List of Canadian plants by genus

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

This is an incomplete list, which may never be able to satisfy particular standards for completeness. You can help by expanding it with reliably sourced entries.

Contents 1 Ab 2 Ac 3 Ad 4 Ae 5 Ag 6 Ai 7 Aj 8 Al 9 Am 10 An 11 Ap 12 Aq 13 Ar 14 As 15 At 16 Au 17 Av 18 Ax 19 Az 20 References

Ab

• 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

Ac

• 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

Ad

• 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

Ae

• 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

Ag

• 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

Ai

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

Aj

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

Al

• 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

Am

• 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

An

• 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

Ap

• 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

Aq

• 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

Ar

• 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

As

• 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

At

• 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

Au

• 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

Av

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

Ax

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

Az

• Azolla
  • N Azolla caroliniana — mosquito fern

References

See: Flora of Canada#References