List of Canadian plants by genus

• Abies
  • N Abies amabilis – Pacific silver fir, amabilis fir
  • N Abies balsamea – balsam fir
  • N Abies grandis – grand fir
  • N Abies lasiocarpa – subalpine fir
• Abutilon
  • X Abutilon theophrasti – velvetleaf, butterprint, Indian mallow

• Acalypha
  • N Acalypha virginica – Virginia copperleaf, Virginia threeseed mercury
• Acanthospermum
  • X Acanthospermum hispidum – hispid greenstripe
• Acer
  • X Acer campestre – hedge maple, field maple
  • X Acer ginnala – Amur maple, ginnala maple
  • N Acer negundo – Manitoba maple, box-elder, ashleaf maple
  • N Acer nigrum – black maple, black sugar maple, rock maple
  • N Acer pensylvanicum – striped maple, moose maple, goosefoot maple
  • X Acer platanoides – Norway maple, Schwedler maple, crimson king maple
  • X Acer pseudoplatanus – sycamore maple, Scottish maple, great maple
  • N Acer rubrum – red maple, swamp maple, scarlet maple
  • N Acer saccharinum – silver maple, soft maple, white maple, silverleaf maple, river maple
  • N Acer saccharum – sugar maple, hard maple
  • N Acer spicatum – mountain maple
  • N Acer × freemanii (A. rubrum × A. saccharinum) – Freeman's maple
• Achillea
  • X Achillea filipendulina – fernleaf yarrow
  • N Achillea millefolium subsp. borealis – northern yarrow
  • N Achillea millefolium subsp. lanulosa – woolly yarrow
  • X Achillea millefolium subsp. millefolium – common yarrow, milfoil
  • X Achillea ptarmica – false sneezewort, white tansy, sneezewort yarrow, pearl yarrow
  • N Achillea sibirica – Siberian yarrow, many-flowered yarrow
• Acinos
  • X Acinos arvensis – mother-of-thyme, spring savoury, basil thyme
• Aconitum
  • X Aconitum napellus – garden monk's-hood, helmet flower, Venus' chariot, aconite
  • X Aconitum variegatum – Manchurian monk's-hood
  • X Aconitum × bicolor (A. napellus × A. variegatum) – hybrid monk's-hood, two-coloured wolf's-bane
• Acorus
  • N Acorus americanus – sweetflag
  • X Acorus calamus – European sweetflag
• Acroptilon
  • X Acroptilon repens – Russian knapweed
• Actaea
  • N Actaea pachypoda – white baneberry, doll's-eyes
  • N Actaea rubra – red baneberry
  • N Actaea × ludovici (A. pachypoda × A. rubra) – hybrid baneberry

• Adenocaulon
  • N Adenocaulon bicolor – trail-plant
• Adiantum
  • N Adiantum aleuticum – western maidenhair fern
  • N Adiantum capillus-veneris – southern maidenhair fern
  • N Adiantum pedatum – northern maidenhair fern, five-finger fern
  • N Adiantum viridimontanum – Green Mountain maidenhair fern
• Adlumia
  • N Adlumia fungosa – Allegheny vine, climbing fumitory
• Adonis
  • X Adonis annua – pheasant's-eye
• Adoxa
  • N Adoxa moschatellina – moschatel, muskroot, townhall clock

• Aegopodium
  • X Aegopodium podagraria – goutweed, snow-on-the-mountain, goat's-foot, ground elder, bishop's weed
• Aesculus
  • N Aesculus glabra – Ohio buckeye, fœtid buckeye
  • X Aesculus hippocastanum – common horsechestnut
• Aethusa
  • X Aethusa cynapium – fool's-parsley

• Agalinis
  • N Agalinis gattingeri – Gattinger's agalinis Endangered
  • N Agalinis paupercula – small-flowered purple false-foxglove, small-flowered agalinis
  • N Agalinis purpurea – purple false foxglove, large purple agalinis
  • N Agalinis skinneriana – Skinner's agalinis Endangered
  • N Agalinis tenuifolia – slenderleaf purple false foxglove, slenderleaf agalinis
• Agastache
  • N Agastache foeniculum – anise hyssop, blue giant hyssop
  • N Agastache nepetoides – yellow giant hyssop
  • N Agastache scrophulariifolia – purple giant hyssop
• Agoseris
  • N Agoseris glauca – pale false-dandelion, prairie agoseris, pale agoseris, pale goat-chicory, large-flowered false-dandelion
• Agrimonia
  • X Agrimonia eupatoria – medicinal agrimony, church steeples, European groovebur
  • N Agrimonia gryposepala – tall hairy agrimony, tall hairy groovebur
  • N Agrimonia parviflora – smallflower groovebur, harvestlice agrimony
  • N Agrimonia pubescens – soft groovebur, soft agrimony
  • N Agrimonia striata – woodland agrimony, grooved agrimony
• Agropyron
  • X Agropyron cristatum – crested wheatgrass
• Agrostemma
  • X Agrostemma githago – common corncockle
• Agrostis
  • ? Agrostis canina – brown bentgrass
  • X Agrostis capillaris – colonial bentgrass, browntop, Prince Edward Island bentgrass, Rhode Island bentgrass
  • X Agrostis gigantea – black bentgrass, redtop
  • N Agrostis hyemalis – winter bentgrass, ticklegrass
  • N Agrostis mertensii – northern bentgrass
  • N Agrostis perennans – upland bentgrass, perennial bentgrass
  • N Agrostis scabra – rough bentgrass, tickle grass, rough hairgrass, twin bentgrass
  • N Agrostis stolonifera – creeping bentgrass, spreading bentgrass

• Ailanthus
  • X Ailanthus altissima – tree-of-Heaven, Chinese sumac, stinktree, varnish tree

• Ajuga
  • X Ajuga genevensis – Geneva bugleweed
  • X Ajuga reptans – carpet bugleweed, common bugle, creeping bugleweed

• Alcea
  • X Alcea pallida – pale hollyhock
  • X Alcea rosea – hollyhock
• Alchemilla
  • X Alchemilla filicaulis – thin-stemmed lady's-mantle
  • X Alchemilla monticola – hairy lady's-mantle
• Aletris
  • N Aletris farinosa – colicroot Threatened
• Alisma
  • N Alisma gramineum – grass-leaved water-plantain
  • N Alisma subcordatum – southern water-plantain
  • N Alisma triviale – northern water-plantain
• Alliaria
  • X Alliaria petiolata – garlic mustard, hedge garlic
• Allium
  • N Allium burdickii – narrow-leaved wild leek
  • N Allium canadense – Canada wild onion, meadow garlic, meadow onion
  • N Allium cernuum – nodding onion
  • X Allium oleraceum – wild garlic
  • X Allium sativum – garlic
  • X Allium schoenoprasum var. schoenoprasum – chives
  • N Allium schoenoprasum var. sibiricum – Siberian chives
  • N Allium stellatum – prairie onion, wild onion
  • N Allium tricoccum – wild leek, small wild leek, ramps
  • X Allium vineale – field garlic
• Alnus
  • X Alnus glutinosa – black alder, European alder
  • N Alnus incana – grey alder, white alder, hoary alder, speckled alder
  • N Alnus viridis – green alder, mountain alder, American green alder, Siberian alder, Sitka alder
• Alopecurus
  • N Alopecurus aequalis – shortawn foxtail
  • N Alopecurus alpinus – alpine foxtail
  • X Alopecurus geniculatus – water foxtail
  • X Alopecurus pratensis – meadow foxtail
• Althaea
  • X Althaea hirsuta – hairy marsh-mallow
  • X Althaea officinalis – common marsh-mallow
• Alyssum
  • X Alyssum alyssoides – pale alyssum, small alyssum, yellow alyssum, pale madwort
  • X Alyssum murale – yellow-tuft

• Amaranthus
  • X Amaranthus albus – white tumbleweed, tumble pigweed, tumbleweed amaranth
  • X Amaranthus blitoides – prostrate amaranth, prostrate pigweed, matweed
  • X Amaranthus blitum – purple amaranth
  • X Amaranthus cruentus – blood amaranth, purple amaranth, red amaranth, caterpillar amaranth, African spinach
  • X Amaranthus hybridus – smooth amaranth, hybrid amaranth, green pigweed, smooth pigweed, green amaranth
  • X Amaranthus palmeri – Palmer's amaranth
  • X Amaranthus powellii – green amaranth, Powell's smooth amaranth
  • X Amaranthus retroflexus – redroot amaranth, redroot pigweed, wild-beet amaranth, rough pigweed
  • X Amaranthus spinosus – spiny amaranth
  • N Amaranthus tuberculatus – roughfruit amaranth, roughfruit waterhemp, tall waterhemp, tall pigweed
• Ambrosia
  • N Ambrosia artemisiifolia – common ragweed, annual ragweed, annual bur-sage
  • N Ambrosia psilostachya – perennial ragweed, western ragweed, naked-spike ambrosia, Cuman ragweed
  • N Ambrosia trifida – giant ragweed, great ragweed, buffalo-weed, skeleton-leaf bur-sage
• Amelanchier
  • N Amelanchier alnifolia – Saskatoonberry, northwestern serviceberry
  • N Amelanchier arborea – downy serviceberry, downy juneberry, common serviceberry
  • N Amelanchier bartramiana – mountain juneberry, Bartram's shadbush, Bartram's chuckleypear
  • N Amelanchier canadensis – Canada serviceberry, swamp shadbush, thicket serviceberry
  • N Amelanchier humilis – low serviceberry, running serviceberry
  • N Amelanchier laevis – smooth juneberry, Allegheny serviceberry, smooth chuckleypear
  • N Amelanchier sanguinea var. gaspensis – Gaspé roundleaf juneberry
  • N Amelanchier sanguinea var. sanguinea – roundleaf juneberry, roundleaf serviceberry, Fernald's chuckleypear
  • N Amelanchier stolonifera – running serviceberry, running juneberry, running chuckleypear
  • N Amelanchier × intermedia (A. arborea × A. canadensis) – swamp sugarpear
  • N Amelanchier × neglecta (A. bartramiana × A. laevis) – hybrid juneberry
  • N Amelanchier × quinti-martii (A. arborea × A. bartramiana) – Quint-mart's serviceberry
  • N Amelanchier × wiegandii (A. arborea × A. sanguinea) – Wiegand's serviceberry
• Amerorchis
  • N Amerorchis rotundifolia – small roundleaf orchis, oneleaf orchid
• Ammannia
  • N Ammannia robusta – scarlet ammannia Endangered
• Ammophila
  • N Ammophila breviligulata – American beachgrass
• Amorpha
  • N Amorpha canescens – leadplant, downy indigobush
  • N Amorpha fruticosa – false indigo
• Amphicarpaea
  • N Amphicarpaea bracteata – American hog-peanut

• Anagallis
  • X Anagallis arvensis – scarlet pimpernel
• Anaphalis
  • N Anaphalis margaritacea – pearly everlasting
• Anchusa
  • X Anchusa arvensis – small bugloss, annual bugloss, alkanet
  • X Anchusa officinalis – common bugloss
• Andromeda
  • N Andromeda glaucophylla – bog rosemary, rosemary-leaf marsh andromeda
  • N Andromeda polifolia var. jamesiana – James Bay bog rosemary
  • N Andromeda polifolia var. polifolia – northern bog rosemary, marsh holyrose
• Andropogon
  • N Andropogon gerardii – big bluestem, turkeyfoot
  • N Andropogon virginicus – broom-sedge
• Androsace
  • ? Androsace occidentalis – western rock-jasmine
  • N Androsace septentrionalis – pygmy-flower rock-jasmine, northern androsace
• Anemone
  • N Anemone acutiloba – sharp-lobed hepatica, sharp-lobed liverleaf
  • N Anemone americana – round-lobed hepatica, American liverleaf
  • X Anemone blanda
  • N Anemone canadensis – Canada anemone, roundleaf thimbleweed
  • N Anemone cylindrica – long-fruited anemone, thimbleweed, candle anemone, long-headed anemone
  • N Anemone multifida – cutleaf anemone, cliff anemone, early anemone
  • N Anemone parviflora – northern anemone, small-flowered anemone
  • N Anemone patens – pasqueflower, prairie smoke, prairie crocus, cutleaf anemone
  • N Anemone quinquefolia – wood anemone, snow-drops
  • N Anemone richardsonii – Richardson's anemone, yellow anemone
  • N Anemone virginiana – tall thimbleweed, riverbank anemone
• Anethum
  • X Anethum graveolens – dill, Indian dill
• Angelica
  • N Angelica atropurpurea – purplestem angelica, dark-purple alexanders, wild masterwort, great angelica
  • ? Angelica lucida – seabeach angelica, shiny angelica
  • X Angelica sylvestris
  • ? Angelica venenosa – hairy angelica
• Anoda
  • X Anoda cristata – crested anoda
• Antennaria
  • N Antennaria howellii subsp. canadensis – Canada pussytoes
  • N Antennaria howellii subsp. howellii – Howell's pussytoes
  • N Antennaria howellii subsp. neodioica – northern pussytoes, common pussytoes
  • N Antennaria howellii subsp. petaloidea – small pussytoes
  • N Antennaria microphylla – littleleaf pussytoes
  • N Antennaria neglecta – field pussytoes
  • N Antennaria oxyphylla
  • N Antennaria parlinii subsp. fallax – largeleaf pussytoes, deceitful pussytoes
  • N Antennaria parlinii subsp. parlinii – Parlin's pussytoes, smooth pussytoes, plainleaf pussytoes
  • N Antennaria parvifolia – small-leaf pussytoes, Rocky Mountain cudweed, Nuttall's pussytoes
  • N Antennaria pulcherrima – showy pussytoes, handsome pussytoes
  • N Antennaria rosea – rosy pussytoes, pink everlasting
  • N Antennaria subviscosa
• Anthemis
  • X Anthemis arvensis – corn chamomile, field chamomile
  • X Anthemis cotula – mayweed, stinking chamomile, fœtid chamomile, dog fennel, stinking mayweed
  • X Anthemis tinctoria – golden chamomile
• Anthoxanthum
  • X Anthoxanthum odoratum – sweet vernalgrass, sweetgrass
• Anthriscus
  • X Anthriscus cerefolium – common chervil
  • X Anthriscus sylvestris – wild chervil, woodland chervil, cow parsley, beak-chervil
• Anthyllis
  • X Anthyllis vulneraria – kidney vetch, lady's fingers
• Antirrhinum
  • X Antirrhinum majus – common snapdragon
  • X Antirrhinum orontium – lesser snapdragon

• Apera
  • X Apera interrupta – dense silky bentgrass, interrupted bentgrass, interrupted windgrass
  • X Apera spica-venti – silky bentgrass
• Apios
  • N Apios americana – American groundnut, Indian potato, wild bean, potato-bean
• Aplectrum
  • N Aplectrum hyemale – puttyroot
• Apocynum
  • N Apocynum androsaemifolium – spreading dogbane
  • N Apocynum cannabinum – Indian hemp, clasping-leaf dogbane, prairie dogbane, velvet dogbane, amyroot
  • N Apocynum sibiricum – clasping-leaved dogbane
  • N Apocynum × floribundum (A. androsaemifolium × A. cannabinum) – intermediate dogbane, bitter dogbane

• Aquilegia
  • N Aquilegia brevistyla – small-flowered columbine
  • N Aquilegia canadensis – Canadian columbine, red columbine
  • X Aquilegia vulgaris – European columbine, garden columbine, culverwort, capon's feather

• Arabidopsis
  • X Arabidopsis thaliana – mouse-ear cress, wall-cress
• Arabis
  • N Arabis alpina subsp. alpina – alpine rockcress
  • X Arabis alpina subsp. caucasica – wall rockcress, grey rockcress
  • N Arabis arenicola var. arenicola – arctic rockcress
  • N Arabis arenicola var. pubescens – sand rockcress
  • N Arabis canadensis – sicklepod
  • N Arabis divaricarpa – limestone rockcress
  • N Arabis drummondii – Drummond rockcress
  • N Arabis glabra – tower-mustard
  • N Arabis hirsuta var. adpressipilis – hairy rockcress, creamflower rockcress
  • N Arabis hirsuta var. pycnocarpa – creamflower rockcress
  • N Arabis holboelli var. retrofracta – Holboell's rockcress
  • N Arabis holboelli var. secunda – bristly-leaved rockcress
  • ? Arabis kamchatica – lyreleaf rockcress (species status disputed)
  • N Arabis laevigata – smooth rockcress
  • N Arabis lyrata – lyreleaf rockcress
  • N Arabis shortii – Short's rockcress
• Aralia
  • X Aralia elata – Japanese Angelica-tree, Chinese Angelica-tree
  • N Aralia hispida – bristly spikenard, bristly sarsaparilla, dwarf elder
  • N Aralia nudicaulis – wild sarsaparilla, small spikenard
  • N Aralia racemosa – American spikenard, Indian-root, life-of-man, petty morel
  • X Aralia spinosa – Hercules' club, Devil's walkingstick, prickly ash, Angelica tree, toothache tree
• Arceuthobium
  • N Arceuthobium americanum – pine mistletoe, American mistletoe, lodgepole pine dwarf mistletoe
  • N Arceuthobium pusillum – dwarf mistletoe, eastern dwarf mistletoe
• Arctagrostis
  • N Arctagrostis latifolia – polargrass
• Arctium
  • X Arctium lappa – great burdock
  • X Arctium minus subsp. minus – common burdock
  • X Arctium minus subsp. nemorosum – lesser burdock
  • X Arctium pubens – wood burdock
  • X Arctium tomentosum – woolly burdock, tomentose burdock
  • X Arctium × nothum (A. lappa × A. minus) – hybrid burdock
• Arctophila
  • N Arctophila fulva – pendant grass
• Arctostaphylos
  • N Arctostaphylos alpina – alpine bearberry
  • N Arctostaphylos rubra – red manzanita
  • N Arctostaphylos uva-ursi – bearberry, kinnikinnick, mealberry
• Arenaria
  • N Arenaria humifusa – creeping sandwort, low sandwort, spreading sandwort
  • X Arenaria serpyllifolia – thymeleaf sandwort
• Arethusa
  • N Arethusa bulbosa – dragon's mouth, swamp pink
• Argemone
  • X Argemone mexicana – Mexican prickly-poppy
• Arisaema
  • N Arisaema dracontium – green dragon Special Concern
  • N Arisaema triphyllum – Jack-in-the-pulpit
• Aristida
  • N Aristida basiramea – forktip threeawn Endangered
  • N Aristida dichotoma – Shinner's threeawn
  • N Aristida longespica var. geniculata – red threeawn
  • N Aristida longespica var. longespica – slimspike threeawn
  • X Aristida oligantha – prairie three-awn grass
  • N Aristida purpurascens – arrow feather threeawn
• Aristolochia
  • X Aristolochia clematitis – birthwort
  • X Aristolochia macrophylla – pipevine
• Armeria
  • N Armeria maritima – sea thrift, Labrador sea thrift, foxflower
• Armoracia
  • X Armoracia rusticana – horseradish, red cole
• Arnica
  • N Arnica angustifolia – narrowleaf arnica, arctic arnica, arctic leopardbane
  • N Arnica chamissonis – meadow arnica, Chamisso's arnica, leafy arnica, leafy leopardbane
  • N Arnica cordifolia – heartleaf arnica, heartleaf leopardbane
  • N Arnica lonchophylla – northern arnica, longleaf arnica, white-plumed arnica, spearleaf arnica
• Arnoglossum
  • N Arnoglossum platagineum – tuberous Indian-plantain Special Concern
• Aronia
  • N Aronia melanocarpa – black chokeberry
• Arrhenatherum
  • X Arrhenatherum elatius – tall oatgrass, French rye, tuber oatgrass, bulbous oatgrass, false oat grass
• Artemisia
  • X Artemisia abrotanum – southern wormwood, southernwood, lad's love, oldman
  • X Artemisia absinthium – common wormwood, absinthe, absinthe wormwood, European wormwood
  • X Artemisia annua – sweet sagewort, annual wormwood, sweet Annie, sweet wormwood, annual mugwort
  • X Artemisia biennis – biennial wormwood
  • N Artemisia campestris subsp. borealis – boreal wormwood, Canada wormwood
  • N Artemisia campestris subsp. caudata – tall wormwood, beach wormwood, wild wormwood, threadleaf sagewort, sagewort wormwood
  • N Artemisia dracunculus – wild tarragon, dragon wormwood, dragon sagewort, false tarragon, French tarragon, Russian tarragon
  • N Artemisia frigida – fringed sagebrush, prairie sagebrush, fringed sagewort, prairie sagewort, wormwood sage, pasture sage, arctic sagebrush
  • N Artemisia ludoviciana – white sage, silver wormwood, prairie sage, western mugwort, darkleaf mugwort, cudweed sagewort, pasture sage, Louisiana wormwood, Louisiana sage, silver king artemisia, white wormwood, white sagebrush
  • X Artemisia pontica – Roman wormwood, petite wormwood, green ginger
  • X Artemisia stelleriana – hoary sagebrush, dusty miller, beach wormwood, old woman
  • N Artemisia tilesii – Tilesius' wormood, mountain sagewort, oldwoman
  • X Artemisia vulgaris – common mugwort, common wormwood
• Aruncus
  • X Aruncus dioicus – common goat's-beard

• Asarum
  • N Asarum canadense – Canada wild ginger
• Asclepias
  • N Asclepias exaltata – poke milkweed, tall milkweed, four-leaved milkweed
  • N Asclepias hirtella – tall green milkweed
  • N Asclepias incarnata – swamp milkweed
  • N Asclepias ovalifolia – oval-leaf milkweed, dwarf milkweed
  • N Asclepias purpurascens – purple milkweed
  • N Asclepias quadrifolia – four-leaved milkweed
  • N Asclepias sullivantii – Sullivant's milkweed
  • N Asclepias syriaca – common milkweed, silkweed, silky swallow-wort
  • N Asclepias tuberosa – butterfly weed, orange milkweed, pleurisy root, chigger flower
  • ? Asclepias variegata – white milkweed
  • N Asclepias verticillata – whorled milkweed
  • N Asclepias viridiflora – green milkweed, green comet milkweed, short green milkweed
• Asimina
  • N Asimina triloba – common pawpaw
• Asparagus
  • X Asparagus officinalis – garden asparagus, asparagus-fern
• Asperugo
  • X Asperugo procumbens – German madwort, catchweed
• Asperula
  • X Asperula arvensis – blue woodruff
• Asplenium
  • N Asplenium platyneuron – ebony spleenwort
  • N Asplenium rhizophyllum – walking fern
  • N Asplenium ruta-muraria – wall-rue
  • N Asplenium scolopendrium var. americanum – American Hart's-tongue fern Special Concern
  • N Asplenium trichomanes – maidenhair spleenwort
  • N Asplenium viride – green spleenwort
• Aster
  • N Aster alpinus – alpine aster
• Astragalus
  • N Astragalus adsurgens – ascending milkvetch, rattle milkvetch, standing milkvetch
  • N Astragalus agrestis – field milkvetch, mile-vetch, cock's-head
  • N Astragalus alpinus – alpine milkvetch
  • N Astragalus americanus – American milkvetch
  • N Astragalus australis – Indian milkvetch
  • N Astragalus canadensis – Canada milkvetch, Carolina milkvetch
  • X Astragalus cicer – chickpea milkvetch
  • N Astragalus eucosmus – elegant milkvetch, pretty milkvetch
  • X Astragalus glycophyllos – wild liquorice
  • N Astragalus neglectus – Cooper's milkvetch
  • N Astragalus tenellus – pulse milkvetch, loose-flower milkvetch

• Athyrium
  • N Athyrium filix-femina var. angustum – northern lady fern
  • N Athyrium filix-femina var. cyclosorum – northwestern lady fern
• Atriplex
  • N Atriplex dioica – thickleaf orache, saline saltbush
  • N Atriplex glabriuscula – smooth orache, Scotland orache, glabrous orache, northeastern saltbush
  • X Atriplex heterosperma – two-scale orache
  • X Atriplex hortensis – garden orache
  • X Atriplex oblongifolia – oblong-leaf orache
  • N Atriplex patula – spear orache, spreading orache, spearscale, halberdleaf orache, common orache
  • N Atriplex prostrata – thinleaf orache, triangle orache, fat-hen
  • X Atriplex rosea – tumbling orache

• Aureolaria
  • N Aureolaria flava – yellow false-foxglove
  • N Aureolaria pedicularia – fernleaf yellow false-foxglove
  • N Aureolaria virginica – downy false-foxglove
• Aurinia
  • X Aurinia saxatilis – basket-of-gold, gold dust, gold alyssum

• Avena
  • X Avena fatua – wild oats
  • X Avena sativa – oats, cultivated oats
  • X Avena sterilis – animated oats

• Axyris
  • X Axyris amaranthoides – Russian pigweed, upright axyris

• Azolla
  • N Azolla caroliniana – mosquito fern

See: Flora of Canada#References