Below is a list of Canadian plants by genus. Due to the vastness of Canada's biodiversity, this page is divided.

Many of the plants seen in Canada are introduced, either intentionally or accidentally. N indicated native and X indicated exotic. Those plants whose status is unknown are marked with a ?.

A | B | C | D | E | F | G | H | I J K | L | M | N | O | P Q | R | S | T | U V W | X Y Z

Ba

• Ballota
  • X Ballota nigra
• Baptisia
  • X Baptisia australis
  • N Baptisia tinctoria — yellow wild-indigo
• Barbarea
  • N Barbarea orthoceras — erect-fruit wintercress
  • X Barbarea vulgaris — yellow rocket, common wintercress
• Bartonia
  • N Bartonia paniculata subsp. paniculata — twining screwstem, branched bartonia Threatened
  • N Bartonia virginica — yellow screwstem, yellow bartonia
• Bartsia
  • N Bartsia alpina — velvetbells, alpine bartsia
• Bassia
  • X Bassia hyssopifolia

Be

• Beckmannia
  • N Beckmannia syzigachne — American slough grass
• Bellis
  • X Bellis perennis — English daisy
• Berberis
  • X Berberis aquifolium — Oregon grape, Oregon hollygrape, holly barberry
  • X Berberis repens
  • X Berberis thunbergii — Japanese barberry, purple Japanese barberry
  • X Berberis vulgaris — European barberry, common barberry
  • X Berberis × ottawensis (B. thunbergii × B. vulgaris) — Ottawa barberry
• Berteroa
  • X Berteroa incana — hoary alyssum, hoary false madwort
• Berula
  • N Berula erecta
• Betula
  • N Betula alleghaniensis — yellow birch
  • N Betula cordifolia — heartleaf birch, mountain white birch, mountain paper birch
  • N Betula glandulosa — American dwarf birch, glandular birch, scrub birch, dwarf resin birch, resin birch, tundra dwarf birch
  • N Betula lenta — sweet birch, cherry birch
  • N Betula minor — dwarf white birch
  • N Betula neoalaskana — Alaska birch, Alaskan paper birch, Alaska white birch
  • N Betula occidentalis — water birch, western birch, western river birch, spring birch
  • N Betula papyrifera — paper birch, white birch, canoe birch
  • X Betula pendula — European white birch, weeping birch, silver birch
  • N Betula populifolia — grey birch, fire birch, old field birch, poverty birch
  • X Betula pubescens — downy birch, European white birch
  • N Betula pumila — dwarf birch, bog birch, swamp birch
  • N Betula × neoborealis (B. occidentalis × B. pumila)
  • N Betula × purpusii (B. alleghaniensis × B. pumila)
  • N Betula × sandbergii (B. papyrifera × B. pumila) — Sandberg's birch
  • N Betula × sargentii (B. glandulosa × B. pumila) — Sargent's birch

Bi

• Bidens
  • X Bidens aristosa — tickseed beggarticks
  • X Bidens bipinnata
  • N Bidens cernua — nodding beggarticks, nodding burr marigold
  • N Bidens connata — purplestem beggarticks, purplestem swamp beggarticks, connate beggarticks, southern tickseed
  • N Bidens discoidea — swamp beggarticks, small beggarticks, discoid beggarticks, few-bracted beggarticks
  • N Bidens frondosa — Devil's beggarticks, Devil's pitchfork, stick-tight, largeleaf beggarticks
  • N Bidens hyperborea — estuary beggarticks, coastal beggarticks, northern estuarine beggarticks, seacliff beggarticks
  • N Bidens laevis — smooth bur-marigold
  • X Bidens pilosa — hairy beggarticks
  • X Bidens polylepis — awnless beggarticks
  • N Bidens tripartita — threepart beggarticks, trifid burr-marigold
  • N Bidens vulgata — tall beggarticks, stick-tight, big Devil's beggarticks

Bl

• Blephilia
  • N Blephilia ciliata — downy woodmint
  • N Blephilia hirsuta — hairy woodmint
• Blysmus
  • N Blysmus rufus — red bulrush

Bo

• Boehmeria
  • N Boehmeria cylindrica — false nettle, bog-hemp, smallspike false nettle
• Bolboschoenus
  • N Bolboschoenus fluviatilis — river bulrush, river clubrush
  • N Bolboschoenus maritimus — saltmarsh bulrush, bayonet grass, saltmarsh clubrush
• Borago
  • X Borago officinalis — common borage, beeplant, beebread
• Botrychium
  • N Botrychium acuminatum — pointed moonwort
  • N Botrychium ascendens — upswept moonwort, triangle-lobed moonwort
  • N Botrychium campestre — prairie moonwort, prairie dunewort
  • N Botrychium dissectum — lacyleaf grapefern, cutleaf grapefern, cutleaf moonwort
  • N Botrychium hesperium — western moonwort
  • N Botrychium lanceolatum — lanceleaf grapefern, triangle moonwort
  • N Botrychium lunaria — common moonwort, moonwort grapefern
  • N Botrychium matricariifolium — daisyleaf moonwort, matricary grapefern, matricary moonwort, chamomile grapefern
  • N Botrychium minganense — Mingan's moonwort
  • N Botrychium multifidum — leathery grapefern
  • N Botrychium oneidense — Lake Oneida grapefern, blunt-lobed grapefern
  • N Botrychium pallidum — pale moonwort
  • N Botrychium pseudopinnatum — false northwestern moonwort
  • N Botrychium rugulosum — St. Lawrence grapefern, rugulose grapefern, ternate grapefern
  • N Botrychium simplex — little grapefern, least moonwort
  • N Botrychium spathulatum — spatulate moonwort, spoonleaf moonwort
  • N Botrychium virginianum — rattlesnake fern
• Bouteloua
  • N Bouteloua curtipendula — sideoats grama

Br

• Brachyelytrum
  • N Brachyelytrum erectum var. erectum — bearded shorthusk
  • N Brachyelytrum erectum var. glabratum — northern shorthusk
• Brasenia
  • N Brasenia schreberi — watershield, purple wendock
• Brassica
  • X Brassica juncea — Chinese mustard, Indian mustard, brown mustard, leaf mustard, Sarepta mustard
  • X Brassica napus — rutabaga, canola, Swedish turnip, rapeseed, colza, oilseed rape, annual rape
  • X Brassica nigra — black mustard
  • X Brassica oleracea — cabbage, cauliflower, broccoli, kale, brussels sprouts, kohlrabi, chou broccoli
• Braya
  • N Braya humilis — low northern rockcress, low braya
• Briza
  • X Briza maxima — big quaking grass, large quaking grass
  • X Briza media — perennial quaking grass
• Bromus
  • X Bromus aleutensis — Aleut brome
  • X Bromus arvensis — field brome
  • X Bromus briziformis — rattlesnake brome
  • X Bromus carinatus — California brome
  • N Bromus ciliatus — fringed brome
  • X Bromus commutatus — meadow brome, hairy brome
  • X Bromus danthoniae — oat brome
  • X Bromus erectus — erect brome, upright brome, meadow brome
  • X Bromus hordeaceus — soft brome
  • X Bromus inermis subsp. inermis — smooth brome, Hungarian brome, awnless brome
  • N Bromus kalmii — Kalm's brome, prairie brome, wild chess
  • N Bromus latiglumis — broad-glumed brome
  • N Bromus nottowayanus — Nottoway brome grass
  • N Bromus pubescens — hairy woodland brome
  • N Bromus pumpellianus subsp. pumpellianus — Pumpell's brome
  • X Bromus racemosus — spiked brome
  • X Bromus secalinus — rye brome, cheat, chess
  • X Bromus squarrosus — corn brome
  • X Bromus sterilis — poverty brome
  • X Bromus tectorum — cheat grass
  • X Bromus × pseudothominii (B. hordeaceus × B. lepidus) — soft brome

Bu

• Buchnera
  • N Buchnera americana — bluehearts Endangered
• Buddleja
  • X Buddleja davidii — butterfly bush, orange-eye, summer lilac
• Buglossoides
  • X Buglossoides arvensis — corn gromwell, bastard alkanet
• Bulbostylis
  • N Bulbostylis capillaris
• Bupleurum
  • X Bupleurum rotundifolium — roundleaf thorowax
• Butomus
  • X Butomus umbellatus — flowering rush

References

See: Flora of Canada#References