List of Canadian plants by family A

"Main page:" List of Canadian plants by family

Families:
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Acanthaceae

* "Justicia americana" — common water-willow

Aceraceae

* "Acer circinatum" — vine maple
* "Acer glabrum" — Douglas maple
* "Acer macrophyllum" — bigleaf maple
* "Acer negundo" — box-elder
* "Acer nigrum" — black maple
* "Acer pensylvanicum" — striped maple
* "Acer rubrum" — red maple
* "Acer saccharinum" — silver maple
* "Acer saccharum" — sugar maple
* "Acer spicatum" — mountain maple
* "Acer x freemanii" — Freeman's maple

Acoraceae

* "Acorus americanus" — sweetflag

Adelanthaceae

* "Odontoschisma denudatum"
* "Odontoschisma elongatum"
* "Odontoschisma gibbsiae"
* "Odontoschisma macounii"
* "Odontoschisma sphagni"

Adoxaceae

* "Adoxa moschatellina" — muskroot

Agavaceae

* "Yucca filamentosa" — common yucca
* "Yucca glauca" — small soapweed yucca

Alismataceae

* "Alisma gramineum" — narrowleaf water-plantain
* "Alisma subcordatum" — broad-leaved water-plantain
* "Alisma triviale" — northern water-plantain
* "Sagittaria brevirostra" — short-beaked arrowhead
* "Sagittaria calycina" — longlobe arrowhead
* "Sagittaria cristata" — crested arrowhead
* "Sagittaria cuneata" — Wapatum arrowhead
* "Sagittaria graminea" — grassleaf arrowhead
* "Sagittaria latifolia" — broadleaf arrowhead
* "Sagittaria rigida" — sessile-fruit arrowhead

Amaranthaceae

* "Amaranthus albus" — white pigweed
* "Amaranthus californicus" — California amaranth
* "Amaranthus powellii" — green amaranth
* "Amaranthus rudis" — tall amaranth
* "Amaranthus tuberculatus" — roughfruit amaranth

Amblystegiaceae

* "Amblystegium serpens" — amblystegium moss
* "Amblystegium varium"
* "Calliergon cordifolium" — calliergon moss
* "Calliergon giganteum" — giant calliergon moss
* "Calliergon megalophyllum"
* "Calliergon obtusifolium"
* "Calliergon orbicularicordatum"
* "Calliergon richardsonii"
* "Calliergon stramineum"
* "Calliergon trifarium"
* "Calliergonella cuspidata"
* "Campylium cardotii"
* "Campylium chrysophyllum"
* "Campylium halleri"
* "Campylium hispidulum"
* "Campylium polygamum" — campylium moss
* "Campylium radicale"
* "Campylium stellatum" — yellow starry fen moss
* "Conardia compacta"
* "Cratoneuron filicinum"
* "Drepanocladus aduncus" — drepanocladus moss
* "Drepanocladus brevifolius"
* "Drepanocladus capillifolius"
* "Drepanocladus crassicostatus"
* "Drepanocladus sendtneri"
* "Hamatocaulis lapponicus"
* "Hamatocaulis vernicosus"
* "Hygroamblystegium fluviatile"
* "Hygroamblystegium noterophilum"
* "Hygroamblystegium tenax"
* "Hygrohypnum alpestre"
* "Hygrohypnum alpinum"
* "Hygrohypnum bestii"
* "Hygrohypnum cochlearifolium"
* "Hygrohypnum duriusculum"
* "Hygrohypnum eugyrium"
* "Hygrohypnum luridum"
* "Hygrohypnum micans"
* "Hygrohypnum molle"
* "Hygrohypnum montanum"
* "Hygrohypnum norvegicum"
* "Hygrohypnum ochraceum"
* "Hygrohypnum polare"
* "Hygrohypnum smithii"
* "Hygrohypnum styriacum"
* "Hygrohypnum subeugyrium"
* "Leptodictyum humile"
* "Leptodictyum riparium"
* "Limprichtia cossonii"
* "Limprichtia revolvens" — limprichtia moss
* "Loeskypnum badium"
* "Loeskypnum wickesiae"
* "Palustriella commutata"
* "Palustriella decipiens"
* "Platylomella lescurii"
* "Pseudocalliergon turgescens"
* "Sanionia uncinata"
* "Sarmenthypnum sarmentosum"
* "Scorpidium scorpioides"
* "Warnstorfia exannulata" — warnstorfia moss
* "Warnstorfia fluitans" — warnstorfia moss
* "Warnstorfia procera"
* "Warnstorfia pseudostraminea"
* "Warnstorfia trichophylla"
* "Warnstorfia tundrae"

Anacardiaceae

* "Rhus aromatica" — fragrant sumac
* "Rhus copallinum" — winged sumac
* "Rhus glabra" — smooth sumac
* "Rhus trilobata" — skunkbush
* "Rhus typhina" — staghorn sumac
* "Rhus x pulvinata"
* "Toxicodendron diversilobum" — western poison-oak
* "Toxicodendron radicans" — eastern poison-ivy
* "Toxicodendron rydbergii" — northern poison-oak
* "Toxicodendron vernix" — poison-sumac

Andreaeaceae

* "Andreaea alpestris"
* "Andreaea blyttii"
* "Andreaea crassinervia"
* "Andreaea heinemannii"
* "Andreaea megistospora"
* "Andreaea mutabilis"
* "Andreaea nivalis"
* "Andreaea obovata"
* "Andreaea rothii"
* "Andreaea rupestris"
* "Andreaea schofieldiana"
* "Andreaea sinuosa"

Andreaeobryaceae

* "Andreaeobryum macrosporum"

Aneuraceae

* "Aneura pinguis"
* "Riccardia chamedryfolia"
* "Riccardia latifrons"
* "Riccardia multifida" — comb liverwort
* "Riccardia palmata"

Annonaceae

* "Asimina triloba" — pawpaw

Anomodontaceae

* "Anomodon attenuatus"
* "Anomodon minor"
* "Anomodon rostratus"
* "Anomodon rugelii"
* "Anomodon viticulosus"
* "Haplohymenium triste"
* "Pterogonium gracile"

Antheliaceae

* "Anthelia julacea"
* "Anthelia juratzkana"

Anthocerotaceae

* "Anthoceros fusiformis"
* "Anthoceros macounii"

Apiaceae

* "Angelica archangelica" — Norwegian angelica
* "Angelica arguta" — Lyall's angelica
* "Angelica atropurpurea" — great angelica
* "Angelica dawsonii" — Dawson's angelica
* "Angelica genuflexa" — kneeling angelica
* "Angelica laurentiana" — St. Lawrence angelica
* "Angelica lucida" — seacoast angelica
* "Angelica venenosa" — hairy angelica
* "Berula erecta" — wild parsnip
* "Bupleurum americanum" — American thorowax
* "Chaerophyllum procumbens" — spreading chervil
* "Chaerophyllum tainturieri" — Tainturier's chervil
* "Cicuta bulbifera" — bulb-bearing water-hemlock
* "Cicuta douglasii" — western water-hemlock
* "Cicuta maculata" — spotted water-hemlock
* "Cicuta virosa" — MacKenzie's water-hemlock
* "Cnidium cnidiifolium" — Jakutsk snow parsley
* "Conioselinum chinense" — Chinese hemlock-parsley
* "Conioselinum gmelinii" — western hemlock-parsley
* "Cryptotaenia canadensis" — Canada honewort
* "Cymopterus acaulis" — plains wavewing
* "Daucus pusillus" — southwestern carrot
* "Erigenia bulbosa" — harbinger-of-spring
* "Glehnia littoralis" — American glehnia
* "Heracleum maximum" — cow-parsnip
* "Hydrocotyle americana" — American water-pennywort
* "Hydrocotyle umbellata" — many-flowered pennywort
* "Hydrocotyle verticillata" — whorled pennywort
* "Ligusticum calderi" — Calder's lovage
* "Ligusticum canbyi" — Canby's wild lovage
* "Ligusticum scoticum" — Scotch lovage
* "Ligusticum verticillatum" — Idaho lovage
* "Lilaeopsis chinensis" — eastern lilæopsis
* "Lilaeopsis occidentalis" — western lilæopsis
* "Lomatium ambiguum" — streambank desert-parsley
* "Lomatium brandegeei" — Brandegee's desert-parsley
* "Lomatium cous" — cousroot desert-parsley
* "Lomatium dissectum" — fernleaf desert-parsley
* "Lomatium foeniculaceum" — carrotleaf desert-parsley
* "Lomatium geyeri" — Geyer's desert-parsley
* "Lomatium grayi" — mountain desert-parsley
* "Lomatium macrocarpum" — largefruit desert-parsley
* "Lomatium martindalei" — coast range lomatium
* "Lomatium nudicaule" — nakedstem desert-parsley
* "Lomatium orientale" — Oriental desert-parsley
* "Lomatium sandbergii" — Sandberg's desert-parsley
* "Lomatium simplex" — umbrella desert-parsley
* "Lomatium triternatum" — ternate desert-parsley
* "Lomatium utriculatum" — foothill desert-parsley
* "Musineon divaricatum" — wild parsley
* "Oenanthe sarmentosa" — water-parsley
* "Osmorhiza berteroi" — Chilean sweet-cicely
* "Osmorhiza claytonii" — hairy sweet-cicely
* "Osmorhiza depauperata" — bluntfruit sweet-cicely
* "Osmorhiza longistylis" — smoother sweet-cicely
* "Osmorhiza occidentalis" — western sweet-cicely
* "Osmorhiza purpurea" — purple sweet-cicely
* "Oxypolis occidentalis" — western cowbane
* "Oxypolis rigidior" — stiff cowbane
* "Perideridia gairdneri" — Gairdner's yampah
* "Podistera macounii" — Macoun's podistera
* "Podistera yukonensis" — Yukon podistera
* "Sanicula arctopoides" — bear's-foot sanicle
* "Sanicula bipinnatifida" — purple black snakeroot
* "Sanicula canadensis" — short-styled sanicle
* "Sanicula crassicaulis" — Pacific black snakeroot
* "Sanicula graveolens" — sierra sanicle
* "Sanicula marilandica" — Maryland black snakeroot
* "Sanicula odorata" — clustered black snakeroot
* "Sanicula trifoliata" — large-fruited sanicle
* "Sium suave" — hemlock water-parsnip
* "Taenidia integerrima" — yellow pimpernel
* "Thaspium barbinode" — hairyjoint meadow-parsnip
* "Thaspium trifoliatum" — purple meadow-parsnip
* "Yabea microcarpa" — California hedge-parsley
* "Zizia aptera" — golden alexanders
* "Zizia aurea" — common alexanders

Apocynaceae

* "Apocynum androsaemifolium" — spreading dogbane
* "Apocynum cannabinum" — clasping-leaf dogbane
* "Apocynum x floribundum" — hybrid dogbane

Aquifoliaceae

* "Ilex glabra" — ink-berry
* "Ilex verticillata" — black holly
* "Nemopanthus mucronatus" — mountain holly

Araceae

* "Arisaema dracontium" — green dragon
* "Arisaema triphyllum" — swamp Jack-in-the-pulpit
* "Calla palustris" — wild calla
* "Lysichiton americanus" — yellow skunk-cabbage
* "Peltandra virginica" — green arrow-arum
* "Symplocarpus foetidus" — skunk-cabbage

Araliaceae

* "Aralia hispida" — bristly sarsaparilla
* "Aralia nudicaulis" — wild sarsaparilla
* "Aralia racemosa" — American spikenard
* "Oplopanax horridus" — Devil's-club
* "Panax quinquefolius" — American ginseng
* "Panax trifolius" — dwarf ginseng

Archidiaceae

* "Archidium ohioense"

Aristolochiaceae

* "Asarum canadense" — Canada wild-ginger
* "Asarum caudatum" — long-tailed wild-ginger

Arnelliaceae

* "Arnellia fennica"

Asclepiadaceae

* "Asclepias exaltata" — poke milkweed
* "Asclepias hirtella" — green milkweed
* "Asclepias incarnata" — swamp milkweed
* "Asclepias lanuginosa" — woolly milkweed
* "Asclepias ovalifolia" — dwarf milkweed
* "Asclepias purpurascens" — purple milkweed
* "Asclepias quadrifolia" — whorled milkweed
* "Asclepias speciosa" — showy milkweed
* "Asclepias sullivantii" — prairie milkweed
* "Asclepias syriaca" — Kansas milkweed
* "Asclepias tuberosa" — butterfly milkweed
* "Asclepias verticillata" — whorled milkweed
* "Asclepias viridiflora" — green milkweed

Aspleniaceae

* "Asplenium adulterinum" — ladder spleenwort
* "Asplenium platyneuron" — ebony spleenwort
* "Asplenium rhizophyllum" — walking-fern spleenwort
* "Asplenium ruta-muraria" — wallrue spleenwort
* "Asplenium scolopendrium" — hart's-tongue fern
* "Asplenium trichomanes" — maidenhair spleenwort
* "Asplenium trichomanes-ramosum" — green spleenwort

Asteraceae

* "Achillea millefolium" — common yarrow
* "Achillea sibirica" — Siberian yarrow
* "Adenocaulon bicolor" — American trail-plant
* "Ageratina altissima" — white snakeroot
* "Agoseris aurantiaca" — orange-flowered false-dandelion
* "Agoseris gaspensis" — Gaspé Peninsula agoseris
* "Agoseris glauca" — pale goat-chicory
* "Agoseris grandiflora" — largeflower false-dandelion
* "Agoseris heterophylla" — annual false-dandelion
* "Agoseris lackschewitzii" — pink agoseris
* "Almutaster pauciflorus" — marsh alkali aster
* "Ambrosia acanthicarpa" — flatspine bursage
* "Ambrosia artemisiifolia" — annual ragweed
* "Ambrosia chamissonis" — silver bursage
* "Ambrosia coronopifolia" — western ragweed
* "Ambrosia psilostachya" — nakedspike ambrosia
* "Ambrosia trifida" — great ragweed
* "Ambrosia x helenae"
* "Anaphalis margaritacea" — pearly everlasting
* "Antennaria alpina" — alpine pussytoes
* "Antennaria anaphaloides" — handsome pussytoes
* "Antennaria aromatica" — aromatic pussytoes
* "Antennaria corymbosa" — meadow pussytoes
* "Antennaria densifolia" — dense-leaved antennaria
* "Antennaria dimorpha" — two-form pussytoes
* "Antennaria eucosma" — Newfoundland pussytoes
* "Antennaria flagellaris" — stoloniferous pussytoes
* "Antennaria friesiana" — Fries' pussytoes
* "Antennaria howellii" — small pussytoes
* "Antennaria lanata" — white-margined pussytoes
* "Antennaria luzuloides" — silvery-brown pussytoes
* "Antennaria media" — Stony Mountain pussytoes
* "Antennaria microphylla" — small-leaf cat's-foot
* "Antennaria monocephala" — single-head pussytoes
* "Antennaria neglecta" — field pussytoes
* "Antennaria parlinii" — Parlin's pussytoes
* "Antennaria parvifolia" — Nuttall's pussytoes
* "Antennaria plantaginifolia" — plantainleaf pussytoes
* "Antennaria pulcherrima" — handsome pussytoes
* "Antennaria racemosa" — Hooker's pussytoes
* "Antennaria rosea" — rosy pussytoes
* "Antennaria stenophylla" — narrowleaf pussytoes
* "Antennaria umbrinella" — brown pussytoes
* "Antennaria x erigeroides"
* "Antennaria x macounii"
* "Antennaria x rousseaui"
* "Arnica amplexicaulis" — streambank arnica
* "Arnica angustifolia" — narrowleaf leopardbane
* "Arnica chamissonis" — leafy arnica
* "Arnica cordifolia" — heart-leaved arnica
* "Arnica frigida" — snow leopardbane
* "Arnica fulgens" — hillside arnica
* "Arnica gracilis" — slender leopardbane
* "Arnica lanceolata"
* "Arnica latifolia" — mountain arnica
* "Arnica lessingii" — Lessing's arnica
* "Arnica lonchophylla" — northern arnica
* "Arnica longifolia" — longleaf arnica
* "Arnica louiseana" — Lake Louise arnica
* "Arnica mollis" — hairy arnica
* "Arnica parryi" — nodding arnica
* "Arnica rydbergii" — subalpine arnica
* "Arnica sororia" — twin arnica
* "Arnica x diversifolia" — rayless arnica
* "Arnoglossum plantagineum" — Indian-plantain
* "Artemisia alaskana" — Alaska wormwood
* "Artemisia arctica" — boreal sagebrush
* "Artemisia biennis" — biennial wormwood
* "Artemisia campestris" — Pacific wormwood
* "Artemisia cana" — hoary sagebrush
* "Artemisia dracunculus" — dragon wormwood
* "Artemisia frigida" — prairie sagebrush
* "Artemisia furcata" — three-fork wormwood
* "Artemisia globularia" — arctic wormwood
* "Artemisia glomerata" — Pacific alpine wormwood
* "Artemisia laciniata" — Siberian wormwood
* "Artemisia lindleyana" — Columbia River wormwood
* "Artemisia longifolia" — longleaf wormwood
* "Artemisia ludoviciana" — white sagebrush
* "Artemisia michauxiana" — Michaux's wormwood
* "Artemisia rupestris" — rock wormwood
* "Artemisia suksdorfii" — coastal wormwood
* "Artemisia tilesii" — Tilesius' wormwood
* "Artemisia tridentata" — big sagebrush
* "Artemisia tripartita" — three-tip sagebrush
* "Aster alpinus" — alpine aster
* "Baccharis halimifolia" — eastern baccharis
* "Balsamorhiza deltoidea" — deltoid balsamroot
* "Balsamorhiza sagittata" — arrowleaf balsamroot
* "Bidens amplissima" — Vancouver Island beggarticks
* "Bidens cernua" — nodding beggarticks
* "Bidens connata" — purplestem beggarticks
* "Bidens coronata" — tickseed sunflower
* "Bidens discoidea" — swamp beggarticks
* "Bidens eatonii" — Eaton's beggarticks
* "Bidens frondosa" — Devil's beggarticks
* "Bidens heterodoxa" — Connecticut beggarticks
* "Bidens hyperborea" — estuary beggarticks
* "Bidens tripartita" — three-lobe beggarticks
* "Bidens vulgata" — tall bur-marigold
* "Boltonia asteroides" — aster-like boltonia
* "Brickellia grandiflora" — tassel flower
* "Brickellia oblongifolia" — narrowleaf brickell-bush
* "Cacaliopsis nardosmia" — silver-crown
* "Canadanthus modestus" — great northern aster
* "Chaenactis douglasii" — hoary pincushion
* "Chrysothamnus viscidiflorus" — sticky-leaf rabbitbrush
* "Cirsium brevistylum" — shortstyle thistle
* "Cirsium canescens" — prairie thistle
* "Cirsium discolor" — field thistle
* "Cirsium drummondii" — Drummond's thistle
* "Cirsium edule" — edible thistle
* "Cirsium flodmanii" — Flodman's thistle
* "Cirsium foliosum" — leafy thistle
* "Cirsium hillii" — Hill's thistle
* "Cirsium hookerianum" — Hooker's thistle
* "Cirsium muticum" — swamp thistle
* "Cirsium pitcheri" — dune thistle
* "Cirsium scariosum"
* "Cirsium undulatum" — nodding thistle
* "Cirsium x vancouverense"
* "Conyza canadensis" — Canada horseweed
* "Coreopsis lanceolata" — sand coreopsis
* "Coreopsis rosea" — rose coreopsis
* "Coreopsis tinctoria" — golden tickseed
* "Coreopsis tripteris" — tall tickseed
* "Crepis atribarba" — slender hawk's-beard
* "Crepis elegans" — elegant hawk's-beard
* "Crepis intermedia" — smallflower hawk's-beard
* "Crepis modocensis" — Siskiyou hawk's-beard
* "Crepis nana" — dwarf alpine hawk's-beard
* "Crepis occidentalis" — grey hawk's-beard
* "Crepis runcinata" — nakedstem hawk's-beard
* "Crocidium multicaule" — common spring-gold
* "Dendranthema arcticum" — arctic daisy
* "Doellingeria umbellata" — flat-top white aster
* "Echinacea angustifolia" — narrow-leaved purple coneflower
* "Echinacea pallida" — pale purple coneflower
* "Eclipta prostrata" — false daisy
* "Erechtites hieraciifolia" — fireweed
* "Ericameria nauseosa" — rubber rabbitbrush
* "Erigeron acris" — bitter fleabane
* "Erigeron alpiniformis" — alpine fleabane
* "Erigeron annuus" — whitetop fleabane
* "Erigeron asper" — rough fleabane
* "Erigeron aureus" — alpine yellow fleabane
* "Erigeron borealis" — boreal fleabane
* "Erigeron caespitosus" — cæspitose fleabane
* "Erigeron compositus" — dwarf mountain fleabane
* "Erigeron corymbosus" — longleaf fleabane
* "Erigeron divergens" — spreading fleabane
* "Erigeron elatus" — tall bitter fleabane
* "Erigeron evermannii" — Evermann's fleabane
* "Erigeron filifolius" — threadleaf fleabane
* "Erigeron flagellaris" — running fleabane
* "Erigeron formosissimus" — beautiful fleabane
* "Erigeron glabellus" — smooth fleabane
* "Erigeron grandiflorus" — largeflower fleabane
* "Erigeron humilis" — low fleabane
* "Erigeron hyperboreus" — hyperboreal fleabane
* "Erigeron hyssopifolius" — daisy fleabane
* "Erigeron lackschewitzii" — front range fleabane
* "Erigeron lanatus" — woolly fleabane
* "Erigeron leibergii" — Leiberg's fleabane
* "Erigeron linearis" — linearleaf fleabane
* "Erigeron lonchophyllus" — short-ray fleabane
* "Erigeron mexiae" — Mex' fleabane
* "Erigeron ochroleucus" — buff fleabane
* "Erigeron pallens" — pale fleabane
* "Erigeron peregrinus" — foreign fleabane
* "Erigeron philadelphicus" — Philadelphia fleabane
* "Erigeron poliospermus" — hairyseed fleabane
* "Erigeron pulchellus" — robin's-plantain
* "Erigeron pumilus" — shaggy fleabane
* "Erigeron purpuratus" — purple fleabane
* "Erigeron radicatus" — tap-rooted fleabane
* "Erigeron salishii" — Salish's daisy
* "Erigeron scotteri" — Scotter's fleabane
* "Erigeron speciosus" — Aspen fleabane
* "Erigeron strigosus" — daisy fleabane
* "Erigeron subtrinervis" — three-nerve fleabane
* "Erigeron uniflorus" — one-flower fleabane
* "Erigeron x arthurii"
* "Erigeron yukonensis" — Yukon fleabane
* "Eriophyllum lanatum" — common woolly-sunflower
* "Eucephalus engelmannii" — Engelmann's aster
* "Eucephalus paucicapitatus" — olympic aster
* "Eupatorium altissimum" — tall boneset
* "Eupatorium dubium" — joe-pye thoroughwort
* "Eupatorium fistulosum" — hollow joe-pyeweed
* "Eupatorium maculatum" — spotted joe-pyeweed
* "Eupatorium perfoliatum" — common boneset
* "Eupatorium purpureum" — sweet joe-pyeweed
* "Eupatorium x truncatum"
* "Eurybia conspicua" — showy aster
* "Eurybia divaricata" — white wood-aster
* "Eurybia macrophylla" — largeleaf wood-aster
* "Eurybia merita" — arctic aster
* "Eurybia pygmaea" — pygmy wood-aster
* "Eurybia radula" — rough wood-aster
* "Eurybia radulina" — roughleaf aster
* "Eurybia schreberi" — Schreiber's aster
* "Eurybia sibirica" — Siberian aster
* "Euthamia caroliniana" — slender fragrant goldenrod
* "Euthamia galetorum" — narrowleaf fragrant goldenrod
* "Euthamia graminifolia" — flat-top fragrant goldenrod
* "Euthamia gymnospermoides" — viscid bushy goldenrod
* "Euthamia occidentalis" — western fragrant goldenrod
* "Gaillardia aristata" — great blanket-flower
* "Gaillardia pulchella" — firewheel blanket-flower
* "Gamochaeta ustulata" — featherweed
* "Gnaphalium obtusifolium" — fragrant cudweed
* "Gnaphalium palustre" — western marsh cudweed
* "Gnaphalium viscosum" — winged cudweed
* "Grindelia hirsutula" — hairy gumweed
* "Grindelia integrifolia" — Puget Sound gumweed
* "Grindelia nana" — Idaho gumweed
* "Grindelia nuda" — curly-top gumweed
* "Grindelia squarrosa" — broadleaf gumweed
* "Grindelia stricta" — Oregon gumweed
* "Gutierrezia sarothrae" — broom snakeweed
* "Helenium autumnale" — common sneezeweed
* "Helianthella uniflora" — Rocky Mountain rockrose
* "Helianthus annuus" — common sunflower
* "Helianthus couplandii" — Coupland's sunflower
* "Helianthus decapetalus" — thin-leaved sunflower
* "Helianthus divaricatus" — woodland sunflower
* "Helianthus giganteus" — tall sunflower
* "Helianthus maximiliani" — Maximillian's sunflower
* "Helianthus nuttallii" — Nuttall's sunflower
* "Helianthus pauciflorus" — stiff sunflower
* "Helianthus petiolaris" — prairie sunflower
* "Helianthus strumosus" — paleleaf sunflower
* "Helianthus tuberosus" — Jerusalem artichoke
* "Helianthus x alexidis"
* "Helianthus x laetiflorus" — hybrid prairie sunflower
* "Helianthus x luxurians"
* "Heliopsis helianthoides" — smooth oxeye
* "Heterotheca villosa" — hairy false goldenaster
* "Hieracium albiflorum" — whiteflower hawkweed
* "Hieracium canadense" — Canada hawkweed
* "Hieracium cynoglossoides" — hound's-tongue hawkweed
* "Hieracium gracile" — alpine hawkweed
* "Hieracium groenlandicum" — Greenland hawkweed
* "Hieracium gronovii" — hairy hawkweed
* "Hieracium kalmii" — Kalm's hawkweed
* "Hieracium laevigatum" — smooth hawkweed
* "Hieracium marianum" — Maryland hawkweed
* "Hieracium paniculatum" — panicled hawkweed
* "Hieracium plicatum" — boreal hawkweed
* "Hieracium robinsonii" — Robinson's hawkweed
* "Hieracium scabrum" — rough hawkweed
* "Hieracium scouleri" — Scouler's hawkweed
* "Hieracium triste" — woolly hawkweed
* "Hieracium umbellatum" — umbellate hawkweed
* "Hieracium venosum" — rattlesnake hawkweed
* "Hieracium x dutillyanum"
* "Hieracium x fassettii"
* "Hieracium x fernaldii"
* "Hieracium x flagellare"
* "Hieracium x grohii"
* "Hieracium x stoloniflorum"
* "Hymenopappus filifolius" — fineleaf woolly-white
* "Hymenoxys richardsonii" — Richardson's bitterweed
* "Ionactis linariifolius" — flaxleaf aster
* "Ionactis stenomeres" — Rocky Mountain aster
* "Iva axillaris" — small-flowered marsh-elder
* "Iva frutescens" — bigleaf marsh-elder
* "Jaumea carnosa" — fleshy jaumea
* "Krigia biflora" — two-flower dwarf-dandelion
* "Krigia virginica" — Virginia dwarf-dandelion
* "Lactuca biennis" — tall blue lettuce
* "Lactuca canadensis" — Canada lettuce
* "Lactuca floridana" — woodland lettuce
* "Lactuca hirsuta" — hairy lettuce
* "Lactuca ludoviciana" — western lettuce
* "Lactuca tatarica" — Tartarian lettuce
* "Lactuca terrae-novae" — Newfoundland lettuce
* "Lasthenia maritima" — maritime goldfields
* "Leucanthemum integrifolium" — entire-leaf daisy
* "Liatris aspera" — tall gayfeather
* "Liatris cylindracea" — slender blazingstar
* "Liatris ligulistylis" — strapstyle gayfeather
* "Liatris punctata" — dotted gayfeather
* "Liatris spheroidea" — spherical gayfeather
* "Liatris spicata" — marsh blazingstar
* "Liatris x creditonensis"
* "Liatris x gladewitzii"
* "Luina hypoleuca" — littleleaf silverback
* "Lygodesmia juncea" — rush skeletonplant
* "Machaeranthera canescens" — hoary tansy-aster
* "Machaeranthera grindelioides" — western aster
* "Machaeranthera pinnatifida" — spiny goldenaster
* "Madia exigua" — little tarweed
* "Madia glomerata" — mountain tarweed
* "Madia gracilis" — grassy tarweed
* "Madia madioides" — woodland tarweed
* "Madia minima" — smallhead tarweed
* "Matricaria discoidea" — pineapple-weed chamomile
* "Megalodonta beckii" — Beck's water-marigold
* "Microseris bigelovii" — coast microseris
* "Microseris borealis" — northern microseris
* "Microseris lindleyi" — Lindley's silverpuffs
* "Microseris nutans" — nodding silverpuffs
* "Mikania scandens" — climbing hempweed
* "Nothocalais cuspidata" — prairie false-dandelion
* "Nothocalais troximoides" — weevil false-dandelion
* "Oclemena acuminata" — whorled aster
* "Oclemena nemoralis" — bog aster
* "Oclemena x blakei" — Blake's aster
* "Oligoneuron album" — prairie goldenrod
* "Oligoneuron houghtonii" — Houghton's goldenrod
* "Oligoneuron ohioense" — Ohio goldenrod
* "Oligoneuron riddellii" — Riddell's goldenrod
* "Oligoneuron rigidum" — stiff goldenrod
* "Oligoneuron x bernardii"
* "Oligoneuron x krotkovii"
* "Oligoneuron x lutescens" — upland aster
* "Oligoneuron x maheuxii"
* "Omalotheca norvegica" — Norwegian cudweed
* "Omalotheca supina" — alpine cudweed
* "Omalotheca sylvatica" — woodland cudweed
* "Packera aurea" — golden ragwort
* "Packera cana" — silvery ragwort
* "Packera contermina" — northwestern groundsel
* "Packera cymbalaria" — dwarf arctic groundsel
* "Packera hyperborealis" — boreal groundsel
* "Packera indecora" — plains ragwort
* "Packera macounii" — Siskiyou Mountains butterweed
* "Packera moresbiensis" — Queen Charlotte groundsel
* "Packera obovata" — roundleaf groundsel
* "Packera ogotorukensis" — Ogotoruk Creek groundsel
* "Packera pauciflora" — few-flower ragwort
* "Packera paupercula" — balsam ragwort
* "Packera plattensis" — prairie ragwort
* "Packera pseudaurea" — western golden groundsel
* "Packera schweinitziana" — Robbin's squawweed
* "Packera streptanthifolia" — cleftleaf ragwort
* "Packera tridenticulata" — three-tooth groundsel
* "Petasites frigidus" — arctic butterbur
* "Petasites sagittatus" — arrowleaf sweet colt's-foot
* "Petasites x vitifolius"
* "Picradeniopsis oppositifolia" — oppositeleaf false bahia
* "Polymnia canadensis" — whiteflower leafcup
* "Prenanthes alata" — western rattlesnake-root
* "Prenanthes alba" — white rattlesnake-root
* "Prenanthes altissima" — tall rattlesnake-root
* "Prenanthes nana" — dwarf rattlesnake-root
* "Prenanthes racemosa" — glaucous rattlesnake-root
* "Prenanthes sagittata" — arrowleaf rattlesnake-root
* "Prenanthes trifoliolata" — three-leaved rattlesnake-root
* "Prenanthes x mainensis"
* "Pseudognaphalium canescens" — Wright's cudweed
* "Psilocarphus brevissimus" — round woolly-heads
* "Psilocarphus elatior" — tall woolly-heads
* "Psilocarphus tenellus" — slender woolly-heads
* "Pyrrocoma carthamoides" — largeflower goldenweed
* "Pyrrocoma lanceolata" — lance-leaved goldenweed
* "Pyrrocoma uniflora" — plantain goldenweed
* "Ratibida columnifera" — upright prairie coneflower
* "Ratibida pinnata" — greyhead prairie coneflower
* "Rudbeckia fulgida" — orange coneflower
* "Rudbeckia hirta" — black-eyed susan
* "Rudbeckia laciniata" — cut-leaved coneflower
* "Saussurea americana" — American saw-wort
* "Saussurea angustifolia" — narrowleaf saw-wort
* "Saussurea densa" — clustered saw-wort
* "Saussurea viscida" — sticky saw-wort
* "Senecio congestus" — marsh ragwort
* "Senecio cymbalarioides" — cleftleaf groundsel
* "Senecio elmeri" — Elmer's ragwort
* "Senecio eremophilus" — desert groundsel
* "Senecio fremontii" — Fremont's ragwort
* "Senecio hydrophiloides" — sweet marsh ragwort
* "Senecio hydrophilus" — great swamp ragwort
* "Senecio integerrimus" — entire-leaf ragwort
* "Senecio lugens" — blacktip groundsel
* "Senecio megacephalus" — Nuttall's ragwort
* "Senecio pseudoarnica" — seabeach groundsel
* "Senecio sheldonensis" — Mount Sheldon groundsel
* "Senecio triangularis" — arrowleaf groundsel
* "Sericocarpus rigidus" — Curtus' aster
* "Shinnersoseris rostrata" — annual skeletonweed
* "Silphium laciniatum" — compass plant
* "Silphium perfoliatum" — cup-plant
* "Silphium terebinthinaceum" — prairie rosinweed
* "Sinosenecio newcombei" — Newcombe's groundsel
* "Solidago altissima" — tall goldenrod
* "Solidago arguta" — cutleaf goldenrod
* "Solidago bicolor" — white goldenrod
* "Solidago caesia" — bluestem goldenrod
* "Solidago calcicola" — rock goldenrod
* "Solidago canadensis" — Canada goldenrod
* "Solidago cutleri" — Cutler's goldenrod
* "Solidago flexicaulis" — broad-leaved goldenrod
* "Solidago gigantea" — smooth goldenrod
* "Solidago hispida" — hairy goldenrod
* "Solidago juncea" — early goldenrod
* "Solidago latissimifolia" — Elliott's goldenrod
* "Solidago macrophylla" — largeleaf goldenrod
* "Solidago missouriensis" — Missouri goldenrod
* "Solidago mollis" — ground goldenrod
* "Solidago multiradiata" — alpine goldenrod
* "Solidago nemoralis" — field goldenrod
* "Solidago patula" — roundleaf goldenrod
* "Solidago puberula" — downy goldenrod
* "Solidago rugosa" — roughleaf goldenrod
* "Solidago sempervirens" — seaside goldenrod
* "Solidago simplex" — sticky goldenrod
* "Solidago speciosa" — showy goldenrod
* "Solidago squarrosa" — squarrose goldenrod
* "Solidago uliginosa" — bog goldenrod
* "Solidago ulmifolia" — elmleaf goldenrod
* "Solidago victorinii" — Victorin's goldenrod
* "Solidago x asperula"
* "Solidago x beaudryi"
* "Solidago x erskinei"
* "Solidago x luteus"
* "Solidago x raymondii"
* "Stenotus acaulis" — stemless mock goldenweed
* "Stenotus armerioides" — thrift mock goldenweed
* "Stenotus macleanii" — MacLean's goldenweed
* "Stephanomeria minor" — narrowleaf skeletonplant
* "Stephanomeria runcinata" — desert skeletonplant
* "Stephanomeria spinosa" — thorny wire-lettuce
* "Symphyotrichum anticostense" — Anticosti aster
* "Symphyotrichum ascendens" — western aster
* "Symphyotrichum boreale" — boreal aster
* "Symphyotrichum campestre" — western meadow-aster
* "Symphyotrichum ciliatum" — alkali American-aster
* "Symphyotrichum ciliolatum" — Lindley's aster
* "Symphyotrichum cordifolium" — heartleaf aster
* "Symphyotrichum dumosum" — bushy aster
* "Symphyotrichum eatonii" — Eaton's aster
* "Symphyotrichum ericoides" — white heath aster
* "Symphyotrichum falcatum" — white prairie aster
* "Symphyotrichum foliaceum" — leafy-bracted aster
* "Symphyotrichum frondosum" — alkali aster
* "Symphyotrichum hendersonii" — Henderson's American-aster
* "Symphyotrichum laeve" — smooth blue aster
* "Symphyotrichum lanceolatum" — panicled aster
* "Symphyotrichum lateriflorum" — starved aster
* "Symphyotrichum laurentianum" — St. Lawrence aster
* "Symphyotrichum novae-angliae" — New England aster
* "Symphyotrichum novi-belgii" — longleaf aster
* "Symphyotrichum ontarionis" — Ontario aster
* "Symphyotrichum oolentangiense" — sky blue aster
* "Symphyotrichum pilosum" — white heath aster
* "Symphyotrichum praealtum" — willow aster
* "Symphyotrichum prenanthoides" — crooked-stem aster
* "Symphyotrichum puniceum" — swamp aster
* "Symphyotrichum racemosum" — small white aster
* "Symphyotrichum robynsianum" — Robyns' American-aster
* "Symphyotrichum sericeum" — western silvery aster
* "Symphyotrichum shortii" — Short's aster
* "Symphyotrichum spathulatum" — western mountain aster
* "Symphyotrichum subspicatum" — Douglas' aster
* "Symphyotrichum subulatum" — annual saltmarsh aster
* "Symphyotrichum tradescantii" — Tradescant's aster
* "Symphyotrichum undulatum" — wavyleaf aster
* "Symphyotrichum urophyllum" — white-arrow aster
* "Symphyotrichum x amethystinum"
* "Symphyotrichum yukonense" — Yukon aster
* "Tanacetum bipinnatum" — Lake Huron tansy
* "Taraxacum carneocoloratum" — pink dandelion
* "Taraxacum eriophorum" — wool-bearing dandelion
* "Taraxacum lyratum" — alpine dandelion
* "Taraxacum officinale" — common dandelion
* "Taraxacum phymatocarpum" — northern dandelion
* "Tephroseris atropurpurea" — dark purple groundsel
* "Tephroseris kjellmanii" — Kjellman's squawweed
* "Tephroseris lindstroemii" — twice-hairy groundsel
* "Tephroseris yukonensis" — Yukon groundsel
* "Tetradymia canescens" — grey horsebrush
* "Tetraneuris acaulis" — stemless four-nerve daisy
* "Tetraneuris herbacea" — lakeside daisy
* "Thelesperma subnudum" — border goldthread
* "Tonestus lyallii" — Lyall's haplopappus
* "Townsendia condensata" — cushion townsend-daisy
* "Townsendia exscapa" — silky townsend-daisy
* "Townsendia hookeri" — Hooker's townsend-daisy
* "Townsendia parryi" — Parry's townsend-daisy
* "Tripleurospermum maritima" — false chamomile
* "Verbesina alternifolia" — wingstem
* "Vernonia fasciculata" — fascicled ironweed
* "Vernonia gigantea" — giant ironweed
* "Vernonia missurica" — Missouri ironweed
* "Xanthium strumarium" — rough cocklebur

Aulacomniaceae

* "Aulacomnium acuminatum" — acutetip aulacomnium moss
* "Aulacomnium androgynum"
* "Aulacomnium heterostichum"
* "Aulacomnium palustre" — aulacomnium moss
* "Aulacomnium turgidum"

Aytoniaceae

* "Asterella gracilis"
* "Asterella lindenbergiana"
* "Asterella saccata"
* "Asterella tenella"
* "Mannia fragrans"
* "Mannia pilosa"
* "Mannia sibirica"
* "Mannia triandra"
* "Reboulia hemisphaerica"

Azollaceae

* "Azolla caroliniana" — eastern mosquito-fern
* "Azolla mexicana" — Mexican mosquito-fern