)
Carex sterilis — Sterile Sedge / Carex stérile (Grass / Sedge / Rush, blooms May, Jun; Rare in Region)
Carex stipata — Awl-fruited Sedge / Carex stipité (Grass / Sedge / Rush)
Carex stricta — Tussock Sedge / Carex raide (Grass / Sedge / Rush)
Carex sychnocephala — Many-headed Sedge / Carex à nombreuses têtes (Grass / Sedge / Rush; Rare in Region)
Carex tenera — Slender Sedge / Carex tendre (Grass / Sedge / Rush, blooms May, Jun; Rare in Region)
Carex tenuiflora — Sparse-flowered Sedge / Carex ténuiflore (Grass / Sedge / Rush, blooms May, Jun; Rare in Region)
Carex tetanica — Rigid Sedge / Carex tétanique (Grass / Sedge / Rush, blooms May)
Carex tonsa — Shaved Sedge / Carex rasé (Grass / Sedge / Rush)
Carex torta — Twisted Sedge / Carex tortueux (Grass / Sedge / Rush)
Carex tribuloides — Blunt Broom Sedge / Carex triloïde (Grass / Sedge / Rush; Rare in Region)
Carex trisperma — Threeseeded Sedge / Carex à trois graines (Grass / Sedge / Rush; Rare in Region)
Carex tuckermanii — Tuckerman's Sedge / Carex de Tuckerman (Grass / Sedge / Rush)
Carex typhina — Cattail Sedge / Carex faux-massette (Grass / Sedge / Rush; Rare in Region)
Carex umbellata — Parasol Sedge / Carex ombellé (Grass / Sedge / Rush; Rare in Region)
Carex utriculata — Northwest Territory Sedge / Carex utriculé (Grass / Sedge / Rush; Rare in Region)
Carex vaginata — Tausch Ensheathed Sedge / Carex vaginé (Grass / Sedge / Rush, blooms May, Jun; Rare in Region)
Carex vesicaria — Inflated Sedge / Carex vésiculeux (Grass / Sedge / Rush)
Carex viridula — Greenish Sedge / Carex verdâtre (Grass / Sedge / Rush, blooms May, Jun)
Carex vulpinoidea — Fox Sedge / Carex vulgaire (Grass / Sedge / Rush)
Carex wiegandii — Wiegand's Sedge / Carex de Wiegand (Grass / Sedge / Rush, blooms May, Jun; Rare in Region)
Carex woodii — Wood's Sedge / Carex de Wood (Grass / Sedge / Rush, blooms May, Jun; Rare in Region)
Carex x subviridula — Green-tinged Sedge (Grass / Sedge / Rush, blooms May, Jun)
Carex ×knieskernii — Knieskern's Sedge (Grass / Sedge / Rush, blooms May, Jun)
Cladium mariscoides — Smooth Saw-Grass / Marisque ressemblant (Grass / Sedge / Rush; Rare in Region)
Cyperus bipartitus — Shining Flatsedge / Souchet biparti (Grass / Sedge / Rush)
Cyperus dentatus — Toothed Flatsedge / Souchet denté (Grass / Sedge / Rush; Rare in Region)
Cyperus diandrus — Umbrella Flatsedge / Souchet à deux étamines (Grass / Sedge / Rush; Rare in Region)
Cyperus engelmannii — Engelmann's Flatsedge / Souchet d'Engelmann (Grass / Sedge / Rush)
Cyperus esculentus — Yellow Nutsedge / Souchet comestible (Grass / Sedge / Rush)
Cyperus houghtonii — Houghton's Umbrella-Sedge / Souchet de Houghton (Grass / Sedge / Rush; Rare in Region)
Cyperus lupulinus — Great Plains Flatsedge / Souchet houbloné (Grass / Sedge / Rush; Rare in Region)
Cyperus odoratus — Umbrella-sedge / Souchet odorant (Grass / Sedge / Rush, blooms Aug, Sep; Rare in Region)
Cyperus schweinitzii — Schweinitz's Flatsedge / Souchet de Schweinitz (Grass / Sedge / Rush; Rare in Region)
Cyperus squarrosus — Bearded Flatsedge / Souchet squarreux (Grass / Sedge / Rush)
Cyperus strigosus — Straw-colored Flatsedge / Souchet strigeux (Grass / Sedge / Rush)
Dulichium arundinaceum — Three-way Sedge / Dulichium roseau (Grass / Sedge / Rush)
Eleocharis acicularis — Needle Spikerush / Éléocharide aciculaire (Grass / Sedge / Rush)
Eleocharis compressa — Flattened Spikerush / Éléocharide comprimée (Grass / Sedge / Rush, blooms Jun, Jul)
Eleocharis diandra — Wright's Spikerush / Éléocharide à deux étamines (Grass / Sedge / Rush; Rare in Region)
Eleocharis elliptica — Kunth Rounded Spike-rush / Éléocharide elliptique (Grass / Sedge / Rush, blooms Jun, Jul)
Eleocharis erythropoda — Steudel Red-stemmed Spike-rush / Éléocharide érythropode (Grass / Sedge / Rush, blooms Jun, Jul)
Eleocharis flavescens — Yellowish Spike-rush / Éléocharide jaunâtre (Grass / Sedge / Rush, blooms Jun, Jul)
Eleocharis geniculata — Capitate Spike-rush / Éléocharide géniculée (Grass / Sedge / Rush, blooms Jul, Aug; Rare in Region)
Eleocharis intermedia — Schultes Intermediate Spike-rush / Éléocharide intermédiaire (Grass / Sedge / Rush, blooms Jun, Jul; Rare in Region)
Eleocharis nitida — Neat Spike-rush / Éléocharide nette (Grass / Sedge / Rush, blooms Jun, Jul; Rare in Region)
Eleocharis obtusa — Blunt Spikerush / Éléocharide obtuse (Grass / Sedge / Rush)
Eleocharis ovata — Ovate Spikerush / Éléocharide ovale (Grass / Sedge / Rush)
Eleocharis palustris — Common Spikerush / Éléocharide des marais (Grass / Sedge / Rush)
Eleocharis quinqueflora — Few-flowered Spike-rush / Éléocharide pauciflore (Grass / Sedge / Rush, blooms May, Jun)
Eleocharis robbinsii — Robbins' Spike-rush / Éléocharide de Robbins (Grass / Sedge / Rush, blooms Jun, Jul)
Eriophorum chamissonis — Meyer Chamisso's Cotton-grass / Linaigrette de Chamisso (Grass / Sedge / Rush, blooms May, Jun; Rare in Region)
Eriophorum gracile — Slender Cottongrass / Linaigrette gracile (Grass / Sedge / Rush; Rare in Region)
Eriophorum tenellum — Rough Cottongrass / Linaigrette ténue (Grass / Sedge / Rush; Rare in Region)
Eriophorum vaginatum — Tussock Cottongrass / Linaigrette gainée (Grass / Sedge / Rush; Rare in Region)
Eriophorum virginicum — Tawny Cottongrass / Linaigrette de Virginie (Grass / Sedge / Rush; Rare in Region)
Eriophorum viridicarinatum — Green-keeled Cottongrass / Linaigrette à carène verte (Grass / Sedge / Rush; Rare in Region)
Eriophorum ×porsildii — Raymond Porsild's Cotton-grass / Linaigrette de Porsild (Grass / Sedge / Rush, blooms May, Jun; Rare in Region)
Fimbristylis autumnalis — Slender Fimbry / Fimbristyle automnale (Grass / Sedge / Rush; Rare in Region)
Rhynchospora alba — White Beak-Sedge / Rhynchospore blanc (Grass / Sedge / Rush)
Rhynchospora capitellata — Brownish Beaked-Rush / Rhynchospore capitellée (Grass / Sedge / Rush; Rare in Region)
Rhynchospora fusca — Brown Beaked-rush / Rhynchospore brun (Grass / Sedge / Rush, blooms Jun, Jul)
Schoenoplectiella purshiana — Weak-stalked Bulrush / Scirpe de Pursh (Grass / Sedge / Rush; Rare in Region)
Schoenoplectus acutus — Hardstem Bulrush / Scirpe aigu (Grass / Sedge / Rush; Rare in Region)
Schoenoplectus heterochaetus — Sojak Slender Bulrush / Scirpe hétérochaète (Grass / Sedge / Rush, blooms Jul, Aug; Rare in Region)
Schoenoplectus pungens — Three-square Bulrush / Scirpe piquant (Grass / Sedge / Rush)
Schoenoplectus subterminalis — Swimming Club-rush / Scirpe subterminale (Aquatic, blooms Jun, Jul)
Schoenoplectus tabernaemontani — Soft-stemmed Bulrush / Scirpe de Tabernaemontanus (Grass / Sedge / Rush)
Schoenoplectus torreyi — Torrey's Bulrush / Scirpe de Torrey (Grass / Sedge / Rush)
Scirpus atrocinctus — Black-girdle Bulrush / Scirpe à gaine noire (Grass / Sedge / Rush)
Scirpus atrovirens — Dark Green Bulrush / Scirpe vert foncé (Grass / Sedge / Rush)
Scirpus cyperinus — Woolgrass / Scirpe cypérin (Grass / Sedge / Rush)
Scirpus hattorianus — Mosquito Bulrush / Scirpe de Hattori (Grass / Sedge / Rush)
Scirpus microcarpus — Panicled Bulrush / Scirpe à petits fruits (Grass / Sedge / Rush)
Scirpus pedicellatus — Stalked Bulrush / Scirpe pédicellé (Grass / Sedge / Rush; Rare in Region)
Scirpus pendulus — Nodding Bulrush / Scirpe pendant (Grass / Sedge / Rush)
Trichophorum alpinum — Cotton Deergrass / Trichophore des Alpes (Grass / Sedge / Rush; Rare in Region)

Cystopteridaceae

Cystopteris bulbifera — Bulblet Fern / Cystoptère bulbifère (Fern)
Cystopteris fragilis — Brittle Bladderfern / Cystoptère fragile (Fern)
Cystopteris tenuis — Mackay's Fragile Fern / Cystoptère ténu (Fern)

Dennstaedtiaceae

Dennstaedtia punctilobula — Hay-scented Fern / Dennstaedtie à lobules ponctués (Fern)
Pteridium aquilinum — Common Bracken / Fougère-aigle (Fern)

Droseraceae

Drosera intermedia — Spoonleaf Sundew / Droséra intermédiaire (Herbaceous, blooms Jul, Aug; Rare in Region)
Drosera rotundifolia — Round-leaved Sundew / Droséra à feuilles rondes (Herbaceous, blooms Jun, Jul)

Dryopteridaceae

Dryopteris carthusiana — Spinulose Wood Fern / Dryoptère spinuleuse (Fern)
Dryopteris clintoniana — Clinton's Wood Fern / Dryoptère de Clinton (Fern)
Dryopteris cristata — Crested Wood Fern / Dryoptère à crêtes (Fern)
Dryopteris goldieana — Goldie's Wood Fern / Dryoptère de Goldie (Fern)
Dryopteris intermedia — Intermediate Wood Fern / Dryoptère intermédiaire (Fern)
Dryopteris marginalis — Marginal Wood Fern / Dryoptère marginale (Fern; Rare in Region)
Dryopteris ×benedictii — Wherry Benedict's Woodfern / Dryoptéride de Benedict (Fern)
Dryopteris ×boottii — Boott's Woodfern / Dryoptéride de Boott (Fern)
Dryopteris ×dowellii — Wherry Dowell's Woodfern / Dryoptéride de Dowell (Fern)
Dryopteris ×mickelii — Woodfern / Dryoptéride de Mickel (Fern; Rare in Region)
Dryopteris ×triploidea — Triploid Wood Fern / Dryoptéride triploïde (Fern)
Dryopteris ×uliginosum — Woodfern / Dryoptéride des tourbières (Fern)
Polystichum acrostichoides — Christmas Fern / Polystic faux-acrostiche (Fern; Rare in Region)
Polystichum braunii — Braun's Holly-fern / Polystic de Braun (Fern)

Elaeagnaceae

Elaeagnus commutata — Silverberry / Chalef changeant (Shrub, blooms May, Jun; Rare in Region)
Shepherdia argentea — Silver Buffaloberry / Shepherdie argentée (Shrub, blooms Apr, May; Naturalized in Region)
Shepherdia canadensis — Canadian Buffalo-Berry / Shepherdie du Canada (Shrub, blooms Apr, May)

Elatinaceae

Elatine americana — American Waterwort / Élatine d'Amérique (Aquatic, blooms Jul, Aug; Rare in Region)

Equisetaceae

Equisetum arvense — Field Horsetail / Prêle des champs (Herbaceous)
Equisetum fluviatile — Water Horsetail / Prêle fluviatile (Herbaceous)
Equisetum hyemale — Rough Horsetail / Prêle d'hiver (Herbaceous)
Equisetum palustre — Marsh Horsetail / Prêle des marais (Herbaceous; Rare in Region)
Equisetum pratense — Meadow Horsetail / Prêle des prés (Herbaceous)
Equisetum scirpoides — Dwarf Horsetail / Prêle scirpoïde (Herbaceous)
Equisetum sylvaticum — Wood Horsetail / Prêle des bois (Herbaceous)
Equisetum variegatum — Variegated Horsetail / Prêle panachée (Herbaceous)
Equisetum ×litorale — Shoreline Horsetail / Prêle des rivages (Herbaceous)
Equisetum ×mackaii — Horsetail / Prêle de Mackay (Herbaceous)

Ericaceae

Andromeda polifolia — Wild Rosemary / Andromède poliifolia (Shrub, blooms May, Jun)
Arctostaphylos uva-ursi — Bearberry / Raisin d'ours (Shrub, blooms May, Jun)
Chamaedaphne calyculata — Leatherleaf / Cassandre caliculée (Shrub, blooms May)
Chimaphila umbellata — Pipsissewa / Chimaphile à ombelles (Shrub, blooms Jun, Jul)
Epigaea repens — Trailing Arbutus / Épigée rampante (Shrub, blooms Apr, May)
Gaultheria hispidula — Creeping Snowberry / Gaulthérie hispidule (Shrub, blooms May, Jun)
Gaultheria procumbens — Eastern Teaberry / Gaulthérie couchée (Shrub, blooms Jul, Aug)
Gaylussacia baccata — Black Huckleberry / Gaylussacie à baies (Shrub, blooms May, Jun)
Kalmia angustifolia — Sheep Laurel / Kalmia à feuilles étroites (Shrub, blooms Jun, Jul)
Kalmia polifolia — Swamp Laurel / Kalmia à feuilles de polium (Shrub, blooms May, Jun)
Moneses uniflora — One-flowered Wintergreen / Monèse uniflore (Herbaceous, blooms Jun, Jul; Rare in Region)
Monotropa hypopitys — Pinesap / Monotrope sucepin (Herbaceous, blooms Jun, Jul, Aug)
Monotropa uniflora — Ghost Pipe / Monotrope uniflore (Herbaceous, blooms Jun, Jul, Aug)
Orthilia secunda — One-sided Wintergreen / Pyrole unilatérale (Herbaceous, blooms Jun, Jul)
Pterospora andromedea — Woodland Pinedrops / Ptérospore à fleurs d'andromède (Herbaceous, blooms Jun, Jul; Rare in Region)
Pyrola americana — American Wintergreen / Pyrole d'Amérique (Herbaceous, blooms Jun, Jul; Rare in Region)
Pyrola asarifolia — Bog Wintergreen / Pyrole à feuilles d'asaret (Herbaceous, blooms Jun, Jul)
Pyrola chlorantha — Green-flowered Wintergreen / Pyrole à fleurs vertes (Herbaceous, blooms Jun, Jul)
Pyrola elliptica — Shinleaf / Pyrole elliptique (Herbaceous, blooms Jun, Jul; Rare in Region)
Pyrola minor — Small Shinleaf / Pyrole mineure (Shrub, blooms Jun, Jul; Rare in Region)
Rhododendron Maximum — Great Laurel / rhododendron géant (Shrub, blooms May, Jun; Naturalized in Region)
Rhododendron canadense — Rhodora / Rhododendron du Canada (Shrub, blooms Apr, May; Rare in Region)
Rhododendron groenlandicum — Bog Labrador Tea / Thé du Labrador (Shrub, blooms May, Jun)
Vaccinium angustifolium — Lowbush Blueberry / Bleuet à feuilles étroites (Shrub, blooms May, Jun)
Vaccinium corymbosum — Northern Highbush Blueberry / Bleuet en corymbe (Shrub, blooms May, Jun; Rare in Region)
Vaccinium macrocarpon — American Cranberry / Canneberge à gros fruits (Shrub, blooms Jun, Jul)
Vaccinium myrtilloides — Velvetleaf Blueberry / Bleuet fausse-myrtille (Shrub, blooms May, Jun)
Vaccinium oxycoccos — Bog Cranberry / Canneberge commune (Shrub, blooms Jun, Jul)
Vaccinium pallidum — Early Lowbush Blueberry / Bleuet pâle (Shrub, blooms May; Rare in Region)
Vaccinium stamineum — Deerberry / Airelle stamineuse (Shrub, blooms May, Jun; Outside of Ottawa Valley)

Eriocaulaceae

Eriocaulon aquaticum — Common Pipewort / Ériocaulon aquatique (Aquatic, blooms Jun, Jul, Aug)

Euphorbiaceae

Acalypha rhomboidea — Common Three-seeded Mercury / Acalyphe rhomboïde (Herbaceous)
Euphorbia commutata — Wood Spurge / Euphorbe changée (Herbaceous; Rare in Region)
Euphorbia glyptosperma — Small Ridge-seeded Spurge / Euphorbe à graines striées (Herbaceous, blooms Jul, Aug; Naturalized in Region)
Euphorbia maculata — Spotted Spurge / Euphorbe maculée (Herbaceous; Naturalized in Region)
Euphorbia vermiculata — Wormseed Sandmat / Euphorbe vermiculée (Herbaceous)

Fabaceae

Amorpha fruticosa — False Indigo Bush / Amorpha arbustive (Shrub, blooms Jun, Jul; Naturalized in Region)
Amphicarpaea bracteata — American Hog-Peanut / Amphicarpée bractéolée (Vine, blooms Aug, Sep)
Apios americana — American Groundnut / Apios d'Amérique (Vine, blooms Jul, Aug)
Astragalus canadensis — Canadian Milkvetch / Astragale du Canada (Herbaceous, blooms Jun, Jul)
Astragalus neglectus — Cooper's Milkvetch / Astragale négligé (Herbaceous, blooms Jun, Jul; Rare in Region)
Desmodium canadense — Showy Tick-Trefoil / Desmodie du Canada (Herbaceous, blooms Jul, Aug)
Desmodium paniculatum — Panicled Ticktrefoil / Desmodie paniculée (Herbaceous, blooms Jul, Aug; Rare in Region)
Gleditsia triacanthos — Honey Locust / Févier à trois épines (Tree; Naturalized in Region)
Hylodesmum glutinosum — Pointed-leaved Tick-Trefoil / Desmodie glutineuse (Herbaceous, blooms Jul, Aug)
Lathyrus japonicus — Seaside Pea / Gesse du Japon (Herbaceous, blooms Jun, Jul)
Lathyrus ochroleucus — Pale Vetchling / Gesse ochroleuce (Herbaceous, blooms Jun, Jul; Rare in Region)
Lathyrus palustris — Marsh Pea / Gesse des marais (Herbaceous, blooms Jun, Jul)
Lespedeza capitata — Bush-clover / Lespédèze capitée (Herbaceous, blooms Jul, Aug; Rare in Region)
Vicia americana — American Vetch / Vesce d'Amérique (Herbaceous, blooms May, Jun, Jul; Rare in Region)

Fagaceae

Castanea dentata — American Chestnut / Châtaignier d'Amérique (Tree; Naturalized in Region)
Fagus grandifolia — American Beech / Hêtre à grandes feuilles (Tree)
Quercus alba — White Oak / Chêne blanc (Tree)
Quercus bicolor — Swamp White Oak / Chêne bicolore (Tree; Rare in Region)
Quercus imbricaria — Shingle Oak / Chêne à feuilles de laurier (Tree; Naturalized in Region)
Quercus macrocarpa — Bur Oak / Chêne à gros fruits (Tree)
Quercus palustris — Pin Oak / Chêne des marais (Tree; Naturalized in Region)
Quercus rubra — Northern Red Oak / Chêne rouge (Tree)
Quercus velutina — Black Oak / Chêne noir (Tree; Naturalized in Region)
Quercus × schuettei — Schuette's Oak / Chêne de Schuette (Tree)

Gentianaceae

Gentiana andrewsii — Closed Bottle Gentian / Gentiane d'Andrews (Herbaceous, blooms Sep, Oct)
Gentianopsis crinita — Greater Fringed Gentian / Gentiane frangée (Herbaceous, blooms Aug, Sep; Rare in Region)
Gentianopsis virgata — Slender Fringed Gentian / Gentianopsis à tiges grêles (Herbaceous, blooms Aug, Sep, Oct; Outside of Ottawa Valley)
Halenia deflexa — Spurred Gentian / Halenie défléchie (Herbaceous, blooms Jun, Jul; Rare in Region)

Geraniaceae

Geranium bicknellii — Northern Cranesbill / Géranium de Bicknell (Herbaceous, blooms Jun, Jul)
Geranium carolinianum — Carolina Crane's-Bill / Géranium de Caroline (Herbaceous, blooms May, Jun, Jul; Rare in Region)
Geranium maculatum — Wild Geranium / Géranium maculé (Herbaceous, blooms May, Jun; Rare in Region)
Geranium robertianum — Herb Robert / Géranium de Robert (Herbaceous, blooms May, Jun, Jul, Aug)

Grossulariaceae

Ribes americanum — American Black Currant / Groseillier d'Amérique (Shrub, blooms May)
Ribes aureum — Golden Currant / Groseillier doré (Shrub, blooms Apr, May; Naturalized in Region)
Ribes cynosbati — Prickly Gooseberry / Groseillier à maquereau d'Amérique (Shrub, blooms May)
Ribes glandulosum — Skunk Currant / Groseillier glanduleux (Shrub, blooms May)
Ribes hirtellum — Smooth Gooseberry / Groseillier hirtelle (Shrub, blooms May; Rare in Region)
Ribes lacustre — Swamp Currant / Groseillier lacustre (Shrub, blooms May, Jun)
Ribes oxyacanthoides — Northern Gooseberry / Groseillier nordique (Shrub, blooms May, Jun; Unconfirmed/Old Record)
Ribes triste — Northern Redcurrant / Groseillier amer (Shrub, blooms May)

Haloragaceae

Myriophyllum alterniflorum — Alternate Water-milfoil / Myriophylle à fleurs alternes (Aquatic, blooms Jun, Jul)
Myriophyllum farwellii — Farwell's Water-milfoil / Myriophylle de Farwell (Aquatic, blooms Jun, Jul)
Myriophyllum heterophyllum — Broadleaf Water-Milfoil / Myriophylle hétérophylle (Aquatic; Rare in Region)
Myriophyllum sibiricum — Siberian Water-Milfoil / Myriophylle de Sibérie (Aquatic)
Myriophyllum tenellum — Slender Water-Milfoil / Myriophylle ténu (Aquatic)
Myriophyllum verticillatum — Whorled Water-Milfoil / Myriophylle verticillé (Aquatic; Rare in Region)
Proserpinaca palustris — Marsh Mermaidweed / Proserpinie des marais (Aquatic; Rare in Region)

Hamamelidaceae

Hamamelis virginiana — American Witch-Hazel / Hamamélis de Virginie (Shrub, blooms Sep, Oct; Rare in Region)

Hydrocharitaceae

Elodea canadensis — Canadian Waterweed / Élodée du Canada (Aquatic; Rare in Region)
Elodea nuttallii — Nuttall's Waterweed / Élodée de Nuttall (Aquatic; Rare in Region)
Najas flexilis — Slender Water-Nymph / Naïade flexible (Aquatic)
Najas guadalupensis — Southern Waternymph / Naïade de Guadalupe (Aquatic; Rare in Region)
Vallisneria americana — American Eelgrass / Vallisnérie d'Amérique (Aquatic)

Hypericaceae

Hypericum ascyron — Great St. John's-wort / Millepertuis ascyron (Herbaceous, blooms Jul; Rare in Region)
Hypericum boreale — Northern St. John's-Wort / Millepertuis boréal (Herbaceous, blooms Jul, Aug; Rare in Region)
Hypericum canadense — Canada St. John's Wort / Millepertuis du Canada (Herbaceous, blooms Jul, Aug)
Hypericum ellipticum — Pale St. John's-Wort / Millepertuis elliptique (Herbaceous, blooms Jul, Aug; Rare in Region)
Hypericum fraseri — Fraser's Marsh St. John's-Wort / Millepertuis de Fraser (Herbaceous, blooms Jul, Aug)
Hypericum kalmianum — Kalm's St. John's-Wort / Millepertuis de Kalm (Shrub, blooms Jul, Aug; Rare in Region)
Hypericum majus — Large Canadian St. John's-Wort / Grand millepertuis (Herbaceous, blooms Jul, Aug; Rare in Region)
Hypericum mutilum — Dwarf St. John's Wort / Millepertuis mutilé (Herbaceous, blooms Jul, Aug, Sep; Rare in Region)
Hypericum punctatum — Spotted St. John's Wort / Millepertuis ponctué (Herbaceous, blooms Jun, Jul, Aug)
Hypericum virginicum — Virginia Marsh St. John's-Wort / Millepertuis de Virginie (Herbaceous, blooms Jul, Aug)

Iridaceae

Iris versicolor — Northern Blue Flag / Iris versicolore (Herbaceous, blooms Jun, Jul)
Iris virginica — Southern Blue Flag / Iris de Virginie (Herbaceous, blooms Jun, Jul; Rare in Region)
Sisyrinchium angustifolium — Narrow-leaved Blue-eyed Grass / Bermudienne à feuilles étroites (Herbaceous, blooms May, Jun, Jul; Rare in Region)
Sisyrinchium montanum — Strict Blue-eyed Grass / Bermudienne montagnarde (Herbaceous, blooms May, Jun)

Isoetaceae

Isoetes echinospora — Spiny-spored Quillwort / Isoète à spores épineuses (Aquatic)
Isoetes macrospora — Large-spored Quillwort / Isoète à grandes spores (Aquatic; Rare in Region)
Isoetes riparia — River Quillwort / Isoète des rivages (Aquatic; Rare in Region)
Isoetes ×dodgei — Dodge's Quillwort / Isoète de Dodge (Aquatic; Rare in Region)
Isoetes ×hickeyii — Luebke Hickey's Quillwort / Isoète de Hickey (Aquatic; Rare in Region)
Isoetes ×jeffreyi — Jeffrey's Quillwort (Herbaceous)

Juglandaceae

Carya cordiformis — Bitternut Hickory / Caryer cordiforme (Tree)
Carya ovata — Shagbark Hickory / Caryer ovale (Tree; Rare in Region)
Juglans cinerea — Butternut / Noyer cendré (Tree)
Juglans nigra — Eastern Black Walnut / Noyer noir (Tree; Naturalized in Region)

Juncaceae

Juncus alpinoarticulatus — Northern Green Rush / Jonc alpin articulé (Grass / Sedge / Rush; Rare in Region)
Juncus articulatus — Jointed Rush / Jonc articulé (Grass / Sedge / Rush)
Juncus brevicaudatus — Rush / Jonc à courte queue (Grass / Sedge / Rush, blooms Jun, Jul)
Juncus bufonius — Toad Rush / Jonc des crapauds (Grass / Sedge / Rush)
Juncus canadensis — Canada Rush / Jonc du Canada (Grass / Sedge / Rush; Rare in Region)
Juncus dudleyi — Dudley's Rush / Jonc de Dudley (Grass / Sedge / Rush)
Juncus effusus — Soft Rush / Jonc épars (Grass / Sedge / Rush)
Juncus filiformis — Thread Rush / Jonc filiforme (Grass / Sedge / Rush)
Juncus greenei — Green's Rush / Jonc de Greene (Grass / Sedge / Rush, blooms Jun, Jul; Rare in Region)
Juncus nodosus — Knotted Rush / Jonc noueux (Grass / Sedge / Rush)
Juncus pelocarpus — Brown-fruit Rush / Jonc à fruits limoneux (Grass / Sedge / Rush)
Juncus subtilis — Meyer Creeping Rush / Jonc subtil (Grass / Sedge / Rush, blooms Jun, Jul; Rare in Region)
Juncus tenuis — Slender Path Rush / Jonc ténu (Grass / Sedge / Rush)
Juncus torreyi — Torrey's Rush / Jonc de Torrey (Grass / Sedge / Rush; Rare in Region)
Juncus tweedyi — Narrow-panicle Rush / Jonc de Tweedy (Grass / Sedge / Rush)
Juncus vaseyi — Vasey’s Rush / Jonc de Vasey (Grass / Sedge / Rush, blooms Jun, Jul; Rare in Region)
Juncus x nodosiformis — Knotted Rush / Jonc nodiforme (Grass / Sedge / Rush, blooms Jun, Jul)
Luzula acuminata — Hairy Woodrush / Luzule acuminée (Grass / Sedge / Rush)
Luzula multiflora — Heath Wood-Rush / Luzule multiflore (Grass / Sedge / Rush)

Juncaginaceae

Triglochin maritima — Common Arrowgrass / Troscart maritime (Herbaceous; Rare in Region)
Triglochin palustre — Arrow-grass / Troscart des marais (Herbaceous, blooms Jun, Jul; Rare in Region)

Lamiaceae

Clinopodium vulgare — Wild Basil / Clinopode vulgaire (Herbaceous, blooms Jul, Aug)
Dracocephalum parviflorum — American Dragonhead / Dracocéphale à petites fleurs (Herbaceous, blooms Jun, Jul; Rare in Region)
Hedeoma hispida — Rough False Pennyroyal / Hédeome hispide (Herbaceous, blooms May, Jun; Rare in Region)
Hedeoma pulegioides — American Pennyroyal / Hédéome faux-pouliot (Herbaceous, blooms Jul, Aug; Rare in Region)
Lycopus americanus — American Bugleweed / Lycope d'Amérique (Herbaceous, blooms Jul, Aug)
Lycopus asper — Rough Bugleweed / Lycope rude (Herbaceous, blooms Jul, Aug; Rare in Region)
Lycopus uniflorus — Northern Bugleweed / Lycope uniflore (Herbaceous, blooms Jul, Aug)
Lycopus virginicus — Sweet Bugleweed / Lycope de Virginie (Herbaceous, blooms Jul, Aug)
Mentha canadensis — Canada Mint / Menthe du Canada (Herbaceous, blooms Jul, Aug, Sep)
Monarda didyma — Scarlet Beebalm / Monarde écarlate (Herbaceous, blooms Jul, Aug; Naturalized in Region)
Monarda fistulosa — Wild Bergamot / Monarde fistuleuse (Herbaceous, blooms Jul, Aug; Rare in Region)
Monarda punctata — Spotted Horsemint / Monarde ponctuée (Herbaceous, blooms Jul, Aug; Rare in Region)
Physostegia virginiana — Obedient Plant / Physostégie de Virginie (Herbaceous, blooms Jul, Aug, Sep; Rare in Region)
Prunella vulgaris subsp. lanceolata — Lanceleaf Selfheal / Brunelle vulgaire (Herbaceous, blooms Jun, Jul, Aug, Sep)
Pycnanthemum tenuifolium — Narrowleaf Mountainmint / Pycnanthème à feuilles ténues (Herbaceous, blooms Jul, Aug; Rare in Region)
Pycnanthemum virginianum — Virginia Mountain Mint / Pycnanthème de Virginie (Herbaceous, blooms Jul, Aug; Rare in Region)
Scutellaria galericulata — Marsh Skullcap / Scutellaire à casque (Herbaceous, blooms Jun, Jul, Aug)
Scutellaria lateriflora — Side-flowering Skullcap / Scutellaire latériflore (Herbaceous, blooms Jul, Aug)
Scutellaria parvula — Small Skullcap / Scutellaire parvule (Herbaceous, blooms May, Jun; Rare in Region)
Stachys hispida — Marsh Hedge Nettle / Épiaire hispide (Herbaceous, blooms Jun, Jul, Aug; Rare in Region)
Stachys pilosa — Hedge-nettle / Épiaire poilue (Herbaceous, blooms Jul, Aug; Rare in Region)
Teucrium canadense — American Germander / Germandrée du Canada (Herbaceous, blooms Jul, Aug; Rare in Region)
Trichostema coeruleum — Pennyroyal Bluecurls / Dicran bleuâtre (Herbaceous, blooms Aug, Sep; Rare in Region)
Trichostema dichotomum — Forked Blue-curls / Trichostème dichotome (Herbaceous, blooms Aug, Sep; Outside of Ottawa Valley)

Lentibulariaceae

Utricularia cornuta — Horned Bladderwort / Utriculaire cornue (Aquatic, blooms Jun, Jul; Rare in Region)
Utricularia geminiscapa — Twinned Bladderwort / Utriculaire à deux hampes (Aquatic, blooms Jul, Aug)
Utricularia gibba — Humped Bladderwort / Utriculaire gibbeuse (Aquatic, blooms Jun, Jul, Aug)
Utricularia intermedia — Intermediate Bladderwort / Utriculaire intermédiaire (Aquatic, blooms Jun, Jul, Aug; Rare in Region)
Utricularia macrorhiza — Common Bladderwort / Utriculaire vulgaire (Aquatic, blooms Jun, Jul, Aug)
Utricularia minor — Lesser Bladderwort / Utriculaire mineure (Aquatic, blooms Jun, Jul; Rare in Region)
Utricularia resupinata — Northeastern Bladderwort / Utriculaire résupinée (Aquatic, blooms Jun, Jul)

Liliaceae

Anticlea elegans — White Death Camas / Anticléa élégant (Herbaceous, blooms Jun, Jul; Rare in Region)
Clintonia borealis — Bluebead Lily / Clintonie boréale (Herbaceous, blooms May, Jun)
Erythronium americanum — Yellow Trout Lily / Érythrone d'Amérique (Herbaceous, blooms Apr, May)
Lilium canadense — Canada Lily / Lis du Canada (Herbaceous, blooms Jun, Jul; Rare in Region)
Lilium philadelphicum — Wood Lily / Lis de Philadelphie (Herbaceous, blooms Jun, Jul)
Medeola virginiana — Cucumber Root / Médeole de Virginie (Herbaceous, blooms May, Jun)
Streptopus amplexifolius — White Twisted-stalk / Streptope à feuilles embrassantes (Herbaceous, blooms May, Jun; Rare in Region)
Streptopus lanceolatus — Rose Twisted-Stalk / Streptope à feuilles lancéolées (Herbaceous, blooms May, Jun)

Limnanthaceae

Floerkea proserpinacoides — False Mermaidweed / Floerkée fausse-proserpinie (Herbaceous, blooms Apr, May; Rare in Region)

Linaceae

Linum striatum — Ridged Yellow Flax / Lin strié (Herbaceous, blooms Jul, Aug; Outside of Ottawa Valley)

Linderniaceae

Lindernia dubia — Yellowseed False Pimpernel / Lindernielle douteuse (Herbaceous, blooms Jul, Aug, Sep)

Lycopodiaceae

Dendrolycopodium dendroideum — Prickly Tree-Clubmoss / Lycopode dendroïde (Herbaceous)
Dendrolycopodium hickeyi — Hickey's Tree-Clubmoss / Lycopode de Hickey (Herbaceous)
Dendrolycopodium obscurum — Flat-branched Tree-Clubmoss / Lycopode sombre (Herbaceous)
Diphasiastrum complanatum — Northern Ground-Cedar / Lycopode aplati (Herbaceous; Rare in Region)
Diphasiastrum digitatum — Fan Clubmoss / Lycopode en éventail (Herbaceous)
Diphasiastrum tristachyum — Blue Clubmoss / Lycopode à trois épis (Herbaceous; Rare in Region)
Diphasiastrum ×habereri — Ground-cedar / Diaphasiastre de Haberer (Herbaceous; Rare in Region)
Diphasiastrum ×zeilleri — Ground-cedar / Diphasiastre de Zeiller (Herbaceous; Rare in Region)
Huperzia lucidula — Shining Firmoss / Lycopode brillant (Herbaceous)
Huperzia selago — Mountain Clubmoss / Huperzic selago (Herbaceous; Rare in Region)
Lycopodiella inundata — Inundated Bog Clubmoss / Lycopode inondé (Herbaceous; Rare in Region)
Lycopodium clavatum — Stag's-horn Clubmoss / Lycopode en massue (Herbaceous)
Lycopodium lagopus — Arctic Stag's-horn Clubmoss / Lycopode pied-de-lièvre (Herbaceous; Rare in Region)
Spinulum annotinum — Interrupted Clubmoss / Lycopode annotine (Herbaceous)

Lythraceae

Decodon verticillatus — Swamp Loosestrife / Décodon verticillé (Shrub; Rare in Region)
Lythrum alatum — Winged Loosestrife / Salicaire ailée (Herbaceous, blooms Jun, Jul, Aug; Rare in Region)

Malvaceae

Hibiscus moscheutos — Swamp Rose Mallow / Ketmie des marais (Herbaceous, blooms Jul, Aug, Sep; Naturalized in Region)
Tilia americana — Basswood / Tilleul d'Amérique (Tree, blooms Jun, Jul)

Melanthiaceae

Trillium cernuum — Nodding Trillium / Trille penché (Herbaceous, blooms May, Jun)
Trillium erectum — Red Trillium / Trille rouge (Herbaceous, blooms May)
Trillium grandiflorum — Large White Trillium / Trille blanc (Herbaceous, blooms May, Jun)
Trillium undulatum — Painted Trillium / Trille ondulé (Herbaceous, blooms May, Jun)
Veratrum viride — False Hellebore / Vératre vert (Herbaceous, blooms Jun, Jul; Outside of Ottawa Valley)

Menispermaceae

Menispermum canadense — Moonseed / Ménisperme du Canada (Vine)

Menyanthaceae

Menyanthes trifoliata — Bogbean / Ményanthe trifolié (Aquatic, blooms May, Jun)
Nymphoides cordata — Little Floatingheart / Petit nénuphar (Aquatic, blooms Jun, Jul, Aug)

Montiaceae

Claytonia caroliniana — Carolina Springbeauty / Claytonie de Caroline (Herbaceous)
Claytonia virginica — Virginia Springbeauty / Claytonie de Virginie (Herbaceous; Rare in Region)

Myricaceae

Comptonia peregrina — Sweetfern / Comptonie voyageuse (Shrub)
Myrica gale — Bog Myrtle / Myrique baumier (Shrub)

Nyctaginaceae

Mirabilis nyctaginea — Wild Four o'Clock / Belle-de-nuit nyctaginée (Herbaceous; Naturalized in Region)

Nymphaeaceae

Nuphar microphylla — Small Pond-lily / Nénuphar à petites feuilles (Aquatic, blooms Jun, Jul; Rare in Region)
Nuphar rubrodisca — Red-disk Water-lily / Nénuphar à disque rouge (Aquatic, blooms Jun, Jul; Rare in Region)
Nuphar variegata — Variegated Yellow Pond-Lily / Nénuphar panaché (Aquatic, blooms Jun, Jul, Aug)
Nymphaea odorata — American White Waterlily / Nénuphar odorant (Aquatic, blooms Jun, Jul, Aug)

Oleaceae

Fraxinus americana — White Ash / Frêne d'Amérique (Tree)
Fraxinus nigra — Black Ash / Frêne noir (Tree)
Fraxinus pennsylvanica — Green Ash / Frêne de Pennsylvanie (Tree)

Onagraceae

Chamaenerion angustifolium — Fireweed / Épilobe à feuilles étroites (Herbaceous, blooms Jun, Jul, Aug)
Circaea alpina — Alpine Enchanter's-Nightshade / Circée alpine (Herbaceous, blooms Jun, Jul)
Circaea canadensis — Broadleaf Enchanter's Nightshade / Circée du Canada (Herbaceous, blooms Jun, Jul)
Epilobium ciliatum — Fringed Willowherb / Épilobe cilié (Herbaceous, blooms Jun, Jul, Aug)
Epilobium coloratum — Cinnamon Willowherb / Épilobe coloré (Herbaceous, blooms Jul, Aug)
Epilobium densum — Downy Willow-herb / Épilobe dense (Herbaceous, blooms Jul, Aug; Rare in Region)
Epilobium hornemannii — Hornemann's Willowherb / Épilobe de Hornemann (Herbaceous, blooms Jul, Aug; Unconfirmed/Old Record)
Epilobium leptophyllum — Linear-leaf Willowherb / Épilobe à feuilles ténues (Herbaceous, blooms Jul, Aug)
Epilobium palustre — Swamp Willow-herb / Épilobe des marais (Herbaceous, blooms Jul, Aug)
Epilobium paniculatum — Tall Annual Willowherb / Épilobe paniculé (Herbaceous, blooms Jul, Aug; Unconfirmed/Old Record)
Ludwigia palustris — Water Purslane / Isnardie des marais (Herbaceous)
Oenothera biennis — Common Evening-Primrose / Onagre bisannuelle (Herbaceous, blooms Jun, Jul, Aug, Sep)
Oenothera oakesiana — Oakes's Evening- / Onagre d'Oakes (Herbaceous, blooms Jul, Aug; Rare in Region)
Oenothera parviflora — Northern Evening-Primrose / Onagre à petites fleurs (Herbaceous, blooms Jun, Jul, Aug)
Oenothera perennis — Small Sundrops / Onagre pérenne (Herbaceous, blooms Jun, Jul)
Oenothera pilosella — Meadow Evening Primrose / Onagre piloselle (Herbaceous, blooms Jun, Jul; Rare in Region)

Onocleaceae

Matteuccia struthiopteris — Ostrich Fern / Matteucie fougère-à-l'autruche (Fern)
Onoclea sensibilis — Sensitive Fern / Onoclée sensible (Fern)

Ophioglossaceae

Botrychium lanceolatum — Daisy-leaved Moonwort / Botryche lancéolé (Fern; Rare in Region)
Botrychium matricariifolium — Matricary Grapefern / Botryche à feuilles de matricaire (Fern; Rare in Region)
Botrychium minganense — Victorin Mingan Moonwort / Botryche de Mingan (Fern; Rare in Region)
Botrychium oneidense — House Blunt-lobed Grapefern / Botryche de Oneida (Fern; Rare in Region)
Botrychium rugulosum — Lawrence Grapefern / Botryche rugueux (Fern; Rare in Region)
Botrychium simplex — Least Moonwort / Botryche simple (Fern)
Botrychium tenebrosum — Swamp Moonwort / Botryche des lieux sombres (Fern; Rare in Region)
Botrypus virginianus — Rattlesnake Fern / Botryche de Virginie (Fern)
Ophioglossum pusillum — Adder's-tongue Fern / Ophioglosse nain (Fern; Rare in Region)
Sceptridium dissectum — Cutleaf Grapefern / Botryche découpé (Fern)
Sceptridium multifidum — Leathery Grapefern / Botryche multifide (Fern)

Orchidaceae

Amerorchis rotundifolia — Hulten Round-leaved Orchis / Amerorchide à feuilles rondes (Herbaceous, blooms Jun, Jul; Rare in Region)
Aplectrum hyemale — Putty-root / Aplectre d'hiver (Herbaceous, blooms May, Jun; Unconfirmed/Old Record)
Arethusa bulbosa — Dragon's Mouth / Aréthuse bulbeuse (Herbaceous, blooms Jun; Rare in Region)
Calopogon tuberosus — Tuberous Grasspink / Calopogon tubéreux (Herbaceous, blooms Jun, Jul; Rare in Region)
Calypso bulbosa — Fairy-Slipper / Calypso bulbeux (Herbaceous, blooms May; Rare in Region)
Corallorhiza maculata — Spotted Coralroot / Corallorhize maculée (Herbaceous, blooms Jun, Jul; Rare in Region)
Corallorhiza odontorhiza — Fall Coral-root / Corallorhize à dents (Herbaceous, blooms Aug, Sep; Rare in Region)
Corallorhiza striata — Striped Coralroot / Corallorhize striée (Herbaceous, blooms May, Jun; Rare in Region)
Corallorhiza trifida — Northern Coralroot / Corallorhize trifide (Herbaceous, blooms May, Jun)
Cypripedium acaule — Pink Lady's Slipper / Cypripède acaule (Herbaceous, blooms May, Jun)
Cypripedium arietinum — Ram's-head Lady's Slipper / Cypripède tête-de-bélier (Herbaceous, blooms May, Jun)
Cypripedium parviflorum — Yellow Lady's Slipper / Cypripède à petites fleurs (Herbaceous, blooms May, Jun)
Cypripedium reginae — Showy Lady's Slipper / Cypripède royal (Herbaceous, blooms Jun, Jul)
Dactylorhiza viridis — Frog Orchid / Dactylorhize vert (Herbaceous, blooms Jun, Jul)
Galearis rotundifolia — Small Round-leaved Orchid / Orchis à feuilles rondes (Herbaceous, blooms Jun, Jul)
Galearis spectabilis — Showy Orchis / Orchis spectaculaire (Herbaceous, blooms May, Jun; Rare in Region)
Goodyera pubescens — Downy Rattlesnake Plantain / Goodyère pubescente (Herbaceous, blooms Jul, Aug; Rare in Region)
Goodyera repens — Lesser Rattlesnake Plantain / Goodyère rampante (Herbaceous, blooms Jul, Aug; Rare in Region)
Goodyera tesselata — Checkered Rattlesnake Plantain / Goodyère tessellée (Herbaceous, blooms Jul, Aug; Rare in Region)
Liparis loeselii — Fen Orchid / Liparis de Loesel (Herbaceous, blooms Jun, Jul; Rare in Region)
Listera australis — Southern Twayblade / Listère australe (Herbaceous, blooms Jun, Jul; Rare in Region)
Malaxis brachypoda — White Adder's-Mouth / Malaxis à pédicelles courts (Herbaceous, blooms Jul, Aug)
Malaxis unifolia — Green Adder's-Mouth / Malaxis unifolié (Herbaceous, blooms Jun, Jul, Aug)
Neottia auriculata — Auricled Twayblade / Listère auriculée (Herbaceous, blooms Jun, Jul)
Neottia cordata — Heartleaf Twayblade / Néottie cordée (Herbaceous, blooms Jun, Jul)
Platanthera aquilonis — North Wind Bog Orchid / Platanthère du nord (Herbaceous, blooms Jun, Jul)
Platanthera blephariglottis — White-fringed Bog / Platanthère à gorge frangée (Herbaceous, blooms Jul, Aug; Rare in Region)
Platanthera clavellata — Small Green Wood Orchid / Platanthère claviforme (Herbaceous, blooms Jul, Aug; Rare in Region)
Platanthera dilatata — White Bog Orchid / Platanthère dilatée (Herbaceous, blooms Jun, Jul; Rare in Region)
Platanthera flava — Pale Green Orchid / Platanthère jaune (Herbaceous, blooms Jun, Jul; Rare in Region)
Platanthera grandiflora — Greater Purple Fringed Orchid / Platanthère à grandes fleurs (Herbaceous, blooms Jun, Jul; Rare in Region)
Platanthera hookeri — Hooker's Orchid / Platanthère de Hooker (Herbaceous, blooms Jun, Jul)
Platanthera huronensis — Fragrant Green Orchid / Platanthère du lac Huron (Herbaceous, blooms Jun, Jul; Rare in Region)
Platanthera lacera — Ragged Fringed Orchid / Platanthère lacérée (Herbaceous, blooms Jun, Jul)
Platanthera leucophaea — Eastern Prairie Fringed Orchid / Platanthère blanchâtre des prairies (Herbaceous, blooms Jun, Jul; Rare in Region)
Platanthera macrophylla — Large Roundleaf Orchid / Platanthère à grandes feuilles (Herbaceous, blooms Jun, Jul; Rare in Region)
Platanthera obtusata — Blunt-leaved Rein Orchid / Platanthère obtuse (Herbaceous, blooms Jun, Jul; Rare in Region)
Platanthera orbiculata — Round-leaved Bog Orchid / Platanthère orbiculaire (Herbaceous, blooms Jun, Jul; Rare in Region)
Platanthera psycodes — Lesser Purple Fringed Orchid / Platanthère à grandes fleurs (Herbaceous, blooms Jun, Jul; Rare in Region)
Pogonia ophioglossoides — Rose Pogonia / Pogonie langue-de-serpent (Herbaceous, blooms Jun, Jul; Rare in Region)
Spiranthes arcisepala — Appalachian Ladies’ Tresses / Spiranthe à sépales arqués (Herbaceous, blooms Aug, Sep; Rare in Region)
Spiranthes casei — Case's Ladies' Tresses / Spiranthe de Case (Herbaceous, blooms Aug, Sep; Rare in Region)
Spiranthes cernua — Nodding Ladies-tresses / Spiranthe penchée (Herbaceous, blooms Aug, Sep)
Spiranthes incurva — Sphinx Ladies’ Tresses / Spiranthe courbée (Herbaceous, blooms Aug, Sep)
Spiranthes lacera — Slender Ladies' Tresses / Spiranthe lacérée (Herbaceous, blooms Aug, Sep; Rare in Region)
Spiranthes lucida — Shining Ladies' Tresses / Spiranthe luisante (Herbaceous, blooms Jun, Jul; Rare in Region)
Spiranthes magnicamporum — Great Plains Ladies' Tresses / Spiranthe des grandes plaines (Herbaceous, blooms Sep, Oct)
Spiranthes romanzoffiana — Hooded Ladies' Tresses / Spiranthe de Romanzoff (Herbaceous, blooms Jul, Aug; Rare in Region)

Orobanchaceae

Agalinis purpurea — Purple False Foxglove / Agalin pourpre (Herbaceous, blooms Aug, Sep; Rare in Region)
Agalinis tenuifolia — Slender False Foxglove / Agalin à feuilles ténues (Herbaceous, blooms Aug, Sep)
Aphyllon uniflorum — One-flowered Cancer-Root / Aphyllon uniflore (Herbaceous, blooms May, Jun; Rare in Region)
Castilleja coccinea — Scarlet Indian Paintbrush / Castilléjie écarlate (Herbaceous, blooms May, Jun, Jul; Outside of Ottawa Valley)
Conopholis americana — American Cancer-Root / Conopholis d'Amérique (Herbaceous, blooms May, Jun; Rare in Region)
Epifagus virginiana — Beechdrops / Épifagus de Virginie (Herbaceous, blooms Sep, Oct)
Melampyrum lineare — Narrowleaf Cow Wheat / Mélampyre linéaire (Herbaceous, blooms Jun, Jul, Aug)
Pedicularis canadensis — Canadian Lousewort / Pédiculaire du Canada (Herbaceous, blooms May, Jun; Rare in Region)
Rhinanthus minor — Yellow Rattle / Rhinanthe mineur (Herbaceous, blooms Jun, Jul)

Osmundaceae

Claytosmunda claytoniana — Interrupted Fern / Osmonde de Clayton (Fern)
Osmunda spectabilis — American Royal Fern / Osmonde royale (Fern)
Osmundastrum cinnamomeum — Cinnamon Fern / Osmonde cannelle (Fern)

Oxalidaceae

Oxalis dillenii — Slender Yellow Woodsorrel / Oxalide de Dillen (Herbaceous, blooms May, Jun, Jul, Aug)
Oxalis montana — Mountain Woodsorrel / Oxalide de montagne (Herbaceous, blooms Jun, Jul)
Oxalis stricta — Upright Yellow Woodsorrel / Oxalide dressée (Herbaceous, blooms May, Jun, Jul, Aug)

Papaveraceae

Adlumia fungosa — Climbing Fumitory / Adlumie fongueuse (Vine, blooms Jun, Jul, Aug, Sep; Rare in Region)
Capnoides sempervirens — Rock Harlequin / Corydale toujours verte (Herbaceous, blooms May, Jun, Jul)
Corydalis aurea — Golden Corydalis / Corydale dorée (Herbaceous, blooms Apr, May, Jun)
Dicentra canadensis — Squirrel Corn / Cœur-saignant du Canada (Herbaceous, blooms Apr, May)
Dicentra cucullaria — Dutchman's Breeches / Cœur-saignant cucullaire (Herbaceous, blooms Apr, May)
Sanguinaria canadensis — Bloodroot / Sanguinaire du Canada (Herbaceous, blooms Apr, May)

Penthoraceae

Penthorum sedoides — Ditch Stonecrop / Penthore faux-orpin (Herbaceous)

Phrymaceae

Mimulus ringens — Allegheny Monkeyflower / Mimule à gorge close (Herbaceous, blooms Jun, Jul, Aug)
Phryma leptostachya — American Lopseed / Phryma à épi grêle (Herbaceous, blooms Jun, Jul, Aug)

Phytolaccaceae

Phytolacca americana — American Pokeweed / Phytolaque d'Amérique (Herbaceous, blooms Jun, Jul, Aug; Rare in Region)

Pinaceae

Abies balsamea — Balsam Fir / Sapin baumier (Tree)
Larix laricina — Tamarack / Mélèze laricin (Tree)
Picea glauca — White Spruce / Épinette blanche (Tree)
Picea mariana — Black Spruce / Épinette noire (Tree)
Picea rubens — Red Spruce / Épinette rouge (Tree)
Pinus banksiana — Jack Pine / Pin de Banks (Tree)
Pinus resinosa — Red Pine / Pin rouge (Tree)
Pinus rigida — Pitch Pine / Pin rigide (Tree, blooms May; Outside of Ottawa Valley)
Pinus strobus — Eastern White Pine / Pin blanc (Tree)
Tsuga canadensis — Eastern Hemlock / Pruche du Canada (Tree)

Plantaginaceae

Callitriche hermaphroditica — Water-starwort / Callitriche hermaphrodite (Herbaceous, blooms Jun, Jul)
Callitriche palustris — Vernal Water-starwort / Callitriche des marais (Herbaceous, blooms Jun, Jul)
Chelone glabra — White Turtlehead / Chélone glabre (Herbaceous, blooms Aug, Sep)
Gratiola aurea — Golden Hedge-Hyssop / Gratiolle dorée (Herbaceous, blooms Jun, Jul, Aug; Rare in Region)
Gratiola neglecta — Clammy Hedge-Hyssop / Gratiolle négligée (Herbaceous, blooms Jun, Jul, Aug)
Hippurus vulgaris — Common Mare's-tail / Pesse commune (Aquatic, blooms Jun, Jul)
Leucospora multifida — Obi-Wan Conobea / Leucospora multifide (Herbaceous; Rare in Region)
Littorella americana — Shore-grass / Littorelle d'Amérique (Herbaceous, blooms Jun, Jul; Rare in Region)
Penstemon digitalis — Foxglove Beardtongue / Penstémon digitale (Herbaceous, blooms Jun, Jul; Naturalized in Region)
Penstemon hirsutus — Hairy Beardtongue / Penstémon hirsute (Herbaceous, blooms Jun, Jul; Rare in Region)
Plantago rugelii — American Plantain / Plantain de Rugel (Herbaceous)
Veronica americana — American Brooklime / Véronique d'Amérique (Herbaceous, blooms Jun, Jul, Aug)
Veronica peregrina — Purslane Speedwell / Véronique pèlerine (Herbaceous)
Veronica scutellata — Marsh Speedwell / Véronique scutellée (Herbaceous, blooms Jun, Jul, Aug)
Veronica serpyllifolia — Thyme-leaved Speedwell / Véronique à feuilles de serpolet (Herbaceous, blooms Apr, May, Jun)

Platanaceae

Platanus occidentalis — American Sycamore / Platane occidental (Tree; Rare in Region)

Poaceae

Agrostis perennans — Perennial Bentgrass / Agrostide pérennante (Grass / Sedge / Rush)
Agrostis scabra — Rough Bentgrass / Agrostide scabre (Grass / Sedge / Rush)
Alopecurus aequalis — Short-awn Foxtail / Vulpin à anthères rousses (Grass / Sedge / Rush)
Anatherum virginicum — Broomsedge Bluestem / Barbon de Virginie (Grass / Sedge / Rush, blooms Sep, Oct)
Andropogon gerardi — Big Bluestem / Grand barbon (Grass / Sedge / Rush)
Anthoxanthum hirtum — Northern Sweetgrass / Hiérochloé hérissée (Grass / Sedge / Rush)
Anthoxanthum nitens — Vanilla Sweetgrass / hiérochloé odorante (, blooms May, Jun; Rare in Region)
Aristida basiramea — Forked Three-awn / Aristide à rameaux basaux (Grass / Sedge / Rush, blooms Jul, Aug; Rare in Region)
Avenella flexuosa — Wavy Hair-Grass / Canche flexueuse (Grass / Sedge / Rush)
Brachyelytrum aristosum — Northern Shorthusk / Brachyélytrum aristé (Grass / Sedge / Rush)
Brachyelytrum erectum — Southern Bearded / Brachélytrum dressé (Grass / Sedge / Rush, blooms Jun, Jul; Rare in Region)
Bromus ciliatus — Fringed Brome / Brome cilié (Grass / Sedge / Rush)
Bromus kalmii — Prairie Brome / Brome de Kalm (Grass / Sedge / Rush; Rare in Region)
Bromus latiglumis — Canada Brome Grass / Brome à larges glumes (Grass / Sedge / Rush, blooms Jul, Aug; Rare in Region)
Calamagrostis canadensis — Canadian Bluejoint / Calamagrostide du Canada (Grass / Sedge / Rush)
Cinna arundinacea — Stout Woodreed / Cinna roseau (Grass / Sedge / Rush, blooms Aug, Sep)
Cinna latifolia — Drooping Woodreed / Cinna à larges feuilles (Grass / Sedge / Rush, blooms Aug, Sep)
Coleataenia rigidula — Stiff Panic Grass / Coléaténie rigide (Grass / Sedge / Rush, blooms Aug, Sep)
Danthonia compressa — Flattened Oat Grass / Danthonie comprimée (Grass / Sedge / Rush, blooms Jun, Jul)
Danthonia spicata — Poverty Oatgrass / Danthonie à épi (Grass / Sedge / Rush; Rare in Region)
Deschampsia cespitosa — Tufted Hair Grass / Deschampsie cespiteuse (Grass / Sedge / Rush, blooms Jun, Jul; Rare in Region)
Deschampsia flexuosa — Wavy Hair Grass / Deschampsie flexueuse (Grass / Sedge / Rush, blooms Jun, Jul; Rare in Region)
Dichanthelium boreale — Freckmann Northern Panic Grass / Dichantelium boréal (Grass / Sedge / Rush, blooms Jun, Jul; Rare in Region)
Dichanthelium depauperatum — Starved Witchgrass / Panic appauvri (Grass / Sedge / Rush; Rare in Region)
Dichanthelium latifolium — Broad-leaved Panic Grass / Panic à larges feuilles (Grass / Sedge / Rush; Rare in Region)
Dichanthelium linearifolium — Slim-leaf Witchgrass / Panic à feuilles linéaires (Grass / Sedge / Rush)
Dichanthelium xanthophysum — Slender Panic Grass / Panic à gaines jaunes (Grass / Sedge / Rush; Rare in Region)
Echinochloa muricata — Rough Barnyard Grass / Échinochloa muriqué (Grass / Sedge / Rush)
Echinochloa walteri — Heller Walter's Barnyard Grass / Échinochloa de Walter (Grass / Sedge / Rush, blooms Aug, Sep; Rare in Region)
Elymus canadensis — Canada Wild Rye / Élyme du Canada (Grass / Sedge / Rush; Rare in Region)
Elymus hystrix — Bottlebrush Grass / Élyme faux-hystrix (Grass / Sedge / Rush)
Elymus trachycaulus — Slender Wheat Grass / Élyme à tiges rudes (Grass / Sedge / Rush; Rare in Region)
Elymus villosus — Hairy Rye Grass / Élyme velu (Grass / Sedge / Rush, blooms Jun, Jul; Rare in Region)
Elymus virginicus — Virginia Wildrye / Élyme de Virginie (Grass / Sedge / Rush; Rare in Region)
Elymus wiegandii — Wiegand's Wild Rye / Élyme de Wiegand (Grass / Sedge / Rush, blooms Jun, Jul; Rare in Region)
Elymus ×maltei — Rye Grass / Élyme de Malte (Grass / Sedge / Rush, blooms Jun, Jul; Rare in Region)
Eragrostis frankii — Meyer Frank's Love Grass / Éragrostide de Frank (Grass / Sedge / Rush, blooms Aug, Sep; Rare in Region)
Eragrostis hypnoides — Teal Lovegrass / Éragrostide mousse (Grass / Sedge / Rush; Rare in Region)
Eragrostis pectinacea — Purple Love Grass / Éragrostide pectiné (Grass / Sedge / Rush)
Festuca subverticillata — Nodding Fescue / Fétuque à inflorescence subverticillée (Grass / Sedge / Rush)
Glyceria borealis — Boreal Manna Grass / Glycérie boréale (Grass / Sedge / Rush; Rare in Region)
Glyceria canadensis — Rattlesnake Mannagrass / Glycérie du Canada (Grass / Sedge / Rush; Rare in Region)
Glyceria grandis — American Manna Grass / Grande glycérie (Grass / Sedge / Rush; Rare in Region)
Glyceria melicaria — Slender Mannagrass / Glycérie à feuilles de mélique (Grass / Sedge / Rush; Rare in Region)
Glyceria septentrionalis — Southern Manna Grass / Glycérie septentrionale (Grass / Sedge / Rush, blooms Jun, Jul; Rare in Region)
Glyceria striata — Fowl Mannagrass / Glycérie striée (Grass / Sedge / Rush)
Glyceria × gatineauensis — Gatineau Manna Grass (Herbaceous, blooms Jun, Jul)
Glyceria ×laxa — Manna Grass / Glycérie lâche (Grass / Sedge / Rush, blooms Jun, Jul; Rare in Region)
Glyceria ×ottawensis — Manna Grass / Glycérie d'Ottawa (Grass / Sedge / Rush, blooms Jun, Jul)
Graphephorum melicoides — False Oat Grass / Graphéphore faux-mélique (Grass / Sedge / Rush, blooms Jun)
Hordeum jubatum — Foxtail Barley / Orge à crinière (Grass / Sedge / Rush)
Leersia oryzoides — Rice Cutgrass / Léersie faux-riz (Grass / Sedge / Rush)
Leersia virginica — White Grass / Léersie de Virginie (Grass / Sedge / Rush)
Melica smithii — Smith's Melic / Mélique de Smith (Grass / Sedge / Rush, blooms Jun, Jul; Rare in Region)
Milium effusum — Wood Millet / Millet diffus (Grass / Sedge / Rush; Rare in Region)
Muhlenbergia frondosa — Wirestem Muhly / Muhlenbergie feuillée (Grass / Sedge / Rush; Rare in Region)
Muhlenbergia glomerata — Marsh Muhly / Muhlenbergie glomérulée (Grass / Sedge / Rush)
Muhlenbergia mexicana — Mexican Muhly / Muhlenbergie du Mexique (Grass / Sedge / Rush)
Muhlenbergia sylvatica — Gray Woodland Muhlenbergia / Muhlenbergie sylvicole (Grass / Sedge / Rush, blooms Aug, Sep; Rare in Region)
Muhlenbergia tenuifolia — Slender Muhly / Muhlenbergie ténue (Grass / Sedge / Rush, blooms Aug, Sep; Rare in Region)
Muhlenbergia uniflora — One-flower Muhly / Muhlenbergie uniflore (Grass / Sedge / Rush, blooms Aug, Sep)
Oryzopsis asperifolia — White-grained Mountain-Ricegrass / Oryzopsis à feuilles rudes (Grass / Sedge / Rush; Rare in Region)
Panicum capillare — Witch Grass / Panic capillaire (Grass / Sedge / Rush)
Panicum dichotomiflorum — Smooth Witchgrass / Panic dichotome (Grass / Sedge / Rush; Naturalized in Region)
Panicum flexile — Wiry Witch Grass / Panic flexible (Grass / Sedge / Rush; Rare in Region)
Panicum philadelphicum — Philadelphia Panic Grass / Panic de Philadelphie (Grass / Sedge / Rush)
Panicum tuckermanii — Tuckerman's Panic Grass / Panic de Tuckerman (Grass / Sedge / Rush, blooms Jul, Aug)
Panicum virgatum — Switchgrass / Panic raide (Grass / Sedge / Rush; Rare in Region)
Patis racemosa — Black-fruit Mountain-Ricegrass / Stipe à grappes (Grass / Sedge / Rush)
Phalaris arundinacea — Reed Canary Grass / Baldingère faux-roseau (Grass / Sedge / Rush)
Phragmites americanus — American Reed / Roseau commun d'Amérique (Grass / Sedge / Rush; Rare in Region)
Piptatheropsis pungens — Sharp-leaved Mountain / Piptathéropside piquant (Grass / Sedge / Rush, blooms Jun)
Poa alsodes — Grove Meadow Grass / Pâturin des bois (Grass / Sedge / Rush; Rare in Region)
Poa glaucantha — Gaudin Blue Meadow Grass / Pâturin glauque (Grass / Sedge / Rush, blooms Jun; Unconfirmed/Old Record)
Poa palustris — Swamp Meadow-Grass / Pâturin des marais (Grass / Sedge / Rush)
Poa saltuensis — Forest Meadow Grass / Pâturin des sous-bois (Grass / Sedge / Rush, blooms Jun; Rare in Region)
Schizachne purpurascens — Purple Oat / Schizachné pourprant (Grass / Sedge / Rush; Rare in Region)
Schizachyrium scoparium — Little Bluestem / Petit barbon (Grass / Sedge / Rush; Rare in Region)
Sorghastrum nutans — Indiangrass / Faux-sorgho penché (Grass / Sedge / Rush; Rare in Region)
Sphenopholis intermedia — Slender Wedge Grass / Sphénopholis intermédiaire (Grass / Sedge / Rush, blooms Jun, Jul)
Sporobolus compositus — Tall Dropseed / Sporobole composé (Grass / Sedge / Rush, blooms Aug, Sep; Rare in Region)
Sporobolus cryptandrus — Sand Dropseed / Sporobole à étamines cachées (Grass / Sedge / Rush)
Sporobolus heterolepis — Prairie Dropseed / Sporobole à glumes inégales (Grass / Sedge / Rush; Rare in Region)
Sporobolus michauxianus — Prairie Cordgrass / Sporobole de Michaux (Grass / Sedge / Rush)
Sporobolus neglectus — Small Dropseed / Sporobole négligé (Grass / Sedge / Rush)
Sporobolus vaginiflorus — Poverty Dropseed / Sporobole à fleurs engainées (Grass / Sedge / Rush)
Torreyochloa pallida — Church Fernald's Manna Grass / Torreyochloé pâle (Grass / Sedge / Rush, blooms Jun, Jul; Rare in Region)
Trisetum spicatum — Spike Trisetum / Trisète à épi (Grass / Sedge / Rush, blooms Jun, Jul; Rare in Region)
Zizania aquatica — Annual Wild Rice / Zizanie aquatique (Grass / Sedge / Rush; Rare in Region)
Zizania palustris — Northern Wild Rice / Zizanie des marais (Grass / Sedge / Rush)

Podostemaceae

Podostemum ceratophyllum — Threadfoot / Podostème à feuilles de cornifle (Aquatic; Rare in Region)

Polemoniaceae

Phlox divaricata — Blue Phlox / Phlox divariqué (Herbaceous, blooms May, Jun; Rare in Region)
Phlox subulata — Moss Phlox / Phlox subulé (Herbaceous, blooms Apr, May, Jun; Naturalized in Region)

Polygalaceae

Polygaloides paucifolia — Fringed Polygala / Polygale peu feuillé (Herbaceous, blooms May, Jun)
Senega officinalis — Seneca Snakeroot / Sénéka officinal (Herbaceous, blooms May, Jun; Rare in Region)
Senega polygama — Racemed Milkwort / Sénéka polygame (Herbaceous, blooms May, Jun; Rare in Region)
Senega sanguinea — Field Milkwort / Sénéka sanguin (Herbaceous, blooms May, Jun)
Senega verticillata — Whorled Milkwort / Sénéca verticillé (Herbaceous, blooms Aug, Sep)

Polygonaceae

Fallopia scandens — Climbing False Buckwheat / Renouée grimpante (Vine)
Parogonum ciliinode — Fringed Black Bindweed / Renouée ciliée (Vine)
Persicaria amphibia — Water Smartweed / Renouée amphibie (Aquatic, blooms Jul, Aug)
Persicaria arifolia — Halberd-leaved Tearthumb / Renouée à feuilles d'arum (Herbaceous, blooms Jul, Aug; Rare in Region)
Persicaria careyi — Carey's smartweed / renouée de Carey (Herbaceous, blooms Jul, Aug; Rare in Region)
Persicaria hydropiperoides — Swamp Smartweed / Renouée fausse-hydropiper (Herbaceous, blooms Jul, Aug, Sep; Rare in Region)
Persicaria lapathifolia — Pale Smartweed / Renouée à feuilles de patience (Herbaceous, blooms Jul, Aug, Sep)
Persicaria pensylvanica — Pinkweed / Renouée de Pennsylvanie (Herbaceous, blooms Jul, Aug, Sep)
Persicaria punctata — Small Water Knotweed / Renouée ponctuée (Herbaceous, blooms Jul, Aug; Rare in Region)
Persicaria sagittata — Arrow-leaved Tearthumb / Renouée sagittée (Herbaceous, blooms Jul, Aug)
Persicaria virginiana — American Jumpseed / Renouée de Virginie (Herbaceous)
Polygonella articulata — Coastal Jointweed / Polygonelle articulée (Herbaceous; Rare in Region)
Polygonum achoreum — Blake Leathery Knotweed / Renouée achore (Herbaceous, blooms Jul, Aug)
Polygonum douglasii — Douglas' Knotweed / Renouée de Douglas (Herbaceous)
Rumex britannica — Greater Water Dock / Patience britannique (Herbaceous)
Rumex salicifolius — Willow Dock / Patience à feuilles de saule (Herbaceous, blooms Jun, Jul; Rare in Region)
Rumex verticillatus — Swamp Dock / Patience verticillée (Herbaceous)

Polypodiaceae

Polypodium appalachianum — Appalachian Rockcap Fern / Polypode des Appalaches (Fern; Rare in Region)
Polypodium virginianum — Rock Polypody / Polypode de Virginie (Fern)

Pontederiaceae

Heteranthera dubia — Water Star-Grass / Hétéranthère douteuse (Aquatic, blooms Jul, Aug)
Pontederia cordata — Pickerelweed / Pontédérie cordée (Aquatic, blooms Jul, Aug, Sep)

Potamogetonaceae

Potamogeton alpinus — Alpine Pondweed / Potamot alpin (Aquatic, blooms Jun, Jul)
Potamogeton amplifolius — Broad-leaved Pondweed / Potamot à grandes feuilles (Aquatic; Rare in Region)
Potamogeton epihydrus — Ribbon-leaved Pondweed / Potamot épihydre (Aquatic)
Potamogeton foliosus — Leafy Pondweed / Potamot feuillu (Aquatic, blooms Jun, Jul; Rare in Region)
Potamogeton friesii — Fries’ Pondweed / Potamot de Fries (Aquatic, blooms Jun, Jul; Rare in Region)
Potamogeton gramineus — Grass-leaved Pondweed / Potamot graminiforme (Aquatic; Rare in Region)
Potamogeton illinoensis — Shining Pondweed / Potamot de l'Illinois (Aquatic; Rare in Region)
Potamogeton natans — Floating-leaved Pondweed / Potamot nageant (Aquatic)
Potamogeton nodosus — Longleaf Pondweed / Potamot noueux (Aquatic; Rare in Region)
Potamogeton obtusifolius — Koch Blunt-leaf Pondweed / Potamot à feuilles obtuses (Aquatic, blooms Jun, Jul; Rare in Region)
Potamogeton perfoliatus — Perfoliate Pondweed / Potamot perfolié (Aquatic; Rare in Region)
Potamogeton praelongus — White-stemmed Pondweed / Potamot très long (Aquatic; Rare in Region)
Potamogeton pusillus — Small Pondweed / Potamot nain (Aquatic, blooms Jun, Jul)
Potamogeton richardsonii — Richardson's Pondweed / Potamot de Richardson (Aquatic)
Potamogeton robbinsii — Robbins' Pondweed / Potamot de Robbins (Aquatic)
Potamogeton spirillus — Spiral Pondweed / Potamot spirillé (Aquatic)
Potamogeton strictifolius — Stiff-leaved Pondweed / Potamot à feuilles raides (Aquatic, blooms Jun, Jul)
Potamogeton vaseyi — Robbins Vasey's Pondweed / Potamot de Vasey (Aquatic, blooms Jun, Jul; Rare in Region)
Potamogeton zosteriformis — Eel-grass Pondweed / Potamot zostériforme (Aquatic)
Stuckenia pectinata — Fennel-leaf Pondweed / Potamot pectiné (Aquatic)

Primulaceae

Lysimachia borealis — Northern Starflower / Lysimaque boréale (Herbaceous, blooms May, Jun)
Lysimachia ciliata — Fringed Loosestrife / Lysimaque ciliée (Herbaceous, blooms Jun, Jul)
Lysimachia hybrida — Hybrid Loosestrife / Lysimaque hybride (Herbaceous, blooms Jul, Aug; Rare in Region)
Lysimachia quadrifolia — Whorled Loosestrife / Lysimaque à quatre feuilles (Herbaceous, blooms Jun, Jul; Rare in Region)
Lysimachia terrestris — Swamp Candles / Lysimaque terrestre (Herbaceous, blooms Jun, Jul, Aug)
Lysimachia thyrsiflora — Tufted Loosestrife / Lysimaque thyrsiflore (Herbaceous, blooms May, Jun)
Samolus parviflorus — Seaside Brookweed / Samole de Vahl (Herbaceous, blooms Jun, Jul; Rare in Region)

Pteridaceae

Adiantum pedatum — Northern Maidenhair Fern / Capillaire du Canada (Fern; Rare in Region)
Cryptogramma stelleri — Steller's Rock-Brake / Cryptogramme de Steller (Fern; Rare in Region)
Pellaea atropurpurea — Purple-stem Cliffbrake / Pellée pourpre (Fern; Rare in Region)
Pellaea glabella — Smooth Cliffbrake / Pellée glabre (Fern; Rare in Region)

Ranunculaceae

Actaea pachypoda — White Baneberry / Actée blanche (Herbaceous, blooms May, Jun)
Actaea rubra — Red Baneberry / Actée rouge (Herbaceous, blooms May, Jun)
Anemonastrum canadense — Meadow Anemone / Anémone du Canada (Herbaceous, blooms Jun, Jul)
Anemone cylindrica — Cylindrical Thimbleweed / Anémone cylindrique (Herbaceous, blooms Jun, Jul)
Anemone virginiana — Tall Thimbleweed / Anémone de Virginie (Herbaceous, blooms Jun, Jul)
Anemonoides quinquefolia — Wood Anemone / Anémone à cinq folioles (Herbaceous, blooms Apr, May)
Aquilegia canadensis — Red Columbine / Ancolie du Canada (Herbaceous, blooms May, Jun)
Caltha palustris — Marsh Marigold / Populage des marais (Herbaceous, blooms Apr, May)
Clematis occidentalis — Purple Clematis / Clématite de l'Ouest (Vine, blooms May, Jun)
Clematis virginiana — Virgin's-Bower / Clématite de Virginie (Vine, blooms Jul, Aug)
Coptis trifolia — Threeleaf Goldthread / Coptide trifolié (Herbaceous, blooms Apr, May)
Hepatica acutiloba — Sharp-lobed Hepatica / Hépatique à lobes aigus (Herbaceous, blooms Apr, May)
Hepatica americana — Round-lobed Hepatica / Hépatique d'Amérique (Herbaceous, blooms Apr, May)
Ranunculus abortivus — Small-flowered Buttercup / Renoncule abortive (Herbaceous, blooms Apr, May, Jun)
Ranunculus caricetorum — Fen Crowfoot / Renoncule des laîches (Herbaceous, blooms May, Jun)
Ranunculus cymbalaria — Pursh Seaside Buttercup / Renoncule cymbalaire (Herbaceous, blooms May, Jun; Rare in Region)
Ranunculus fascicularis — Early Buttercup / Renoncule fasciculée (Herbaceous, blooms Apr, May; Rare in Region)
Ranunculus flabellaris — Yellow Water-Crowfoot / Renoncule flabelliforme (Aquatic, blooms May, Jun)
Ranunculus flammula — Lesser Spearwort / Renoncule flammette (Herbaceous, blooms Jun, Jul)
Ranunculus macounii — Macoun's Buttercup / Renoncule de Macoun (Herbaceous, blooms Jun, Jul; Rare in Region)
Ranunculus pensylvanicus — Bristly Crowfoot / Renoncule de Pennsylvanie (Herbaceous, blooms Jun, Jul, Aug)
Ranunculus recurvatus — Hooked Buttercup / Renoncule recourbée (Herbaceous, blooms May, Jun)
Ranunculus reptans — Creeping Spearwort / Renoncule rampante (Herbaceous, blooms Jun, Jul)
Ranunculus sceleratus — Cursed Crowfoot / Renoncule scélérate (Herbaceous, blooms May, Jun, Jul; Rare in Region)
Thalictrum confine — Western Meadow-rue / Pigamon confiné (Herbaceous, blooms Jun, Jul; Rare in Region)
Thalictrum dasycarpum — Purple Meadow-Rue / Pigamon à fruits velus (Herbaceous, blooms Jun, Jul; Rare in Region)
Thalictrum dioicum — Early Meadow-Rue / Pigamon dioïque (Herbaceous, blooms Apr, May)
Thalictrum pubescens — Tall Meadow-Rue / Pigamon pubescent (Herbaceous, blooms Jun, Jul)
Thalictrum thalictroides — Rue Anemone / Thalictre à feuilles de thalictre (Herbaceous, blooms Apr, May; Rare in Region)

Rhamnaceae

Ceanothus americanus — New Jersey Tea / Céanothe d'Amérique (Shrub, blooms Jun, Jul; Rare in Region)
Ceanothus herbaceus — Inland Ceanothus / Céanothe herbacé (Shrub, blooms Jun, Jul; Rare in Region)
Rhamnus alnifolia — Alderleaf Buckthorn / Nerprun à feuilles d'aulne (Shrub)

Rosaceae

Agrimonia gryposepala — Tall Hairy Agrimony / Aigremoine à sépales crochets (Herbaceous, blooms Jul, Aug, Sep)
Agrimonia striata — Roadside Agrimony / Aigremoine striée (Herbaceous, blooms Jul, Aug)
Amelanchier amabalis — Beautiful Serviceberry / Amélanchier gracieux (Shrub; Rare in Region)
Amelanchier arborea — Common Serviceberry / Amélanchier arborescent (Tree, blooms Apr, May)
Amelanchier bartramiana — Mountain Juneberry / Amélanchier de Bartram (Shrub, blooms May; Rare in Region)
Amelanchier canadensis — Canadian Serviceberry / Amélanchier du Canada (Shrub, blooms Apr, May; Naturalized in Region)
Amelanchier humilis — Low Serviceberry / Amélanchier humble (Shrub, blooms May; Rare in Region)
Amelanchier laevis — Smooth Shadbush / Amélanchier glabre (Tree, blooms Apr, May)
Amelanchier sanguinea — Roundleaf Shadbush / Amélanchier sanguin (Shrub, blooms May)
Amelanchier stolonifera — Running Serviceberry / Amélanchier stolonifère (Shrub, blooms May)
Argentina anserina — Common Silverweed / Potentille des oies (Herbaceous, blooms May, Jun, Jul)
Aronia melanocarpa — Black Chokeberry / Aronie à fruits noirs (Shrub, blooms May)
Aronia × prunifolia — Purple Chokeberry / Aronie à feuilles de prunier (Shrub, blooms May)
Comarum palustre — Marsh Cinquefoil / Comaret des marais (Herbaceous, blooms Jun, Jul)
Crataegus canadensis — Canadian Hawthorn / Aubépine du Canada (Tree, blooms May, Jun)
Crataegus chrysocarpa — Fireberry Hawthorn / Aubépine à fruits dorés (Tree, blooms May, Jun)
Crataegus coccinea — Scarlet Hawthorn / Aubépine écarlate (Tree, blooms May, Jun)
Crataegus crus-galli — Cockspur Hawthorn / Aubépine ergot-de-coq (Tree, blooms May, Jun; Rare in Region)
Crataegus flabellata — Fanleaf Hawthorn / Aubépine flabelliforme (Tree, blooms May, Jun; Rare in Region)
Crataegus fluviatilis — Fort Sheridan Hawthorn / Aubépine fluviatile (Tree, blooms May, Jun; Rare in Region)
Crataegus holmesiana — Ashe Hawthorn / Aubépine de Holmes (Shrub, blooms May, Jun; Rare in Region)
Crataegus intricata — Lange Hawthorn / Aubépine entrelacée (Shrub, blooms May; Unconfirmed/Old Record)
Crataegus irrasa — Hawthorn / Aubépine irrasa (Shrub, blooms May, Jun; Rare in Region)
Crataegus macracantha — Large-thorn Hawthorn / Aubépine à longues épines (Tree, blooms May, Jun)
Crataegus macrosperma — Big-fruit Hawthorn / Aubépine à grands fruits (Tree, blooms May, Jun)
Crataegus punctata — Dotted Hawthorn / Aubépine ponctuée (Tree, blooms May, Jun)
Crataegus scabrida — Hawthorn / Aubépine scabre (Shrub, blooms May, Jun)
Crataegus submollis — Hairy Cockspurthorn / Aubépine submolle (Tree, blooms May, Jun; Rare in Region)
Crataegus succulenta — Link Succulent Hawthorn / Aubépine succulente (Shrub, blooms May, Jun; Rare in Region)
Dasiphora fruticosa — Shrubby Cinquefoil / Potentille arbustive (Shrub, blooms Jun, Jul, Aug, Sep)
Drymocallis arguta — Tall Cinquefoil / Potentille argutée (Herbaceous, blooms Jun, Jul; Rare in Region)
Fragaria vesca — Woodland Strawberry / Fraisier des bois (Herbaceous, blooms May, Jun)
Fragaria virginiana — Virginia Strawberry / Fraisier de Virginie (Herbaceous, blooms May)
Geum aleppicum — Yellow Avens / Benoîte d'Alep (Herbaceous, blooms Jun, Jul)
Geum canadense — White Avens / Benoîte du Canada (Herbaceous, blooms Jun, Jul)
Geum laciniatum — Rough Avens / Benoîte laciniée (Herbaceous, blooms Jun, Jul)
Geum macrophyllum — Large-leaved Avens / Benoîte à grandes feuilles (Herbaceous, blooms Jun, Jul)
Geum rivale — Water Avens / Benoîte des ruisseaux (Herbaceous, blooms May, Jun)
Physocarpus opulifolius — Common Ninebark / Physocarpe à feuilles d'obier (Shrub, blooms Jun, Jul)
Potentilla canadensis — Dwarf Cinquefoil / Potentille du Canada (Herbaceous, blooms May, Jun; Unconfirmed/Old Record)
Potentilla norvegica — Rough Cinquefoil / Potentille de Norvège (Herbaceous, blooms Jun, Jul, Aug)
Potentilla simplex — Common Cinquefoil / Potentille simple (Herbaceous, blooms May, Jun)
Prunus americana — American Plum / Prunier d'Amérique (Tree, blooms May)
Prunus nigra — Canada Plum / Prunier noir (Tree, blooms May)
Prunus pensylvanica — Fire Cherry / Cerisier de Pennsylvanie (Tree, blooms May)
Prunus pumila — Sand Cherry / Cerisier de sable (Shrub, blooms May; Rare in Region)
Prunus serotina — Black Cherry / Cerisier tardif (Tree, blooms May, Jun)
Prunus susquehanae — Susquehana Sandcherry / Cerisier de Susquehanna (Shrub, blooms May; Rare in Region)
Prunus virginiana — Chokecherry / Cerisier de Virginie (Tree, blooms May, Jun)
Rosa acicularis — Prickly Wild Rose / Rosier aciculaire (Shrub, blooms Jun, Jul)
Rosa arkansana var. suffulta — Prairie Rose / Rosier des prairies (Shrub, blooms Jun, Jul; Unconfirmed/Old Record)
Rosa blanda — Smooth Rose / Rosier inerme (Shrub, blooms Jun, Jul)
Rosa palustris — Swamp Rose / Rosier des marais (Shrub, blooms Jun, Jul)
Rubus X jacens — Peaty Dewberry / Ronce adjacente (Shrub, blooms Jun; Rare in Region)
Rubus allegheniensis — Allegheny Blackberry / Ronce des Alléghanys (Shrub, blooms Jun, Jul)
Rubus canadensis — Smooth Blackberry / Ronce du Canada (Shrub, blooms Jun, Jul)
Rubus flagellaris — Northern Dewberry / Ronce flagellaire (Shrub, blooms May, Jun; Rare in Region)
Rubus hispidus — Swamp Dewberry / Ronce hispide (Shrub, blooms Jun, Jul)
Rubus idaeus — Red Raspberry / Framboisier (Shrub, blooms Jun, Jul)
Rubus occidentalis — Black Raspberry / Ronce de l'Ouest (Shrub, blooms Jun, Jul)
Rubus odoratus — Purple-flowered Raspberry / Ronce odorante (Shrub, blooms Jun, Jul, Aug)
Rubus pensilvanicus — Pensylvania Black Berry / Ronce de Pennsylvanie (Shrub, blooms Jun; Rare in Region)
Rubus pubescens — Dwarf Raspberry / Ronce pubescente (Shrub, blooms May, Jun)
Rubus repens — Dewdrop / Dalibarde rampante (Herbaceous, blooms Jun, Jul; Rare in Region)
Rubus setosus — Bristly Blackberry / Ronce soyeuse (Shrub, blooms Jun)
Sibbaldiopsis tridentata — Three-toothed Cinquefoil / Sibbaldiopsie tridentée (Shrub, blooms Jun, Jul; Rare in Region)
Sorbus americana — American Mountain Ash / Sorbier d'Amérique (Tree, blooms May, Jun)
Sorbus decora — Northern Mountain-ash / Sorbier décoratif (Tree, blooms May, Jun; Rare in Region)
Spiraea alba — White Meadowsweet / Spirée blanche (Shrub, blooms Jun, Jul, Aug)
Spiraea tomentosa — Steeplebush / Spirée tomenteuse (Shrub, blooms Jul, Aug)
Waldsteinia fragarioides — Appalachian Barren-Strawberry / Waldstéinie faux-fraisier (Herbaceous, blooms May, Jun)

Rubiaceae

Cephalanthus occidentalis — Buttonbush / Céphalante occidental (Shrub, blooms Jul, Aug)
Galium aparine — Cleavers / Gaillet gratteron (Herbaceous, blooms May, Jun)
Galium asprellum — Rough Bedstraw / Gaillet âpre (Herbaceous, blooms Jun, Jul)
Galium boreale — Northern Bedstraw / Gaillet boréal (Herbaceous, blooms Jun, Jul; Rare in Region)
Galium brevipes — limestone swamp bedstraw / Gaillet à court pédicelle (Herbaceous, blooms Jun, Jul; Rare in Region)
Galium circaezans — Licorice Bedstraw / Gaillet circaean (Herbaceous, blooms Jun, Jul; Rare in Region)
Galium labradoricum — Bog Bedstraw / Gaillet du Labrador (Herbaceous, blooms Jun, Jul; Rare in Region)
Galium lanceolatum — Torrey's Wild Licorice / Gaillet lancéolé (Herbaceous, blooms Jun, Jul)
Galium obtusum — Shore Bedstraw / Gaillet obtus (Herbaceous, blooms Jun, Jul; Rare in Region)
Galium palustre — Common Marsh-Bedstraw / Gaillet des marais (Herbaceous, blooms Jun, Jul)
Galium tinctorium — Dyer's Bedstraw / Gaillet teinturier (Herbaceous, blooms Jun, Jul)
Galium trifidum — Three-petal Bedstraw / Gaillet trèfle (Herbaceous, blooms Jun, Jul)
Galium triflorum — Fragrant Bedstraw / Gaillet à trois fleurs (Herbaceous, blooms Jun, Jul)
Houstonia caerulea — Bluets / Houstonie bleue (Herbaceous, blooms May, Jun; Outside of Ottawa Valley)
Mitchella repens — Partridgeberry / Mitchelle rampante (Shrub, blooms Jun, Jul)

Rutaceae

Ptelea trifoliata — Common Hoptree / Ptéléa trifolié (Tree, blooms Jun; Naturalized in Region)
Zanthoxylum americanum — Northern Prickly Ash / Clavalier d'Amérique (Shrub, blooms Apr, May)

Salicaceae

Populus balsamifera — Balsam Poplar / Peuplier baumier (Tree)
Populus deltoides — Eastern Cottonwood / Peuplier deltoïde (Tree)
Populus grandidentata — Bigtooth Aspen / Peuplier à grandes dents (Tree)
Populus tremuloides — Quaking Aspen / Peuplier faux-tremble (Tree)
Populus ×jackii — Jack's Poplar / Peuplier de Jack (Shrub, blooms Apr, May)
Salix amygdaloides — Peachleaf Willow / Saule à feuilles d'amandier (Tree; Rare in Region)
Salix bebbiana — Bebb's Willow / Saule de Bebb (Shrub)
Salix candida — Sage-leaf Willow / Saule blanc (Shrub)
Salix cordata — Sand Dune Willow / Saule cordé (Shrub)
Salix discolor — Pussy Willow / Saule discolore (Shrub)
Salix eriocephala — Heart-leaved Willow / Saule à tête laineuse (Shrub)
Salix humilis — Prairie Willow / Saule humble (Shrub)
Salix interior — Interior Sandbar Willow / Saule de l'intérieur (Shrub)
Salix lucida — Shining Willow / Saule luisant (Shrub)
Salix nigra — Black Willow / Saule noir (Tree)
Salix pedicellaris — Pursh Bog Willow / Saule pédicellé (Shrub, blooms May; Rare in Region)
Salix petiolaris — Meadow Willow / Saule à long pétiole (Shrub)
Salix pyrifolia — Balsam Willow / Saule à feuilles de poirier (Shrub; Rare in Region)
Salix serissima — Autumn Willow / Saule tardif (Shrub; Rare in Region)

Salviniaceae

Azolla caroliniana — Mosquito Fern / Azolle de la Caroline (Aquatic; Rare in Region)

Santalaceae

Arceuthobium pusillum — Peck Dwarf Mistletoe / Arceuthobe nain (Herbaceous, blooms May)
Comandra umbellata — Bastard Toadflax / Comandra ombellée (Herbaceous)

Sapindaceae

Acer negundo — Box Elder / Érable à Giguère (Tree; Naturalized in Region)
Acer nigrum — Black Maple / Érable noir (Tree; Rare in Region)
Acer pensylvanicum — Striped Maple / Érable de Pennsylvanie (Tree)
Acer rubrum — Red Maple / Érable rouge (Tree)
Acer saccharinum — Silver Maple / Érable argenté (Tree)
Acer saccharum — Sugar Maple / Érable à sucre (Tree)
Acer spicatum — Mountain Maple / Érable à épis (Shrub)
Acer × freemanii — Freeman's Maple / Érable de Freeman (Tree)
Aesculus glabra — Ohio Buckeye / Marronnier glabre (Tree)

Sarraceniaceae

Sarracenia purpurea — Purple Pitcher Plant / Sarracénie pourpre (Herbaceous, blooms May, Jun)

Saururaceae

Saururus cernuus — Lizard's Tail / Saurure penché (Herbaceous; Rare in Region)

Saxifragaceae

Chrysosplenium americanum — American Golden Saxifrage / Chrysosplénie d'Amérique (Herbaceous, blooms Apr, May)
Micranthes virginiensis — Virginia Saxifrage / Saxifrage de Virginie (Herbaceous, blooms Apr, May)
Mitella diphylla — Twoleaf Miterwort / Mitelle diphylle (Herbaceous, blooms May, Jun)
Mitella nuda — Naked Bishop's Cap / Mitelle nue (Herbaceous, blooms May, Jun)
Tiarella stolonifera — Creeping Foamflower / Tiarelle stolonifère (Herbaceous, blooms May, Jun)

Scheuchzeriaceae

Scheuchzeria palustris — Rannoch-Rush / Scheuchzérie des marais (Herbaceous)

Scrophulariaceae

Scrophularia lanceolata — Lanceleaf Figwort / Scrofulaire lancéolée (Herbaceous; Rare in Region)

Selaginellaceae

Selaginella eclipes — Hidden Spikemoss / Sélaginelle éclipsée (Herbaceous; Rare in Region)
Selaginella rupestris — Rock Spikemoss / Sélaginelle des rochers (Herbaceous; Rare in Region)

Smilacaceae

Smilax herbacea — Smooth Carrionflower / Smilax herbacé (Vine, blooms May, Jun)
Smilax tamnoides — Bristly Greenbrier / Smilax tamniforme (Vine, blooms May, Jun)

Solanaceae

Leucophysalis grandiflora — Large-flowered Ground-Cherry / Coquerel à grandes fleurs (Herbaceous, blooms Jun, Jul, Aug; Rare in Region)
Physalis heterophylla — Clammy Groundcherry / Coquerel hétérophylle (Herbaceous, blooms Jun, Jul, Aug)
Solanum emulans — Eastern Black Nightshade / Morelle émule (Herbaceous, blooms Jun, Jul, Aug)

Staphyleaceae

Staphylea trifolia — American Bladdernut / Staphylier à trois feuilles (Shrub, blooms May, Jun; Rare in Region)

Taxaceae

Taxus canadensis — Canada Yew / If du Canada (Shrub)

Thelypteridaceae

Amauropelta noveboracensis — New York Fern / Thélyptère de New York (Fern)
Phegopteris connectilis — Long Beech Fern / Phégoptère du hêtre (Fern)
Thelypteris palustris — Marsh Fern / Thélyptère des marais (Fern)

Thymelaeaceae

Dirca palustris — Eastern Leatherwood / Dirca des marais (Shrub)

Typhaceae

Sparganium americanum — American Bur-Reed / Rubanier d'Amérique (Aquatic; Rare in Region)
Sparganium androcladum — Branching Bur-Reed / Rubanier à rameaux dressés (Aquatic; Rare in Region)
Sparganium emersum — Unbranched Bur-Reed / Rubanier émergent (Aquatic)
Sparganium eurycarpum — Big Bur-Reed / Rubanier à grands fruits (Aquatic; Rare in Region)
Sparganium fluctuans — Floating Bur-Reed / Rubanier flottant (Aquatic; Rare in Region)
Sparganium natans — Small Bur-reed / Rubanier nageant (Aquatic, blooms Jun, Jul; Rare in Region)
Typha latifolia — Broadleaf Cattail / Quenouille à larges feuilles (Herbaceous, blooms Jun, Jul)
Typha ×glauca — Cat-tail / Quenouille hybride (Aquatic, blooms Jun, Jul)

Ulmaceae

Ulmus americana — American Elm / Orme d'Amérique (Tree)
Ulmus rubra — Slippery Elm / Orme rouge (Tree)
Ulmus thomasii — Rock Elm / Orme liège (Tree; Rare in Region)

Urticaceae

Boehmeria cylindrica — False Nettle / Fausse-ortie cylindrique (Herbaceous)
Laportea canadensis — Wood Nettle / Ortie du Canada (Herbaceous)
Pilea fontana — Springs Clearweed / Pilea des fontaines (Herbaceous; Rare in Region)
Pilea pumila — Canada Clearweed / Pilea nain (Herbaceous)
Urtica gracilis — Slender Stinging Nettle / Ortie gracile (Herbaceous)

Verbenaceae

Verbena bracteata — Bigbract Verbena / Verveine à bractées (Herbaceous, blooms Jun, Jul, Aug, Sep; Naturalized in Region)
Verbena hastata — Blue Vervain / Verveine hastée (Herbaceous, blooms Jul, Aug)
Verbena simplex — Narrowleaf Vervain / Verveine simple (Herbaceous, blooms Jun, Jul, Aug; Rare in Region)
Verbena stricta — Hoary Vervain / Verveine dressée (Herbaceous, blooms Jun, Jul, Aug; Rare in Region)
Verbena urticifolia — White Vervain / Verveine à feuilles d'ortie (Herbaceous, blooms Jul, Aug)

Violaceae

Viola adunca — Hookedspur Violet / Violette à éperon crochu (Herbaceous, blooms May, Jun)
Viola blanda — Sweet White Violet / Violette blandissante (Herbaceous, blooms May)
Viola canadensis — Canada Violet / Violette du Canada (Herbaceous, blooms May, Jun)
Viola communis — Dooryard Violet / Violette commune (Herbaceous, blooms Apr, May)
Viola cucullata — Marsh Blue Violet / Violette cucullée (Herbaceous, blooms May, Jun)
Viola egglestonii — Glade Violet / Violette d'Eggleston (Herbaceous, blooms Apr, May; Rare in Region)
Viola eriocarpa — Smooth Yellow Violet / Violette à fruits velus (Herbaceous, blooms May, Jun)
Viola fimbriatula — Downy Blue Violet / Violette fimbriolée (Herbaceous, blooms May; Rare in Region)
Viola incognita — Largeleaf White Violet / Violette méconnue (Herbaceous, blooms May)
Viola labradorica — Labrador Violet / Violette du Labrador (Herbaceous, blooms May, Jun)
Viola lanceolata — White Bog Violet / Violette lancéolée (Herbaceous, blooms May, Jun; Rare in Region)
Viola minuscula — Northern White Violet / Violette minuscule (Herbaceous, blooms Apr, May)
Viola nephrophylla — Greene Northern Bog Violet / Violette néphrophylle (Herbaceous, blooms Apr, May)
Viola pubescens — Downy Yellow Violet / Violette pubescente (Herbaceous, blooms May)
Viola renifolia — Kidneyleaf White Violet / Violette réniforme (Herbaceous, blooms May, Jun; Rare in Region)
Viola rostrata — Long-spurred Violet / Violette à éperon allongé (Herbaceous, blooms May, Jun; Rare in Region)
Viola sagittata — Northern Downy Violet / Violette sagittée (Herbaceous, blooms Apr, May; Rare in Region)
Viola selkirkii — Great-spurred Violet / Violette de Selkirk (Herbaceous, blooms May)
Viola septentrionalis — Northern Woodland Violet / Violette septentrionalis (Herbaceous, blooms May, Jun)
Viola sororia — Common Blue Violet / Violette parente (Herbaceous, blooms Apr, May)
Viola ×sublanceolata — Lanceolate Violet (Herbaceous, blooms May)

Vitaceae

Parthenocissus inserta — Thicket Creeper / Vigne vierge commune (Vine)
Parthenocissus quinquefolia — Virginia Creeper / Vigne vierge à cinq folioles (Vine)
Vitis riparia — Riverbank Grape / Vigne des rivages (Vine)

Woodsiaceae

Gymnocarpium dryopteris — Northern Oak Fern / Gymnocarpe du chêne (Fern)
Gymnocarpium robertianum — Limestone Oak Fern / Gymnocarpe de Robert (Fern; Rare in Region)
Woodsia ilvensis — Rusty Woodsia / Woodsie de l'Elbe (Fern; Rare in Region)
Woodsia obtusa — Blunt Woodsia / Woodsie obtuse (Fern; Rare in Region)
Woodsia oregana — Cathcart's Woodsia / Woodsie de l'Oregon (Fern; Rare in Region)

Zannichelliaceae

Zannichellia palustris — Horned Pondweed / Zannichellie des marais (Aquatic, blooms Jun, Jul; Rare in Region)

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Ottawa Valley Native Plant Directory

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