Canada's Plant Hardiness Site
Pages 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 ZAbies amabilis Pacific silver fir
Abies balsamea balsam fir
Abies concolor white fir
Abies fraseri Fraser fir
Abies grandis grand fir
Abies lasiocarpa subalpine fir
Abies magnifica California red fir
Abies procera noble fir
Acer barbatum Florida maple
Acer buergeranum trident maple
Acer campestre hedge maple
Acer circinatum vine maple
Acer griseum paperbark maple
Acer macrophyllum big-leaf maple
Acer negundo box-elder
Acer palmatum Japanese maple
Acer pensylvanicum striped maple
Acer platanoides Norway maple
Acer rubrum red maple
Acer saccharinum silver maple
Acer saccharum sugar maple
Acer spicatum mountain maple
Acer tataricum Tatarian maple
Actinidia arguta bower actinidia
Aesculus californica California horsechestnut
Aesculus glabra Ohio buckeye
Aesculus hippocastanum horsechestnut
Aesculus parviflora bottlebrush buckeye
Aesculus pavia red horsechestnut
Aesculus sylvatica painted buckeye
Ailanthus altissima tree-of-heaven
Akebia quinata chocolate-vine
Albizia julibrissin silktree
Alnus glutinosa European black alder
Alnus incana gray alder
Alnus rhombifolia white alder
Alnus rubra red alder
Alnus serrulata smooth alder
Amelanchier alnifolia saskatoon
Amelanchier arborea downy serviceberry
Amelanchier bartramiana Bartram's shadbush
Amelanchier canadensis Canada serviceberry
Amelanchier laevis smooth serviceberry
Amelanchier sanguinea round-leaf serviceberry
Amorpha canescens downy false indigo
Amorpha fruticosa shrubby false indigo
Amorpha nana fragrant false indigo
Andromeda polifolia bog rosemary
Aralia spinosa devil's walkingstick
Aralia elata Chinese angelica-tree
Arbutus menziesii Pacific arbutus
Arctostaphylos uva-ursi bearberry
Aronia arbutifolia red chokeberry
Aronia melanocarpa black chokeberry
Aronia x prunifolia purple chokeberry
Asimina parviflora dwarf pawpaw
Asimina triloba pawpaw
Aspidistra elatior cast-iron plant
Aucuba japonica gold dust plant
Acanthus mollis oakleaf bear's-breeches
Achillea filipendulina fern-leaf yarrow
Achillea millefolium common yarrow
Achillea ptarmica sneezeweed yarrow
Achillea alpina Siberian yarrow
Achlys triphylla vanilla leaf
Aconitum napellus garden monkshood
Acorus calamus European sweetflag
Actaea pachypoda white baneberry
Actaea rubra red baneberry
Adiantum capillus-veneris southern maidenhair fern
Adiantum pedatum northern maidenhair fern
Adlumia fungosa climbing fumitory
Aegopodium podagraria goat's-foot
Agastache foeniculum blue giant hyssop
Ajuga genevensis Geneva bugle
Ajuga reptans creeping bugle
Alcea rosea common hollyhock
Alchemilla mollis soft lady's-mantle
Alisma plantago-aquatica European waterplantain
Allium acuminatum Hooker's onion
Allium cernuum nodding onion
Allium cristophii star-of-Persia
Allium schoenoprasum wild chives
Allium tuberosum garlic chives
Allium unifolium oneleaf onion
Althaea officinalis common marsh mallow
Amaryllis belladonna belladonna lily
Amsonia hubrichtii Arkansas amsonia
Amsonia tabernaemontana eastern bluestar
Anaphalis margaritacea pearly everlasting
Andropogon gerardii big bluestem
Anemone canadensis Canada anemone
Anemone coronaria poppy anemone
Aquilegia canadensis red columbine
Aquilegia chrysantha golden columbine
Aquilegia flabellata fan columbine
Aquilegia vulgaris garden columbine
Aralia racemosa spikenard
Arisaema triphyllum Jack-in-the-pulpit
Armeria maritima sea thrift
Armoracia rusticana red cole
Artemisia abrotanum southern wormwood
Artemisia absinthium common wormwood
Artemisia dracunculus dragon wormwood
Artemisia ludoviciana silver wormwood
Artemisia stelleriana beach wormwood
Artemisia tridentata big sagebrush
Artemisia vulgaris common wormwood
Arum italicum Italian arum
Aruncus dioicus goatsbeard
Asarum canadense wild ginger
Asarum caudatum var. caudatum
Asarum europaeum European wild ginger
Asclepias incarnata swamp milkweed
Asclepias tuberosa pleurisy root
Asparagus officinalis garden asparagus
Aster alpinus alpine aster
Aster tataricus Tartarian aster
Athyrium filix-femina common lady fern
Actaea racemosa black baneberry
Avenella flexuosa wavy hairgrass
Anthoxanthum nitens vanilla sweetgrass
Anticlea elegans mountain death camas
Acer x freemanii Freeman's maple
Agrostis scabra tickle grass
Allium stellatum autumn onion
Andropogon glomeratus bushy bluestem
Andropogon hallii sand bluestem
Andropogon virginicus broomsedge bluestem
Anemone cylindrica long-head anemone
Anemone multifida cut-leaf anemone
Anemone virginiana tall thimbleweed
Angelica atropurpurea purplestem angelica
Apocynum androsaemifolium spreading dogbane
Apocynum cannabinum hemp dogbane
Aquilegia brevistyla blue columbine
Arctostaphylos columbiana bristly bearberry
Arctostaphylos x media intermediate bearberry
Arisaema dracontium green dragon
Arnica chamissonis Chamisso's arnica
Artemisia cana silver wormwood
Asclepias ovalifolia ovalleaf milkweed
Asclepias speciosa showy milkweed
Asclepias sullivantii prairie milkweed
Asclepias syriaca common milkweed
Asclepias verticillata whorled milkweed
Astragalus canadensis Canada milkvetch
Astragalus crassicarpus ground-plum milkvetch
Atriplex canescens four-wing saltbush
Arnoglossum reniforme great Indian plantain; Fr:
Asplenium platyneuron ebony spleenwort
Asplenium rhizophyllum walking fern
Asplenium ruta-muraria wallrue spleenwort
Asplenium scolopendrium hart's-tongue fern
Asplenium trichomanes maidenhair spleenwort
Alisma subcordatum southern waterplantain
Alisma triviale northern waterplantain
Allium tricoccum wild leek
Arethusa bulbosa dragon's-mouth
Agropyron cristatum crested wheatgrass
Agrostis mertensii northern bentgrass
Agrostis perennans upland bentgrass
Alopecurus aequalis var. aequalis short-awn foxtail
Alopecurus geniculatus water foxtail
Arrhenatherum elatius tall oatgrass
Avena fatua spring wild oats
Adoxa moschatellina muskroot
Amaranthus blitoides prostrate amaranth
Amaranthus cruentus blood amaranth
Amaranthus hybridus smooth amaranth
Amaranthus retroflexus redroot amaranth
Atriplex glabriuscula glabrous orache
Axyris amaranthoides Russian pigweed
Apocynum x floribundum intermediate dogbane
Aralia nudicaulis small spikenard
Ambrosia artemisiifolia common ragweed
Ambrosia psilostachya perennial ragweed
Antennaria howellii Howell's pussytoes
Antennaria neglecta field pussytoes
Antennaria parlinii Parlin's pussytoes
Antennaria pulcherrima showy pussytoes
Anthemis cotula stinking chamomile
Arnica lonchophylla northern arnica
Artemisia campestris field wormwood
Artemisia frigida prairie sagebrush
Artemisia tilesii Tilesius wormwood
Alliaria petiolata hedge garlic
Alyssum alyssoides small alyssum
Arabidopsis thaliana mouseear cress
Arabidopsis arenicola arctic rockcress
Arabis hirsuta hairy rockcress
Arenaria serpyllifolia thyme-leaf sandwort
Acalypha wilkesiana beafsteak plant
Astragalus agrestis field milkvetch
Astragalus eucosmus elegant milkvetch
Astragalus tenellus loose flowered milkvetch
Abutilon theophrasti velvetleaf
Anemone acutiloba sharplobed hepatica
Agrimonia gryposepala hooked agrimony
Acer glabrum Rocky Mountain maple
Acer pseudoplatanus sycamore maple
Amaranthus albus tumbleweed amaranth
Atriplex patula spearleaf orache
Anethum graveolens dill
Angelica lucida seabeach angelica
Anthriscus sylvestris wild chervil
Apium graveolens stalk celery (var. dulce)
Asclepias exaltata poke milkweed
Aralia hispida bristly spikenard
Ageratina altissima richweed
Ambrosia trifida giant ragweed
Antennaria parvifolia small-leaf pussytoes
Antennaria rosea rosy pussytoes
Anthemis arvensis corn chamomile
Arctium minus common burdock
Arctium tomentosum woolly burdock
Arnica angustifolia narrowleaf arnica
Arnica cordifolia heartleaf arnica
Artemisia annua annual wormwood
Artemisia biennis biennial wormwood
Alnus alnobetula mountain alder
Arabidopsis lyrata lyreleaf rockcress
Arabis alpina alpine rockcress
Aurinia saxatilis basket of gold
Arenaria humifusa creeping sandwort
Amphicarpaea bracteata American hog peanut
Apios americana American groundnut
Astragalus alpinus alpine milkvetch
Astragalus americanus American milkvetch
Agalinis paupercula smallflower gerardia
Agalinis tenuifolia slender-leaf false foxglove
Antirrhinum majus garden snapdragon
Androsace septentrionalis northern rock-jasmine
Anemone americana roundlobed hepatica
Anemone parviflora northern anemone
Anemone quinquefolia wood anemone
Anemone richardsonii Richardson's anemone
Agrimonia striata woodland agrimony
Amelanchier humilis low serviceberry
Amelanchier interior inland serviceberry
Amelanchier intermedia purple serviceberry
Arceuthobium americanum lodgepole pine mistletoe
Arceuthobium pusillum eastern dwarf mistletoe
Aesculus flava yellow buckeye
Astilbe japonica florist's spiraea
Asplenium viride green spleenwort
Anchistea virginica Virginia chain fern
Amauropelta noveboracensis New York fern
Acorus americanus American sweetflag
Allium canadense Canada garlic
Agrostis capillaris colonial bentgrass
Agrostis gigantea redtop
Agrostis stolonifera creeping bentgrass
Alopecurus magellanicus alpine foxtail
Alopecurus pratensis meadow foxtail
Anthoxanthum odoratum sweet vernalgrass
Arctagrostis latifolia polargrass
Avena sativa cultivated oats
Anthoxanthum monticola alpine sweetgrass
Anthoxanthum arcticum arctic sweetgrass
Amaranthus powellii Powell's smooth amaranth
Atriplex littoralis narrowleaf orache
Agoseris glauca pale agoseris
Antennaria luzuloides woodrush pussytoes
Askellia elegans elegant hawksbeard
Arctium lappa great burdock
Asperugo procumbens catchweed
Atocion armeria sweet William catchfly
Agrostemma githago var. githago corn cockle
Aureolaria pedicularia fern-leaf yellow false foxglove
Atriplex prostrata thinleaf orach
Atriplex dioica thickleaf orach
Acalypha virginica Virginia threeseed mercury
Agalinis purpurea purple false foxglove
Agrostis hyemalis winter bentgrass
Anthoxanthum hirtum hairy sweetgrass
Antennaria microphylla littleleaf pussytoes
Astragalus australis subarctic milkvetch
Aristida basiramea forked three-awn grass
Allium sativum cultivated garlic
Apera interrupta interrupted bentgrass
Agalinis gattingeri Gattinger's false foxglove
Amaranthus tuberculatus roughfruit amaranth
Asclepias viridiflora green milkweed
Astragalus neglectus neglected milkvetch
Amelanchier cusickii Cusick's serviceberry
Astragalus laxmannii Laxmann's milkvetch
Acer grandidentatum bigtooth maple
Abies bifolia Rocky Mountain alpine fir
Artemisia borealis boreal wormwood
Amaranthus blitum purple amaranth
Amaranthus californicus California amaranth
Amaranthus palmeri Palmer's amaranth
Amaranthus spinosus spiny amaranth
Atriplex argentea silver orache
Atriplex gardneri Gardner's saltbush
Atriplex gmelinii Gmelin's orache
Atriplex hortensis garden orache
Atriplex powellii Powell's orache
Atriplex rosea red orache
Atriplex truncata wedgeleaf orache
Aethusa cynapium fool's parsley
Angelica arguta Lyall's angelica
Angelica dawsonii Dawson's angelica
Angelica genuflexa kneeling angelica
Angelica sylvestris wild angelica
Anthriscus caucalis burr parsley
Asclepias hirtella prairie milkweed
Asclepias lanuginosa sidecluster milkweed
Asclepias purpurascens purple milkweed
Asclepias quadrifolia whorled milkweed
Asclepias variegata redring milkweed
Acanthospermum hispidum hispid starburr
Adenocaulon bicolor pathfinder
Agoseris aurantiaca orange agoseris
Agoseris grandiflora large-flower agoseris
Agoseris heterophylla annual agoseris
Almutaster pauciflorus marsh alkali aster
Ambrosia acanthicarpa burr ragweed
Ambrosia chamissonis silver burrweed
Anisocarpus madioides woodland tarweed
Antennaria alpina alpine pussytoes
Antennaria anaphaloides pearly pussytoes
Antennaria aromatica scented pussytoes
Antennaria corymbosa flat-top pussytoes
Antennaria dimorpha low pussytoes
Antennaria flagellaris whip pussytoes
Antennaria friesiana Fries' pussytoes
Antennaria lanata woolly pussytoes
Antennaria media Rocky Mountain pussytoes
Antennaria monocephala pygmy pussytoes
Antennaria racemosa racemose pussytoes
Antennaria umbrinella umber pussytoes
Arnica fulgens hillside arnica
Arnica gracilis slender arnica
Arnica griscomii Griscom's arnica
Arnica lanceolata lanceleaf arnica
Arnica latifolia broadleaf arnica
Arnica lessingii Lessing's arnica
Arnica longifolia spear-leaf arnica
Arnica louiseana Lake Louise arnica
Arnica mollis hairy arnica
Arnica ovata sticky arnica
Arnica parryi Parry's arnica
Arnica sororia twin arnica
Arnoglossum plantagineum groove-stem plantain
Artemisia globularia purple wormwood
Artemisia glomerata clustered wormwood
Artemisia longifolia long-leaf wormwood
Artemisia michauxiana Michaux's wormwood
Artemisia norvegica alpine wormwood
Artemisia suksdorfii coastal wormwood
Artemisia tripartita three-tip sagebrush
Amphiscirpus nevadensis Nevada bulrush
Alisma gramineum grassleaf waterplantain
Alisma lanceolatum lanceleaf waterplantain
Allium amplectens slimleaf onion
Allium crenulatum Olympic onion
Allium geyeri Geyer's onion
Allium textile prairie onion
Allium validum swamp onion
Allium vineale wild garlic
Anticlea occidentalis western mountain-bells
Aletris farinosa white colicroot
Aplectrum hyemale puttyroot
Agrostis microphylla small-leaf bentgrass
Agrostis oregonensis Oregon bentgrass
Agrostis pallens dune bentgrass
Agrostis variabilis mountain bentgrass
Aira caryophyllea silver hairgrass
Aira praecox early hairgrass
Alopecurus arundinaceus creeping foxtail
Anthoxanthum aristatum annual vernalgrass
Aristida dichotoma var. dichotoma churchmouse threeawn
Aristida longespica long-spike threeawn
Aristida oligantha oldfield threeawn
Aristida purpurascens arrow-feather threeawn
Aristida purpurea purple threeawn
Aegilops cylindrica jointed goatgrass
Achlys californica California deerfoot
Amsinckia lycopsoides bugloss fiddleneck
Amsinckia menziesii Menzies' fiddleneck
Amsinckia intermedia common fiddleneck
Amsinckia spectabilis seaside fiddleneck
Anchusa officinalis common bugloss
Aconitum columbianum Columbia monkshood
Aconitum delphiniifolium mountain monkshood
Anemone drummondii Drummond's anemone
Anemone lyallii Lyall's anemone
Anemone occidentalis western pasqueflower
Anemone piperi Piper's anemone
Aquilegia flavescens yellow columbine
Aquilegia formosa var. Formosa western columbine
Argemone mexicana Mexican prickly-poppy
Annona glabra pond apple
Annona squamosa sweetsop
Asimina obovata bigflower pawpaw
Arbutus arizonica Arizona madrone
Arbutus xalapensis Texas madrone
Arctostaphylos glauca bigberry manzanita
Arctostaphylos manzanita common manzanita
Aphragmus eschscholtzianus Eschscholtz's little nightmare
Arabis eschscholtziana Eschscholtz's hairy rockcress
Arabis nuttallii Nuttall's rockcress
Arabis pycnocarpa western hairy rockcress
Athysanus pusillus dwarf anthysanus
Azolla filiculoides large mosquito fern
Azolla mexicana Mexican mosquito fern
Adiantum aleuticum Aleutian maidenhair fern
Aspidotis densa dense lace fern
Amauropelta nevadensis Sierra marsh fern
Agrimonia parviflora swamp agrimony
Agrimonia pubescens soft agrimony
Aphanes australis small-fruit parsley-piert
Aphanes occidentalis western parsley-piert
Acmispon americanus American birdsfoot trefoil
Acmispon denticulatus riverbar lotus
Acmispon nevadensis Nevada bird's-foot trefoil
Acmispon parviflorus small-flower birdsfoot trefoil
Astragalus beckwithii Beckwith's milkvetch
Astragalus bisculatus var. bisculatus two-groove milkvetch
Astragalus bodinii Bodin's milkvetch
Astragalus bourgovii Bourgov's milkvetch
Astragalus cicer chickpea milkvetch
Astragalus collinus hillside milkvetch
Astragalus convallarius lesser rushy milkvetch
Astragalus drummondii Drummond's milkvetch
Astragalus filipes basalt milkvetch
Astragalus flexuosus flexible milkvetch
Astragalus gilviflorus plains milkvetch
Astragalus gracilis slender milkvetch
Astragalus kentrophyta spiny milkvetch
Astragalus lentiginosus freckled milkvetch
Astragalus lotiflorus lotus milkvetch
Astragalus miser timber milkvetch
Astragalus missouriensis Missouri milkvetch
Astragalus nutzotinensis Nutzotin milkvetch
Astragalus pectinatus narrow-leaf milkvetch
Astragalus purshii Pursh's milkvetch
Astragalus racemosus creamy milkvetch
Astragalus robbinsii Robbins' milkvetch
Astragalus sclerocarpus woody-pod milkvetch
Astragalus spatulatus tufted milkvetch
Astragalus umbellatus tundra milkvetch
Astragalus vexilliflexus bent-flower milkvetch
Astragalus williamsii Williams' milkvetch
Anoda cristata crested anoda
Achillea distans Alps yarrow
Arnica rydbergii Rydberg's arnica
Ammannia coccinea valley redstem
Ammannia robusta scarlet ammannia
Agastache nepetoides agastache faux-népéta
Agastache scrophulariifolia agastache à feuilles de scrofulaire
Agastache urticifolia nettle-leaf giant hyssop
Agalinis aspera rough false foxglove
Agalinis maritima saltmarsh false foxglove
Agalinis neoscotica Nova Scotia false foxglove
Agalinis skinneriana Skinner's false foxglove
Aureolaria flava smooth yellow false foxglove
Aureolaria virginica downy yellow false foxglove
Angelica pinnata
Angelica venenosa hairy angelica
Androsace chamaejasme sweetflower rock-jasmine
Androsace filiformis filiform rock-jasmine
Androsace occidentalis western rock-jasmine
Antennaria plantaginifolia plantain-leaf pussytoes
Arceuthobium campylopodum western dwarf mistletoe
Arceuthobium douglasii Douglas-fir dwarf mistletoe
Amaranthus pumilus seabeach amaranth
Allium bolanderi Bolander's onion
Asclepias amplexicaulis clasping milkweed
Asclepias meadii Mead's milkweed
Asclepias pedicellata savannah milkweed
Asclepias rubra red milkweed
Asclepias viridis green antlopehorn
Asplenium pinnatifidum
Asplenium septentrionale forked spleenwort
Ambrosia linearis Colorado bursage
Antennaria solitaria single-head pussytoes
Antennaria virginica shale-barren pussytoes
Arabis patens
Allotropa virgata candystick
Amorpha ouachitensis Ouachita Mountain leadplant
Apios priceana Price's potato-bean
Astragalus barrii Barr's milkvetch
Astragalus michauxii sandhills milkvetch
Astragalus musiniensis Ferron's milkvetch
Astragalus paysonii Payson's milkvetch
Astragalus tennesseensis Tennessee milkvetch
Acanthomintha ilicifolia San Diego thornmint
Amianthium muscitoxicum fly poison
Abronia umbellata pink sand-verbena
Agalinis aphylla scale-leaf false foxglove
Agalinis auriculata auriculate false foxglove
Agalinis filicaulis Seminole false foxglove
Aureolaria patula spreading yellow false foxglove
Arctomecon californica Las Vegas bear-poppy
Arctomecon merriamii great bearclaw-poppy
Aristida tuberculosa seaside threeawn
Aconitum reclinatum white monkshood
Actaea podocarpa mountain bugbane
Actaea rubifolia Appalachian bugbane
Adolphia californica California adolphia
Agrimonia incisa incised agrimony
Agrimonia rostellata woodland agrimony
Actaea elata tall bugbane
Agrostis exarata spike bentgrass
Alopecurus carolinianus tufted foxtail
Abronia latifolia yellow sand-verbena
Agrostis idahoensis Idaho bentgrass
Allium campanulatum
Allium madidum swamp onion
Asplenium bradleyi Bradley's spleenwort
Amsinckia lunaris bent-flower fiddleneck
Acalypha rhomboidea rhombic three-seed mercury
Astragalus spaldingii Spalding's milkvetch
Actaea x ludovici Ludovic's baneberry
Abronia angustifolia purple sand verbena
Abronia elliptica fragrant white sand verbena
Abronia fragrans snowball sand verbena
Abronia nana dwarf sand verbena
Abronia villosa desert sand verbena
Abutilon abutiloides shrubby Indian mallow
Abutilon incanum pelotazo
Achillea borealis boreal yarrow
Artemisia douglasiana Douglas’ wormwood
Acalypha gracilens slender three-seed mercury
Acmispon decumbens pine deer-vetch
Astragalus curvicarpus curve-pod milkvetch
Astragalus multiflorus loose-flower milkvetch
Agalinis decemloba sandplain agalinis
Aphyllon californicum California broomrape
Aphyllon corymbosum flat-top broomrape
Aphyllon fasciculatum clustered broomrape
Aphyllon franciscanum Franciscan broomrape
Aphyllon ludovicianum Louisiana broomrape
Aphyllon pinorum pine broomrape
Aphyllon purpureum purple broomrape
Aphyllon uniflorum naked broomrape
Alopecurus saccatus Pacific meadow foxtail
Anemonastrum canadense Canada anemone
Anemonastrum richardsonii Richardson's anemone
Aquilegia ×miniana hybrid columbine
Amelanchier obovalis coastal serviceberry
Argentina anserina silverweed
Argentina pacifica Pacific silverweed
Aruncus sylvester Korean goatsbeard
Acer floridanum southern sugar maple
Acer ginnala Amur maple
Acer nigrum black maple
Acer leucoderme chalk maple
Ampelopsis glandulosa Amur peppervine
Amsinckia retrorsa rough fiddleneck
Athyrium americanum American alpine lady fern
Athyrium angustum northeastern lady fern
Andersonglossum boreale northern wild comfrey
Andersonglossum virginianum wild comfrey
Askellia pygmaea dwarf hawksbeard
Ageratum houstonianum bluemink
Ampelaster carolinianus climbing aster
Azolla caroliniana eastern mosquito fern
Alkekengi officinarum Chinese lantern
Acer saccharum subsp. leucoderme chalk maple
Acer saccharum subsp. nigrum black maple
Alnus incana subsp. tenuifolia western mountain alder
Alnus alnobetula subsp. sinuata Sitka alder
Alnus alnobetula subsp. fruticosa Siberian alder
Asclepias incarnata subsp. incarnata red milkweed
Aralia racemosa subsp. racemosa spikenard
Antennaria howellii subsp. howellii Howell's pussytoes
Antennaria parlinii subsp. fallax deceitful pussytoes
Antennaria parlinii subsp. parlinii Parlin's pussytoes
Antennaria rosea subsp. confinis brown-edged pussytoes
Antennaria rosea subsp. rosea rosy pussytoes
Arnica angustifolia subsp. angustifolia narrowleaf arnica
Artemisia campestris subsp. caudata tall wormwood
Artemisia ludoviciana subsp. ludoviciana Louisiana wormwood
Aster alpinus subsp. vierhapperi Vierhapper's aster
Alnus incana subsp. rugosa speckled alder
Armeria maritima subsp. sibirica Siberian sea thrift
Acer saccharum subsp. saccharum sugar maple
Asplenium trichomanes subsp. trichomanes maidenhair spleenwort
Arctagrostis latifolia subsp. latifolia broad-leaf polargrass
Antennaria luzuloides subsp. luzuloides woodrush pussytoes
Arabidopsis lyrata subsp. lyrata lyreleaf rockcress
Antennaria howellii subsp. canadensis Canada pussytoes
Antennaria howellii subsp. neodioica northern pussytoes
Antennaria howellii subsp. petaloidea petaloid pussytoes
Artemisia tridentata subsp. vaseyana mountain sagebrush
Arabidopsis lyrata subsp. kamchatica Kamchatka rockcress
Asclepias incarnata subsp. pulchra hairy milkweed
Antennaria friesiana subsp. alaskana Alaska pussytoes
Antennaria friesiana subsp. friesiana Fries' pussytoes
Antennaria monocephala subsp. angustata narrowleaf pygmy pussytoes
Antennaria monocephala subsp. monocephala pygmy pussytoes
Antennaria rosea subsp. pulvinata pulvinate pussytoes
Arnica angustifolia subsp. tomentosa woolly arnica; Fr: arnica tomenteuse
Arnica griscomii subsp. frigida snow arnica
Artemisia borealis subsp. borealis boreal wormwood
Artemisia borealis subsp. richardsoniana Richardson's wormwood
Artemisia cana subsp. cana silver wormwood
Artemisia ludoviciana subsp. candicans gray sagewort
Artemisia ludoviciana subsp. incompta Columbia River wormwood
Artemisia norvegica subsp. saxatilis mountain sagewort
Artemisia tridentata subsp. tridentata big sagebrush
Artemisia tripartita subsp. tripartita three-tip sagebrush
Aconitum columbianum subsp. columbianum Columbia monkshood
Anemone drummondii var. drummondii Drummond's anemone
Armeria maritima subsp. californica western sea thrift
Apocynum androsaemifolium subsp. androsaemifolium spreading dogbane
Apocynum androsaemifolium subsp. pumilum low dogbane
Androsace chamaejasme subsp. lehmanniana sweetflower rock-jasmine
Actaea rubra subsp. arguta western red baneberry
Antennaria alpina subsp. canescens alpine pussytoes
Artemisia campestris subsp. canadensis Canada wormwood
Agropyron cristatum subsp. pectinatum pectinate wheatgrass
Andromeda polifolia var. latifolia glaucous-leaf bog rosemary
Ageratina altissima var. altissima richweed
Agalinis tenuifolia var. parviflora slenderleaf false foxglove
Agalinis tenuifolia var. tenuifolia slenderleaf false foxglove
Anemone virginiana var. alba riverbank thimbleweed
Aesculus glabra var. arguta Texas buckeye
Aesculus glabra var. glabra Ohio buckeye
Aesculus pavia var. pavia red buckeye
Asplenium scolopendrium var. americanum American hart's-tongue fern
Allium canadense var. canadense Canada garlic
Arisaema triphyllum subsp. triphyllum Jack-in-the-pulpit
Allium schoenoprasum var. sibiricum wild chives
Agoseris glauca var. glauca e agoseris
Agoseris glauca var. dasycephala alpine agoseris
Allium tricoccum var. burdickii narrowleaf wild leek
Allium tricoccum var. tricoccum wild leek
Andromeda polifolia var. polifolia northern bog rosemary
Anemone multifida var. multifida cutleaf anemone
Anemone quinquefolia var. quinquefolia wood anemone
Anemone virginiana var. virginiana tall thimbleweed
Acer rubrum var. rubrum red maple
Acer rubrum var. trilobum three-lobed red maple
Acer negundo var. interius boxelder
Acer negundo var. negundo box-elder