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List of Canadian plants by family This is the list of the plants in Canada, ordered by Family (biology), family. This list does not include List of introduced species to North America, introduced species, which form a separate list. {{Dynamic list Families: List of Canadian plan ...

Families: 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

Acanthaceae Acanthaceae is a family (the acanthus family) of dicotyledonous flowering plants containing almost 250 genera and about 2500 species. Most are tropical herbs, shrubs, or twining vines; some are epiphytes. Only a few species are distributed in te ...

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Justicia americana ''Justicia americana'', the American water-willow, is a herbaceous, aquatic flowering plant in the family Acanthaceae native to North America. It is the hardiest species in the genus '' Justicia'', the other members of which being largely tropic ...

'' — common water-willow

Aceraceae Aceraceae were recognized as a family of flowering plants also called the maple family. They contain two to four genera, depending upon the circumscription, of some 120 species of trees and shrubs. A common characteristic is that the leaves are ...

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Acer circinatum ''Acer circinatum'', the vine maple, is a species of maple native to western North America. Description It most commonly grows as a large shrub growing to around tall, but it will occasionally form a small to medium-sized tree, exceptionally ...

'' — vine maple * ''

Acer glabrum ''Acer glabrum'' is a species of maple native to western North America, from southeastern Alaska, British Columbia and western Alberta, east to western Nebraska, and south through Washington, Oregon, Idaho, Montana and Colorado to California, Ar ...

'' — Douglas maple * ''

Acer macrophyllum ''Acer macrophyllum'', the bigleaf maple or Oregon maple, is a large deciduous tree in the genus '' Acer''. It is native to western North America, mostly near the Pacific coast, from southernmost Alaska to southern California. Some stands are al ...

'' — bigleaf maple * ''

Acer negundo ''Acer negundo'', the box elder, boxelder maple, Manitoba maple or ash-leaved maple, is a species of maple native to North America. It is a fast-growing, short-lived tree with opposite, compound leaves. It is sometimes considered a weedy or inv ...

'' — box-elder * ''

Acer nigrum ''Acer nigrum'', the black maple, is a species of maple closely related to '' A. saccharum'' (sugar maple), and treated by some authors as a subspecies of it, as ''Acer saccharum'' subsp. ''nigrum''. Identification can be confusing due to the ...

'' — black maple * '' Acer pensylvanicum'' — striped maple * ''

Acer rubrum ''Acer rubrum'', the red maple, also known as swamp maple, water maple, or soft maple, is one of the most common and widespread deciduous trees of eastern and central North America. The U.S. Forest Service recognizes it as the most abundant nati ...

'' — red maple * ''

Acer saccharinum ''Acer saccharinum'', commonly known as silver maple, creek maple, silverleaf maple, soft maple, large maple, water maple, swamp maple, or white maple, is a species of maple native to the eastern and central United States and southeastern Canad ...

'' — silver maple * ''

Acer saccharum ''Acer saccharum'', the sugar maple, is a species of flowering plant in the soapberry and lychee family Sapindaceae. It is native to the hardwood forests of eastern Canada and eastern United States. Sugar maple is best known for being the prima ...

'' — sugar maple * ''

Acer spicatum ''Acer spicatum'', the mountain maple, dwarf maple, moose maple, or white maple, is a species of maple native to northeastern North America from Saskatchewan to Newfoundland, and south to Pennsylvania. It also grows at high elevations in the sout ...

'' — mountain maple * '' Acer × freemanii'' — Freeman's maple

Acoraceae ''Acorus'' is a genus of monocot flowering plants. This genus was once placed within the family Araceae (aroids), but more recent classifications place it in its own family Acoraceae and order Acorales, of which it is the sole genus of the oldes ...

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Acorus americanus ''Acorus americanus'', the American sweet flag, is an emergent wetland plant native to the northern United States and Canada. This perennial plant has bright green blade-shaped leaves that arise directly from the rhizomes and sheath into each ot ...

'' — sweetflag

Adelanthaceae Adelanthaceae is a family of liverworts belonging to the order Jungermanniales Jungermanniales is the largest order of liverworts. They are distinctive among the liverworts for having thin leaf-like flaps on either side of the stem. Most other l ...

* '' Odontoschisma denudatum'' * '' Odontoschisma elongatum'' * '' Odontoschisma gibbsiae'' * '' Odontoschisma macounii'' * '' Odontoschisma sphagni''

Adoxaceae Adoxaceae, commonly known as moschatel family, is a small family of flowering plants in the order Dipsacales, now consisting of five genera and about 150–200 species. They are characterised by opposite toothed leaves, small five- or, more rare ...

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Adoxa moschatellina ''Adoxa moschatellina'', the moschatel, five-faced bishop, hollowroot, muskroot, townhall clock, tuberous crowfoot or Good Friday plant, is a species of flowering plant in the family Adoxaceae. This herbaceous perennial has a holarctic distribut ...

'' — muskroot * ''

Viburnum acerifolium ''Viburnum acerifolium'', the mapleleaf viburnum, maple-leaved arrowwood or dockmackie, is a species of ''Viburnum'', native to eastern North America from southwestern Quebec and Ontario south to northern Florida and eastern Texas. It is adapted ...

'' — mapleleaf viburnum * ''

Viburnum edule ''Viburnum edule'', the squashberry, mooseberry, moosomin, moosewood viburnum, pembina, pimina, highbush cranberry, or lowbush cranberry is a species of shrub native to Canada and the northern parts of the US. It stands roughly 2 m (6.5 ft) tall w ...

'' — squashberry * ''

Viburnum lantanoides ''Viburnum lantanoides'' (commonly known as hobble-bush, witch-hobble, alder-leaved viburnum, American wayfaring tree, and moosewood) is a perennial shrub of the family Adoxaceae (formerly in the Caprifoliaceae), growing 2–4 meters (6–12&nbs ...

'' — alderleaf viburnum * ''

Viburnum lentago ''Viburnum lentago'', the nannyberry, sheepberry, or sweet viburnum, is a species of ''Viburnum'' native to North America. Description It is a large shrub or small tree growing upwards to tall with a trunk up to in diameter and a short trun ...

'' — nannyberry * '' Viburnum nudum'' — possum-haw viburnum * ''

Viburnum opulus ''Viburnum opulus'', the guelder-rose or guelder rose () is a species of flowering plant in the family (biology), family Adoxaceae (formerly Caprifoliaceae) native plant, native to Europe, northern Africa and central Asia. Description ''Viburn ...

'' — guelder-rose viburnum * ''

Viburnum rafinesquianum ''Viburnum rafinesqueanum'', the downy arrowwood, is a deciduous medium-sized (typically about 2 meters tall) shrub native to the Eastern United States and Canada from Quebec and Manitoba south to Georgia and west to Oklahoma. Downy arrow-wood p ...

'' — downy arrowwood * ''

Viburnum recognitum ''Viburnum recognitum'', variously called the northern arrowwood, southern arrowwood, and smooth arrow-wood, is a species of flowering plant in the family Viburnaceae. It is native to eastern Canada, and the central and eastern United States. A s ...

'' — northern arrowwood

Agavaceae Agavoideae is a subfamily of monocot flowering plants in the family Asparagaceae, order Asparagales. It has previously been treated as a separate family, Agavaceae. The group includes many well-known desert and dry-zone types, such as the agav ...

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Yucca filamentosa ''Yucca filamentosa'', Adam’s needle and thread, is a species of flowering plant in the family Asparagaceae native to the southeastern United States. Growing to tall, it is an evergreen shrub valued in horticulture. Description Usually trun ...

'' — common yucca * ''

Yucca glauca ''Yucca glauca'' ( syn. ''Yucca angustifolia'') is a species of perennial evergreen plant, adapted to xeric (dry)growth conditions. It is also known as small soapweed, soapweed yucca, Spanish bayonet, and Great Plains yucca. ''Yucca glauca'' f ...

'' — small soapweed yucca

Alismataceae The water-plantains (Alismataceae) are a family of flowering plants, comprising 19 genera (17 extant and 2 fossil) and 117 species. The family has a cosmopolitan distribution, with the greatest number of species in temperate regions of the Northe ...

* '' Alisma gramineum'' — narrowleaf water-plantain * ''

Alisma subcordatum ''Alisma subcordatum'', the American water plantain, is a perennial aquatic plant in the water-plantain family (Alismataceae). This plant grows to about 3 feet (1 meter) in height with lance to oval shaped leaves rising from bulbous corms with ...

'' — broad-leaved water-plantain * ''

Alisma triviale ''Alisma triviale'', the northern water plantain, is a perennial semi- aquatic or aquatic plant in the water-plantain family (Alismataceae). Description It is a perennial herb that ranges in height from 1-3 ft. Each plant has long-petioled, l ...

'' — northern water-plantain * '' Sagittaria brevirostra'' — short-beaked arrowhead * '' Sagittaria calycina'' — longlobe arrowhead * '' Sagittaria cristata'' — crested arrowhead * '' Sagittaria cuneata'' — Wapatum arrowhead * ''

Sagittaria graminea ''Sagittaria graminea'', the grassy arrowhead or grass-leaved arrowhead, is an aquatic plant species native to eastern North America. Description It is a perennial herb up to tall with narrow, grass-like leaves about in length and wide. A ...

'' — grassleaf arrowhead * ''

Sagittaria latifolia ''Sagittaria latifolia'' is a plant found in shallow wetlands and is sometimes known as broadleaf arrowhead, duck-potato, Indian potato, katniss, or wapato. This plant produces edible tubers that have traditionally been extensively used by Nati ...

'' — broadleaf arrowhead * '' Sagittaria rigida'' — sessile-fruit arrowhead

Amaranthaceae Amaranthaceae is a family of flowering plants commonly known as the amaranth family, in reference to its type genus ''Amaranthus''. It includes the former goosefoot family Chenopodiaceae and contains about 165 genera and 2,040 species, making it ...

* '' Amaranthus albus'' — white pigweed * ''

Amaranthus californicus ''Amaranthus californicus'' is a species of flowering plant in the amaranth family known as California amaranth. It is a glabrous monoecious annual that is native to most of the western United States and Canada Canada is a country in ...

'' — California amaranth * '' Amaranthus powellii'' — green amaranth * '' Amaranthus rudis'' — tall amaranth * ''

Amaranthus tuberculatus ''Amaranthus tuberculatus'', commonly known as roughfruit amaranth, rough-fruited water-hemp, tall waterhemp, or common waterhemp, is a species of flowering plant. It is a summer annual broadleaf with a germination period that lasts several mont ...

'' — roughfruit amaranth

Amblystegiaceae Amblystegiaceae is a family of mosses. It includes 20 to 30 genus, genera with a total of up to 150 species.Amblystegium serpens'' — amblystegium moss * '' Amblystegium varium'' * '' Calliergon cordifolium'' — calliergon moss * ''
Calliergon giganteum ''Calliergon giganteum'', the giant spearmoss, giant calliergon moss, or arctic moss, is an aquatic plant found on lake beds in tundra regions. It has no wood stems or flowers, and has small rootlets instead of roots. ''Calliergon giganteum'' su ...
'' — 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 ''Campylium stellatum'' is a species of moss belonging to the family Amblystegiaceae. It has cosmopolitan distribution In biogeography, cosmopolitan distribution is the term for the range of a taxon that extends across all or most of the w ...
'' — 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 exannulata'' is a leafy branching wetland moss in the genus '' Warnstorfia'' within the family Amblystegiaceae and class Bryopsida. This bryopsida moss is also known as ringless-hook moss or Warnstorfia moss. It is the most common spe ...
'' — warnstorfia moss * '' Warnstorfia fluitans'' — warnstorfia moss * '' Warnstorfia procera'' * '' Warnstorfia pseudostraminea'' * '' Warnstorfia trichophylla'' * '' Warnstorfia tundrae''

Anacardiaceae The Anacardiaceae, commonly known as the cashew family or sumac family, are a family of flowering plants, including about 83 genera with about 860 known species. Members of the Anacardiaceae bear fruits that are drupes and in some cases produce ...

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Rhus aromatica ''Rhus aromatica'', the fragrant sumac, is a deciduous shrub in the family Anacardiaceae native to North America.(1) (2) It is found in southern Canada (Alberta to Quebec) and nearly all of the lower 48 states except peninsular Florida. Fragr ...
'' — fragrant sumac * ''
Rhus copallinum ''Rhus copallinum'' (''Rhus copallina'' is also used but, this is not consistent with the rules of the International Association for Plant Taxonomy), the winged sumac, shining sumac, dwarf sumac or flameleaf sumac, is a species of flowering pl ...
'' — winged sumac * ''
Rhus glabra ''Rhus glabra'', the smooth sumac, (also known as white sumac, upland sumac, or scarlet sumac) is a species of sumac in the family Anacardiaceae, native to North America, from southern Quebec west to southern British Columbia in Canada, and so ...
'' — smooth sumac * ''
Rhus trilobata ''Rhus trilobata'' is a shrub in the sumac genus ('' Rhus'') with the common names skunkbush sumac, sourberry, skunkbush, and three-leaf sumac. It is native to the western half of Canada and the Western United States, from the Great Plains to ...
'' — skunkbush * ''
Rhus typhina ''Rhus typhina'', the staghorn sumac, is a species of flowering plant in the family Anacardiaceae, native to eastern North America. It is primarily found in southeastern Canada, the northeastern and midwestern United States, and the Appalachian M ...
'' — staghorn sumac * '' Rhus × pulvinata'' * ''
Toxicodendron diversilobum ''Toxicodendron diversilobum'' (syn. ''Rhus diversiloba''), commonly named Pacific poison oak or western poison oak, is a woody vine or shrub in the sumac family, Anacardiaceae. It is widely distributed in western North America, inhabiting coni ...
'' — western poison-oak * ''
Toxicodendron radicans ''Toxicodendron radicans'', commonly known as eastern poison ivy or poison ivy, is an allergenic Asian and Eastern North American flowering plant in the genus ''Toxicodendron''. The species is well known for causing urushiol-induced contact derm ...
'' — eastern poison-ivy * ''
Toxicodendron rydbergii ''Toxicodendron rydbergii'', the western poison ivy, is a species of ''Toxicodendron'' in the cashew family. It is native to most of Canada from the Maritimes to British Columbia, and most of the contiguous United States except the southeas ...
'' — northern poison-oak * ''
Toxicodendron vernix ''Toxicodendron vernix'', commonly known as poison sumac, or swamp-sumach, is a woody shrub or small tree growing to 9 metres (30 feet) tall. It was previously known as ''Rhus vernix''. This plant is also known as thunderwood, particul ...
'' — poison-sumac

Andreaeaceae Andreaeaceae is a family of mosses which includes two genera, ''Andreaea'', containing about 100 species, and the genus ''Acroschisma''. The Andreaeaceae prefer rocky habitats ranging from tropical to arctic climates, on which they form tufted c ...

* '' Andreaea alpestris'' * '' Andreaea blyttii'' * '' Andreaea crassinervia'' * '' Andreaea heinemannii'' * '' Andreaea megistospora'' * '' Andreaea mutabilis'' * '' Andreaea nivalis'' * '' Andreaea obovata'' * '' Andreaea rothii'' * ''
Andreaea rupestris ''Andreaea rupestris'' is a species of moss Mosses are small, non-vascular flowerless plants in the taxonomic division Bryophyta (, ) '' sensu stricto''. Bryophyta ('' sensu lato'', Schimp. 1879) may also refer to the parent group bryop ...
'' * '' Andreaea schofieldiana'' * '' Andreaea sinuosa''

Andreaeobryaceae
* '' Andreaeobryum macrosporum''

Aneuraceae Aneuraceae (sometimes Riccardiaceae) is a family of thallose liverworts in the order Metzgeriales. Most species are very small with narrow, branching thalli. Taxonomy Aneuraceae is the largest family in the order Metzgeriales, simple thalloid ...

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Aneura pinguis ''Aneura pinguis'' is a species of liverworts belonging to the family Aneuraceae. It has a cosmopolitan distribution. References
{{Taxonbar, from=Q1409249 Metzgeriales ...
'' * '' Riccardia chamedryfolia'' * '' Riccardia latifrons'' * '' Riccardia multifida'' — comb liverwort * '' Riccardia palmata''

Annonaceae The Annonaceae are a Family (biology), family of flowering plants consisting of trees, shrubs, or rarely lianas commonly known as the custard apple family or soursop family. With 108 accepted genera and about 2400 known species, it is the largest ...

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Asimina triloba ''Asimina triloba'', the American papaw, pawpaw, paw paw, or paw-paw, among many regional names, is a small deciduous tree native to the eastern United States and Canada, producing a large, yellowish-green to brown fruit. ''Asimina'' is the onl ...
'' — pawpaw

Anomodontaceae
* '' Anomodon attenuatus'' * '' Anomodon minor'' * '' Anomodon rostratus'' * '' Anomodon rugelii'' * '' Anomodon viticulosus'' * '' Haplohymenium triste'' * '' Pterogonium gracile''

Antheliaceae
* '' Anthelia julacea'' * '' Anthelia juratzkana''

Anthocerotaceae The Anthocerotaceae is the only family Family (from la, familia) is a group of people related either by consanguinity (by recognized birth) or affinity (by marriage or other relationship). The purpose of the family is to maintain the well ...

* '' Anthoceros agrestis'' * '' Anthoceros fusiformis'' * '' Anthoceros macounii''

Apiaceae Apiaceae or Umbelliferae is a family of mostly aromatic flowering plants named after the type genus ''Apium'' and commonly known as the celery, carrot or parsley family, or simply as umbellifers. It is the 16th-largest family of flowering plants ...

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Angelica archangelica ''Angelica archangelica'', commonly known as garden angelica, wild celery, and Norwegian angelica, is a biennial plant from the family Apiaceae, a subspecies of which is cultivated for its sweetly scented edible stems and roots. Like several oth ...
'' — Norwegian angelica * ''
Angelica arguta ''Angelica arguta'' is a species of angelica known as Lyall's angelica. It is native to western North America, where it grows in coniferous forests from British Columbia to Utah. This is a taprooted perennial herb growing an erect, hollow stem to ...
'' — Lyall's angelica * ''
Angelica atropurpurea ''Angelica atropurpurea'', known commonly as purplestem angelica, great angelica, American angelica, high angelica, and masterwort,Angelica dawsonii ''Angelica'' is a genus of about 60 species of tall Biennial plant, biennial and Perennial plant, perennial herbaceous, herbs in the family Apiaceae, native to temperate and subarctic regions of the Northern Hemisphere, reaching as far north as ...
'' — Dawson's angelica * '' Angelica genuflexa'' — kneeling angelica * '' Angelica laurentiana'' — St. Lawrence angelica * '' Angelica lucida'' — seacoast angelica * ''
Angelica venenosa ''Angelica venenosa'' is a species of plant known as hairy angelica. It is native to the Eastern United States where it ranges from the East Coast to the Ouachita Mountains. It is most often found in open, acidic areas. In the Midwest, its habita ...
'' — hairy angelica * ''
Berula erecta ''Berula erecta'', known as lesser water-parsnip or cutleaf waterparsnip or narrow-leaved water-parsnip, is a member of the Apiaceae, carrot family. Growing to around tall, it is found in or by water. It is widespread across much of Europe, Asia ...
'' — wild parsnip * ''
Bupleurum americanum ''Bupleurum'' is a large genus of annual or perennial herbs or woody shrubs, with about 190 species, belonging to the family Apiaceae. The full size of its species may vary between a few cm to up to 3 m high. Their compound umbels of sm ...
'' — American thorowax * ''
Chaerophyllum procumbens ''Chaerophyllum procumbens'', known by the common names spreading chervil and wild chervil, is an annual forb native to the eastern United States and Canada, USDA, NRCS. 2014. The PLANTS Database (http://plants.usda.gov). National Plant Data Tea ...
'' — spreading chervil * ''
Chaerophyllum tainturieri ''Chaerophyllum tainturieri'', known by the common names hairyfruit chervil and southern chervil, is an annual forb native to the south-eastern United States, with disjunct populations in Arizona and New Mexico ) , population_demonym = New ...
'' — Tainturier's chervil * ''
Cicuta bulbifera ''Cicuta bulbifera'', commonly known as the bulb-bearing water-hemlock, is a plant native to North America and one of four species in the poisonous genus ''Cicuta''. Tiny bulbils form in the leaf joints in the upper part of the plant, giving the ...
'' — bulb-bearing water-hemlock * ''
Cicuta douglasii ''Cicuta douglasii'', the western water hemlock, is a very poisonous perennial plant in the family Apiaceae. Description The plant's roots are thick and tuberous, with many smaller tubers on the main one, allowing survival in wet conditions. ...
'' — western water-hemlock * ''
Cicuta maculata ''Cicuta maculata'' is a highly poisonous species of flowering plant in the carrot family known by several common names, including spotted water hemlock, spotted parsley, spotted cowbane, and the suicide root by the Iroquois. It is native to nea ...
'' — spotted water-hemlock * ''
Cicuta virosa ''Cicuta virosa'', the cowbane or northern water hemlock, is a poisonous species of ''Cicuta'', native to northern and central Europe, northern Asia and northwestern North America. Description It is a perennial herbaceous plant which grows up ...
'' — MacKenzie's water-hemlock * ''
Cnidium cnidiifolium ''Cnidium cnidiifolium'' is a species of flowering plant in the parsley family, Apiaceae. Its common names include northern hemlock-parsley and Jakutsk snowparsley, after the Russian town Jakutsk. It is native to Russia, Alaska, and the Northwes ...
'' — Jakutsk snow parsley * ''
Conioselinum chinense ''Conioselinum'' is a genus of flowering plant in the family Apiaceae, native to Eurasia and North America. Its species are erect perennial plants with deeply toothed compound leaves and umbels of white flowers. Plants of this genus are known com ...
'' — Chinese hemlock-parsley * '' Conioselinum gmelinii'' — western hemlock-parsley * ''
Cryptotaenia canadensis ''Cryptotaenia canadensis'', the Canadian honewort, is a perennial plant species native to the eastern United States and eastern Canada. Its young leaves and stems can be used as a boiled green or seasoning similar to parsley. The parsnip ...
'' — Canada honewort * ''
Cymopterus acaulis '' Cymopterus glomeratus '' (Fendler's spring-parsley, Fendler's cymopterus, plains springparsley), now including ''Cymopterus acaulis'', is a flowering plant. This plant is an aromatic plant of the family Apiaceae Apiaceae or Umbelliferae i ...
'' — plains wavewing * ''
Daucus pusillus ''Daucus pusillus'' is a species of wild carrot known by the common names American wild carrot and rattle-snake-weed. Its Latin name means "little carrot", or "tiny carrot". It is similar in appearance to other species and subspecies of wild carr ...
'' — southwestern carrot * '' Erigenia bulbosa'' — harbinger-of-spring * '' Glehnia littoralis'' — American glehnia * ''
Heracleum maximum ''Heracleum maximum'', commonly known as cow parsnip, is the only member of the genus '' Heracleum'' native to North America. It is also known as American cow-parsnip, Satan celery, Indian celery, Indian rhubarb or pushki. Description Cow p ...
'' — cow-parsnip * ''
Hydrocotyle americana ''Hydrocotyle americana'' is a small plant native to the Northeastern United States. It is commonly referred to as American marshpennywort or navelwort and American water-pennywort. ''H. americana'' grows from Ontario to Newfoundland south thr ...
'' — American water-pennywort * ''
Hydrocotyle umbellata ''Hydrocotyle umbellata'' is an aquatic plant that thrives in wet, sandy habitat. Its English common name is manyflower marshpennywort or dollarweed. It is native to North America and parts of South America. In Brazil it is known as acariçoba a ...
'' — many-flowered pennywort * '' Hydrocotyle verticillata'' — whorled pennywort * '' Ligusticum calderi'' — Calder's lovage * '' Ligusticum canbyi'' — Canby's wild lovage * ''
Ligusticum scoticum ''Ligusticum scoticum'', known as Scots lovage, or Scottish licorice-root, is a perennial flowering plant in the celery family Apiaceae (previously Umbelliferae) found near the coasts of northern Europe and north-eastern North America. It grows u ...
'' — Scotch lovage * '' Ligusticum verticillatum'' — Idaho lovage * '' Lilaeopsis chinensis'' — eastern lilæopsis * '' Lilaeopsis occidentalis'' — western lilæopsis * '' Lomatium ambiguum'' — streambank desert-parsley * ''
Lomatium brandegeei ''Lomatium brandegeei'', also known as Brandegee's desert-parsley is a perennial herb of the family Apiaceae that grows in northern Washington and into British Columbia. Compound umbels with yellow flowers appear from May to June. It has a relati ...
'' — Brandegee's desert-parsley * ''
Lomatium cous ''Lomatium cous'' (cous biscuitroot) is a perennial herb of the family Apiaceae. The root is prized as a food by the tribes of the southern plateau of the Pacific Northwest. Meriwether Lewis collected a specimen in 1806 while on his expedition.Sc ...
'' — 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 ''Lomatium utriculatum'' is a species of flowering plant in the carrot family known by the common name common lomatium or spring gold. It is native to western North America from British Columbia to California, where it grows in many types of hab ...
'' — 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 ''Perideridia gairdneri'' is a species of flowering plant in the family Apiaceae known by the common names common yampah, Gardner's yampah and Squaw root. It is native to western North America from southwestern Canada to California to New Mexico, ...
'' — 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 ''Sium suave'', the water parsnip or hemlock waterparsnip, is a perennial wildflower in the family Apiaceae. It is native to many areas of both Asia and North America. The common name water parsnip is due to its similarity to parsnip (''Pastinaca ...
'' — hemlock water-parsnip * '' Taenidia integerrima'' — yellow pimpernel * '' Thaspium barbinode'' — hairyjoint meadow-parsnip * '' Thaspium trifoliatum'' — purple meadow-parsnip * '' Yabea microcarpa'' — California hedge-parsley * ''
Zizia aptera ''Zizia aptera'' is a flowering plant native to North America. Its common names include meadow zizia, golden alexanders, heart leaved golden alexanders, and prairie golden alexanders. Description The leaves are long, ovate and indented at the ...
'' — golden alexanders * ''
Zizia aurea ''Zizia aurea'' (golden alexanders, golden zizia) is a flowering herbaceous perennial plant of the carrot family Apiaceae. It is native to eastern Canada and the United States, from the eastern Great Plains to the Atlantic Coast. It is named f ...
'' — common alexanders

Apocynaceae Apocynaceae (from ''Apocynum'', Greek for "dog-away") is a family of flowering plants that includes trees, shrubs, herbs, stem succulents, and vines, commonly known as the dogbane family, because some taxa were used as dog poison Members of the ...

* ''
Apocynum androsaemifolium ''Apocynum androsaemifolium'', the fly-trap dogbane or spreading dogbane, is a flowering plant in the Gentianales order. It is common in North America. Description ''Apocynum androsaemifolium'' is a perennial herb with branching stems, hairs o ...
'' — spreading dogbane * ''
Apocynum cannabinum ''Apocynum cannabinum'' (dogbane, amy root, hemp dogbane, prairie dogbane, Indian hemp, rheumatism root, or wild cotton) is a perennial herbaceous plant that grows throughout much of North America—in the southern half of Canada and throughou ...
'' — clasping-leaf dogbane * ''
Apocynum × floribundum ''Apocynum'' × ''floribundum'', the intermediate dogbane, is a member of the family Apocynaceae. It is widespread across Canada, the United States, and northern Mexico.Larson, J., Reif, B., Nelson, B.E. & Hartman, R.L. (2014). Floristic studies ...
'' — hybrid dogbane

Aquifoliaceae ''Ilex'' (), or holly, is a genus of over 570 species of flowering plants in the family Aquifoliaceae, and the only living genus in that family. ''Ilex'' has the most species of any woody dioecious angiosperm genus. The species are evergree ...

* ''
Ilex glabra ''Ilex glabra'', also known as Appalachian tea, dye-leaves, evergreen winterberry, gallberry, and inkberry, is a species of evergreen holly native to the coastal plain of eastern North America, from coastal Nova Scotia to Florida and west to Lo ...
'' — ink-berry * ''
Ilex verticillata ''Ilex verticillata'', the winterberry, is a species of holly native to eastern North America in the United States and southeast Canada, from Newfoundland west to Ontario and Minnesota, and south to Alabama. Other names that have been used in ...
'' — black holly * '' Nemopanthus mucronatus'' — mountain holly

Araceae The Araceae are a family of monocotyledonous flowering plants in which flowers are borne on a type of inflorescence called a spadix. The spadix is usually accompanied by, and sometimes partially enclosed in, a spathe (or leaf-like bract). Also ...

* '' Arisaema dracontium'' — green dragon * ''
Arisaema triphyllum ''Arisaema triphyllum'', the jack-in-the-pulpit, bog onion, brown dragon or Indian turnip, is a herbaceous perennial plant growing from a corm. It is a highly variable species typically growing in height with three-part leaves and flowers conta ...
'' — swamp Jack-in-the-pulpit * ''
Calla palustris ''Calla'' (bog arum, marsh calla, wild calla, squaw claw, and water-arumDickinson, T.; Metsger, D.; Bull, J.; & Dickinson, R. (2004) ROM Field Guide to Wildflowers of Ontario. Toronto:Royal Ontario Museum, p. 62.) is a genus of flowering plant i ...
'' — wild calla * ''
Lysichiton americanus ''Lysichiton americanus'', also called western skunk cabbage (US), yellow skunk cabbage (UK), American skunk-cabbage (Britain and Ireland) or swamp lantern, is a plant found in swamps and wet woods, along streams and in other wet areas of the Pac ...
'' — yellow skunk-cabbage * ''
Peltandra virginica ''Peltandra virginica'' is a plant of the arum family known as green arrow arum and tuckahoe. It is widely distributed in wetlands in the eastern United States, as well as in Quebec, Ontario, and Cuba.Whigham, Dennis F., Robert L. Simpson and Ma ...
'' — green arrow-arum * '' Symplocarpus foetidus'' — skunk-cabbage

Araliaceae The Araliaceae are a family of flowering plants composed of about 43 genera and around 1500 species consisting of primarily woody plants and some herbaceous plants. The morphology of Araliaceae varies widely, but it is predominantly distinguisha ...

* ''
Aralia hispida ''Aralia hispida'', commonly known as the bristly sarsaparilla, is a member of the family Araliaceae The Araliaceae are a family of flowering plants composed of about 43 genera and around 1500 species consisting of primarily woody plants and ...
'' — bristly sarsaparilla * ''
Aralia nudicaulis ''Aralia nudicaulis'' (commonly wild sarsaparilla,Dickinson, T.; Metsger, G.; Hull, J.; and Dickinson, R. (2004) The ROM Field Guide to Wildflowers of Ontario. Toronto:Royal Ontario Museum, p. 140. false sarsaparilla, shot bush, small spikenard, ...
'' — wild sarsaparilla * '' Aralia racemosa'' — American spikenard * ''
Oplopanax horridus Devil's club or devil's walking stick (''Oplopanax horridus'', Araliaceae; syn. ''Echinopanax horridus'', ''Fatsia horrida'') is a large understory shrub native to the rainforests of the Pacific Northwest, but also disjunct on islands in Lake ...
'' — Devil's-club * ''
Panax quinquefolius American ginseng (''Panax quinquefolius'') is a herbaceous perennial plant in the ivy family, commonly used as an herb in traditional Chinese medicine. It is native to eastern North America, though it is also cultivated in China. Since the 18th ...
'' — American ginseng * ''
Panax trifolius ''Panax trifolius'', commonly called dwarf ginseng, is plant native to the Northeastern and Appalachian regions of North America. It is found in low mesic woods with acidic soils. It produces an umbel of white flowers in late spring. This spe ...
'' — dwarf ginseng

Archidiaceae
* '' Archidium ohioense''

Aristolochiaceae The Aristolochiaceae () are a family, the birthwort family, of flowering plants with seven genera and about 400 known species belonging to the order Piperales. The type genus is ''Aristolochia'' L. Description They are mostly perennial, he ...

* ''
Asarum canadense ''Asarum canadense'', commonly known as Canada wild ginger, Canadian snakeroot, and broad-leaved asarabacca, is a herbaceous, perennial plant which forms dense colonies in the understory of deciduous forests throughout its native range in easte ...
'' — Canada wild-ginger * ''
Asarum caudatum ''Asarum caudatum'' (British Columbia wild ginger, western wild ginger, or long-tailed wild ginger) is a plant native to rich moist forests of western North America. It has heart-shaped leaves and a three-lobed purplish flower. Description Gr ...
'' — long-tailed wild-ginger

Arnelliaceae
* '' Arnellia fennica''

Asclepiadaceae
* '' Asclepias exaltata'' — poke milkweed * '' Asclepias hirtella'' — green milkweed * ''
Asclepias incarnata ''Asclepias incarnata'', the swamp milkweed, rose milkweed, rose milkflower, swamp silkweed, or white Indian hemp, is a herbaceous perennial plant species native to North America. It grows in damp through wet soils and also is cultivated as a ga ...
'' — swamp milkweed * '' Asclepias lanuginosa'' — woolly milkweed * '' Asclepias ovalifolia'' — dwarf milkweed * '' Asclepias purpurascens'' — purple milkweed * ''
Asclepias quadrifolia ''Asclepias quadrifolia'', commonly called four-leaved milkweed or fourleaf milkweed, is a species of milkweed in the Apocynaceae (dogbane) family. It is sometimes referred to as whorled milkweed, but it should not be confused with ''Asclepias ve ...
'' — whorled milkweed * ''
Asclepias speciosa ''Asclepias speciosa'' is a milky-sapped perennial plant in the dogbane family (Apocynaceae), known commonly as the showy milkweed and is found in the western half of North America. Description This flowering plant is a hairy, erect perennial ...
'' — showy milkweed * '' Asclepias sullivantii'' — prairie milkweed * ''
Asclepias syriaca ''Asclepias syriaca'', commonly called common milkweed, butterfly flower, silkweed, silky swallow-wort, and Virginia silkweed, is a species of flowering plant. It is native to southern Canada and much of the United States east of the Rocky Moun ...
'' — Kansas milkweed * ''
Asclepias tuberosa ''Asclepias tuberosa'', commonly known as butterfly weed, is a species of milkweed native to eastern and southwestern North America. It is commonly known as butterfly weed because of the butterflies that are attracted to the plant by its color ...
'' — butterfly milkweed * ''
Asclepias verticillata ''Asclepias verticillata'', the whorled milkweed, eastern whorled milkweed, or horsetail milkweed, is a species of milkweed native to most of eastern North America and parts of western Canada and the United States. Description This is a perenn ...
'' — whorled milkweed * ''
Asclepias viridiflora ''Asclepias viridiflora'', is commonly known as green comet milkweed, green-flower milkweed, and green milkweed. It is a widely distributed species of milkweed (''Asclepias''), known from much of the eastern and central United States from Conn ...
'' — green milkweed

Aspleniaceae The Aspleniaceae (spleenworts) are a family of ferns, included in the order Polypodiales. The composition and classification of the family have been subject to considerable changes. In particular, there is a narrow circumscription, Aspleniaceae ...

* '' Asplenium adulterinum'' — ladder spleenwort * ''
Asplenium platyneuron ''Asplenium platyneuron'' (syn. ''Asplenium ebeneum''), commonly known as ebony spleenwort or brownstem spleenwort, is a fern native to North America east of the Rocky Mountains. It takes its common name from its dark, reddish-brown, glossy sti ...
'' — ebony spleenwort * ''
Asplenium rhizophyllum ''Asplenium rhizophyllum'', the (American) walking fern, is a frequently-occurring fern native to North America. It is a close relative of '' Asplenium ruprechtii'' (syn: ''Camptosorus sibiricus'') which is found in East Asia and also goes by the ...
'' — walking-fern spleenwort * ''
Asplenium ruta-muraria ''Asplenium ruta-muraria'' is a species of fern commonly known as wall-rue (but which, as a fern, is not by any means closely related to common rue). It is a very small epipetric species, growing exclusively on limestone and other calcareous ro ...
'' — wallrue spleenwort * ''
Asplenium scolopendrium ''Asplenium scolopendrium'', commonly known as the hart's-tongue fern, is an evergreen fern in the genus ''Asplenium'' native to the Northern Hemisphere. Description The most striking and unusual feature of the fern is its simple, undivided fron ...
'' — hart's-tongue fern * ''
Asplenium trichomanes ''Asplenium trichomanes'', the maidenhair spleenwort, is a small fern in the spleenwort genus ''Asplenium''. It is a widespread and common species, occurring almost worldwide in a variety of rocky habitats. It is a variable fern with several sub ...
'' — maidenhair spleenwort * ''
Asplenium viride ''Asplenium viride'' is a species of fern known as the green spleenwort because of its green stipes and rachides. This feature easily distinguishes it from the very similar-looking maidenhair spleenwort, ''Asplenium trichomanes''. Taxonomy Gr ...
'' — green spleenwort

Asteraceae The family Asteraceae, alternatively Compositae, consists of over 32,000 known species of flowering plants in over 1,900 genera within the order Asterales. Commonly referred to as the aster, daisy, composite, or sunflower family, Compositae w ...

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Achillea millefolium ''Achillea millefolium'', commonly known as yarrow () or common yarrow, is a flowering plant in the family Asteraceae. Other common names include old man's pepper, devil's nettle, sanguinary, milfoil, soldier's woundwort, and thousand seal. The ...
'' — common yarrow * '' Achillea sibirica'' — Siberian yarrow * '' Adenocaulon bicolor'' — American trail-plant * ''
Ageratina altissima ''Ageratina altissima'', also known as white snakeroot, richweed, or white sanicle, is a poisonous perennial herb in the family Asteraceae, native to eastern and central North America. An older binomial name for this species is ''Eupatorium rugo ...
'' — white snakeroot * ''
Agoseris aurantiaca ''Agoseris aurantiaca'' is a species of plant in the family Asteraceae, commonly called orange agoseris or mountain dandelion. It is widespread in western North America. Description ''Agoseris aurantiaca'' is a perennial herb or subshrub growi ...
'' — orange-flowered false-dandelion * '' Agoseris gaspensis'' — Gaspé Peninsula agoseris * ''
Agoseris glauca ''Agoseris glauca'' is a species of flowering plant in the family Asteraceae known by the common names false dandelion, pale agoseris, prairie agoseris, and short-beaked agoseris. It is native to western North America. Description ''Agoseris gla ...
'' — pale goat-chicory * '' Agoseris grandiflora'' — largeflower false-dandelion * '' Agoseris heterophylla'' — annual false-dandelion * '' Agoseris lackschewitzii'' — pink agoseris * '' Almutaster pauciflorus'' — marsh alkali aster * ''
Ambrosia acanthicarpa ''Ambrosia acanthicarpa'' is a North American species of bristly annual plants in the family Asteraceae. Members of the genus ''Ambrosia (plant), Ambrosia'' are called ragweeds. The species has common names including flatspine bur ragweed, Hooker ...
'' — flatspine bursage * ''
Ambrosia artemisiifolia ''Ambrosia artemisiifolia'', with the common names common ragweed, annual ragweed, and low ragweed, is a species of the genus '' Ambrosia'' native to regions of the Americas. Taxonomy The species name, ''artemisiifolia'', is given because the le ...
'' — annual ragweed * '' Ambrosia chamissonis'' — silver bursage * '' Ambrosia coronopifolia'' — western ragweed * ''
Ambrosia psilostachya ''Ambrosia psilostachya'' is a species of ragweed known by the common names Cuman ragweed and perennial ragweed, and western ragweed. Distribution and habitat The plant is widespread across much of North America (United States, Canada, and north ...
'' — nakedspike ambrosia * ''
Ambrosia trifida ''Ambrosia trifida'', the giant ragweed, is a species of flowering plant in the family Asteraceae. It is native to North America, where it is widespread in Canada, the United States, and northern Mexico. Distribution It is present in Europe a ...
'' — great ragweed * '' Ambrosia × helenae'' * ''
Anaphalis margaritacea ''Anaphalis margaritacea'', commonly known as the western pearly everlasting or pearly everlasting, is an Asia Asia (, ) is one of the world's most notable geographical regions, which is either considered a continent in its own right or ...
'' — pearly everlasting * ''
Antennaria alpina ''Antennaria alpina'' (alpine pussytoes or alpine catsfoot or alpine everlasting) is a European and North American species of plant in the family Asteraceae. ''Antennaria alpina'' is native to mountainous and subarctic regions of Scandinavia, Gr ...
'' — alpine pussytoes * ''
Antennaria anaphaloides ''Antennaria anaphaloides'', the pearly pussytoes, is a North American species of plants in the family Asteraceae. It is native to western Canada (British Columbia, Alberta, Saskatchewan) and the western United States (primarily the Rocky Mounta ...
'' — handsome pussytoes * '' Antennaria aromatica'' — aromatic pussytoes * ''
Antennaria corymbosa ''Antennaria corymbosa'' is a North American species of flowering plants in the family Asteraceae known by the common names flat-top pussytoes or meadow pussytoes. It is native to western Canada (British Columbia, Alberta, Saskatchewan) and the ...
'' — meadow pussytoes * ''
Antennaria densifolia ''Antennaria densifolia'', the denseleaf pussytoes, is a North American species of plants in the family Asteraceae. It is native to western Canada ( Northwest Territories, Yukon, British Columbia, Alberta) and the US states of Alaska and Montan ...
'' — dense-leaved antennaria * ''
Antennaria dimorpha ''Antennaria dimorpha'' is a North American species of flowering plants in the family Asteraceae known by the common names low pussytoes or gray cushion pussytoes. It is native to western Canada (British Columbia, Alberta, Saskatchewan) and the ...
'' — two-form pussytoes * ''
Antennaria eucosma ''Antennaria pulchella'' is a North American species of flowering plants in the family Asteraceae known by the common names showy pussytoes and handsome pussytoes. It is widespread across much of Canada including the three Arctic Territories, as ...
'' — Newfoundland pussytoes * '' Antennaria flagellaris'' — stoloniferous pussytoes * ''
Antennaria friesiana ''Antennaria friesiana'', or Fries' pussytoes, is an Arctic species of plants in the family Asteraceae. It is the northern reaches of Asia and North America (Russia, Alaska, Northwest Territories, Yukon, Nunavut, Quebec, Labrador, and Greenla ...
'' — Fries' pussytoes * ''
Antennaria howellii ''Antennaria howellii'' (everlasting or Howell's pussytoes) is a North American species in the genus '' Antennaria'' within the family Asteraceae. It is native to northern Alaska, much of Canada including the Arctic territories, and the norther ...
'' — small pussytoes * '' Antennaria lanata'' — white-margined pussytoes * ''
Antennaria luzuloides ''Antennaria luzuloides'' is a North American species of flowering plant in the family Asteraceae known by the common name rush pussytoes. The species is native to western Canada (Alberta, British Columbia) and the western United States (Oregon, ...
'' — 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 ''Antennaria plantaginifolia'' (known by the common names plantain leaf pussytoes and woman's tobacco) is a perennial forb native to the eastern North America, that produces cream colored composite flowers in spring. Description ''Antennaria p ...
'' — plantainleaf pussytoes * '' Antennaria pulcherrima'' — handsome pussytoes * '' Antennaria racemosa'' — Hooker's pussytoes * '' Antennaria rosea'' — rosy pussytoes * '' Antennaria stenophylla'' — narrowleaf pussytoes * '' Antennaria umbrinella'' — brown pussytoes * '' Antennaria × erigeroides'' * '' Antennaria × macounii'' * '' Antennaria × rousseaui'' * '' Arnica amplexicaulis'' — streambank arnica * ''
Arnica angustifolia ''Arnica angustifolia'' is an Arctic and alpine species of plants in the sunflower family, known by the common names narrowleaf arnica and Arctic arnica. It is native to colder regions in Europe, Asia, and North America (northern and western Can ...
'' — narrowleaf leopardbane * '' Arnica chamissonis'' — leafy arnica * ''
Arnica cordifolia ''Arnica cordifolia'' is a species of arnica in the sunflower family, known by the common name heartleaf arnica. It is native to western North America. Description This is a rhizomatous perennial herb producing one or more erect stems reaching ...
'' — 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 × diversifolia'' — rayless arnica * '' Arnoglossum plantagineum'' — Indian-plantain * '' Artemisia alaskana'' — Alaska wormwood * '' Artemisia arctica'' — boreal sagebrush * '' Artemisia biennis'' — biennial wormwood * ''
Artemisia campestris ''Artemisia campestris'' is a common and widespread species of plants in the sunflower family, Asteraceae. It is native to a wide region of Eurasia and North America. Common names include field wormwood, beach wormwood, northern wormwood, Breckl ...
'' — Pacific wormwood * ''
Artemisia cana ''Artemisia cana'' is a species of sagebrush native to western and central North America, a member of the sunflower family. It is known by many common names, including silver sagebrush, sticky sagebrush, silver wormwood, hoary sagebrush, and dw ...
'' — hoary sagebrush * ''
Artemisia dracunculus Tarragon (''Artemisia dracunculus''), also known as estragon, is a species of perennial herbaceous plant, herb in the family Asteraceae. It is widespread in the wild across much of Eurasia and North America and is cultivated for culinary and medi ...
'' — dragon wormwood * ''
Artemisia frigida ''Artemisia frigida'' is a widespread species of flowering plant in the aster family, which is known as the sunflower family. It is native to Europe, Asia, and much of North America. In parts of the north-central and northeastern United States ...
'' — prairie sagebrush * '' Artemisia furcata'' — three-fork wormwood * '' Artemisia globularia'' — arctic wormwood * ''
Artemisia glomerata Artemisia may refer to: People * Artemisia I of Caria (fl. 480 BC), queen of Halicarnassus under the First Persian Empire, naval commander during the second Persian invasion of Greece * Artemisia II of Caria (died 350 BC), queen of Caria under th ...
'' — Pacific alpine wormwood * ''
Artemisia laciniata ''Artemisia laciniata'' is a species of wormwood in the family Asteraceae. It's common name is the Siberian wormwood. It is mostly found in Russia, Alaska, the Yukon, and other parts of the US and Europe. Description ''Artemisia laciniata'' can ...
'' — Siberian wormwood * '' Artemisia lindleyana'' — Columbia River wormwood * '' Artemisia longifolia'' — longleaf wormwood * ''
Artemisia ludoviciana ''Artemisia ludoviciana'' is a North American species of flowering plant in the daisy family Asteraceae, known by several common names, including silver wormwood, western mugwort, Louisiana wormwood, white sagebrush, lobed cud-weed, and gray sag ...
'' — white sagebrush * ''
Artemisia michauxiana ''Artemisia michauxiana'' is a North American species of wormwood in the sunflower family. It is known by the common names Michaux's wormwood and lemon sagewort. It is native to the western United States and Canada. It grows in mountain talus ...
'' — Michaux's wormwood * '' Artemisia rupestris'' — rock wormwood * ''
Artemisia suksdorfii ''Artemisia suksdorfii'' is a North American species of sagebrush in the sunflower family. It is known by the common names coastal mugwort, coastal wormwood, and Suksdorf sagewort. It is native to coastal regions from British Columbia, Washingto ...
'' — coastal wormwood * ''
Artemisia tilesii ''Artemisia tilesii'' is an Asian and North American species of flowering plant in the aster family. Its common names include Tilesius' wormwood,Artemisia tridentata ''Artemisia tridentata'', commonly called big sagebrush,MacKay, Pam (2013), ''Mojave Desert Wildflowers'', 2nd ed., , p. 264. Great Basin sagebrush or (locally) simply sagebrush, is an aromatic shrub from the family Asteraceae, which grows in ari ...
'' — big sagebrush * ''
Artemisia tripartita ''Artemisia tripartita'' is a species of flowering plant in the aster family known by the common name threetip sagebrush. It is native to western North America from British Columbia to Nevada and Montana to Colorado. It covers about 8.4 million ...
'' — three-tip sagebrush * ''
Aster alpinus ''Aster alpinus'', the alpine aster or blue alpine daisy, is a species of flowering plant in the family Asteraceae, native to the mountains of Europe (including the Alps), with a subspecies native to Canada and the United States. This herbaceous ...
'' — alpine aster * ''
Baccharis halimifolia ''Baccharis halimifolia'' is a North American species of shrubs in the family Asteraceae. It is native to Nova Scotia, the eastern and southern United States (from Massachusetts south to Florida and west to Texas and Oklahoma), eastern Mexico (Nu ...
'' — eastern baccharis * ''
Balsamorhiza deltoidea ''Balsamorhiza deltoidea'' is a species of flowering plant in the sunflower tribe of the plant family Asteraceae known by the common name deltoid balsamroot. It is native to western North America from British Columbia to California, where it gro ...
'' — deltoid balsamroot * ''
Balsamorhiza sagittata ''Balsamorhiza sagittata'' is a North American species of flowering plant in the tribe Heliantheae of the family Asteraceae known by the common name Arrowleaf Balsamroot. It is widespread across western Canada and much of the western United State ...
'' — arrowleaf balsamroot * ''
Bidens amplissima ''Bidens amplissima'', also known as the Vancouver Island beggarticks, is an annual wetland species in the family Asteraceae which displays a broad range of morphological variation and has a geographic range restricted to southwestern British Col ...
'' — Vancouver Island beggarticks * ''
Bidens cernua ''Bidens cernua'' is a species of flowering plant in the aster family, Asteraceae. ''Bidens cernua'' is distributed throughout much of Eurasia and North America.
'' — nodding beggarticks * '' Bidens connata'' — purplestem beggarticks * ''
Bidens coronata ''Coreopsis nuecensis'', the crown tickseed, is a North American plant species of '' Coreopsis'' in the family Asteraceae. It is native to Texas, Louisiana, and probably Tamaulipas. There are reports of isolated populations in Michigan and Florid ...
'' — 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 ''Bidens tripartita'' is a common and widespread species of flowering plant in the sunflower family, Asteraceae, commonly known as three-lobe beggarticks, three-part beggarticks, leafy-bracted beggarticks or trifid bur-marigold. It is native to m ...
'' — three-lobe beggarticks * '' Bidens vulgata'' — tall bur-marigold * '' Boltonia asteroides'' — aster-like boltonia * '' Brickellia grandiflora'' — tassel flower * '' Brickellia oblongifolia'' — narrowleaf brickell-bush * '' Cacaliopsis nardosmia'' — silvercrown * '' Canadanthus modestus'' — great northern aster * '' Chaenactis douglasii'' — hoary pincushion * ''
Chrysothamnus viscidiflorus ''Chrysothamnus viscidiflorus'' is a species of shrub in the family Asteraceae of the Americas known by the common names yellow rabbitbrush and green rabbitbrush. Description ''Chrysothamnus viscidiflorus'' grows up to about in height, with s ...
'' — 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 ''Cirsium muticum'', also known as swamp thistle, marsh thistle, dunce-nettle, or horsetops, is a North American species of plants in the family Asteraceae, native to central and eastern Canada and the central and eastern United States. Descri ...
'' — swamp thistle * ''
Cirsium pitcheri ''Cirsium pitcheri'', sometimes called Pitcher's thistle or dune thistle, is a species of thistle native to sand dune shorelines along the upper Great Lakes. It is native to Indiana, Illinois, Michigan, Wisconsin, and Ontario. It is listed by t ...
'' — dune thistle * '' Cirsium scariosum'' * ''
Cirsium undulatum ''Cirsium undulatum'' is a species of thistle known by the common names wavyleaf thistle and gray thistle. It is native to much of central and western North America from British Columbia east to Manitoba and south as far as the State of Durango ...
'' — nodding thistle * '' Cirsium × vancouverense'' * ''
Conyza canadensis ''Erigeron canadensis'' ( synonym ''Conyza canadensis'') is an annual plant native throughout most of North America and Central America. It is also widely naturalized in Eurasia and Australia. Common names include horseweed, Canadian horseweed ...
'' — Canada horseweed * ''
Coreopsis lanceolata ''Coreopsis lanceolata'', commonly known as lanceleaf coreopsis, lanceleaf tickseed, lance-leaved coreopsis, or sand coreopsis, is a North American species of Coreopsis, tickseed in the family Asteraceae. Description ''Coreopsis lanceolata'' is ...
'' — sand coreopsis * '' Coreopsis rosea'' — rose coreopsis * ''
Coreopsis tinctoria Plains coreopsis, garden tickseed, golden tickseed, or calliopsis, ''Coreopsis tinctoria'', is an annual forb. The plant is common in Canada (from Quebec to British Columbia), northeast Mexico (Coahuila, Nuevo León, Tamaulipas), and much of th ...
'' — 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 ''Doellingeria umbellata'', known by the common names tall flat-topped white aster, parasol whitetop, or tall white-aster, is a North American plant species in the family Asteraceae. It is native to Canada (from Alberta to Newfoundland), St. Pier ...
'' — flat-top white aster * ''
Echinacea angustifolia ''Echinacea angustifolia'', the narrow-leaved purple coneflower or blacksamson echinacea, is a species of flowering plant in the family Asteraceae. It is native to North America, where it is widespread across much of the Great Plains of central ...
'' — narrow-leaved purple coneflower * '' Echinacea pallida'' — pale purple coneflower * '' Eclipta prostrata'' — false daisy * '' Erechtites hieraciifolia'' — fireweed * ''
Ericameria nauseosa ''Ericameria nauseosa'' (formerly ''Chrysothamnus nauseosus''), commonly known as Chamisa, rubber rabbitbrush, and gray rabbitbrush, is a shrub in the sunflower family (Aster) found in the arid regions of western North America. Two subspeci ...
'' — 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 ''Erigeron peregrinus'' is a North American species of flowering plants in the family Asteraceae known by the common name wandering fleabane. ''Erigeron peregrinus'' is native to northwestern North America from Alaska to Oregon. Some populations ...
'' — 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 × 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 ''Eupatorium perfoliatum'', known as common boneset or just boneset, is a North American perennial plant in the family Asteraceae. It is a common native to the Eastern United States and Canada, widespread from Nova Scotia to Florida, west as far ...
'' — common boneset * '' Eupatorium purpureum'' — sweet joe-pyeweed * '' Eupatorium × truncatum'' * ''
Eurybia conspicua ''Eurybia conspicua'', commonly known as the western showy aster, is a North American species of plants in the family Asteraceae. It is native to western Canada (from Manitoba to British Columbia) and the western United States (northern Cascades ...
'' — showy aster * ''
Eurybia divaricata ''Eurybia divaricata'' (syn. ''Aster divaricatus''), the white wood aster, is an herbaceous plant native to eastern North America. It occurs in the eastern United States, primarily in the Appalachian Mountains, though it is also present in southe ...
'' — 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 ''Euthamia caroliniana'', known as Carolina grass-leaved goldenrod or slender goldentop is a flowering plant in the genus ''Euthamia'', a member of the family Asteraceae. It is listed as Vulnerable due to habitat loss and disturbance within its ra ...
'' — slender fragrant goldenrod * '' Euthamia galetorum'' — narrowleaf fragrant goldenrod * ''
Euthamia graminifolia ''Euthamia graminifolia'', the grass-leaved goldenrod or flat-top goldentop, is a North American species of plants in the family Asteraceae. It is native to much of Canada (from Newfoundland to British Columbia), and the northern and eastern Uni ...
'' — flat-top fragrant goldenrod * ''
Euthamia gymnospermoides ''Euthamia gymnospermoides'', with the common names Great Plains goldentop and Texas goldentop, is a plant in the family Asteraceae. It is native primarily to the Great Plains and Great Lakes Region where it is found in prairies and sandy area ...
'' — viscid bushy goldenrod * ''
Euthamia occidentalis ''Euthamia occidentalis'' is a flowering plant, known by the common names western flat topped goldenrod, western goldentop and western goldenrod, in the family Asteraceae. Description ''Euthamia occidentalis'' is a scrubby perennial plant with m ...
'' — western fragrant goldenrod * ''
Gaillardia aristata ''Gaillardia aristata'' is a North American species of flowering plant in the sunflower family, known by the common names common blanketflower and common gaillardia. This perennial wildflower is widespread across much of North America, from Yuko ...
'' — great blanket-flower * ''
Gaillardia pulchella ''Gaillardia pulchella'' (firewheel, Indian blanket, Indian blanketflower, or sundance) is a North American species of short-lived perennial or annual flowering plants in the sunflower family. Description The branching stem of ''G. 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 ''Gutierrezia sarothrae'' is a species of flowering plant in the family Asteraceae known by the common names broom snakeweed, broomweed, snakeweed, and matchweed. It is a subshrub native to much of the western half of North America, from western ...
'' — broom snakeweed * ''
Helenium autumnale ''Helenium autumnale'' is a North American species of flowering plants in the family Asteraceae. Common names include common sneezeweed and large-flowered sneezeweed. Description Common sneezeweed is a perennial herb up to tall. In late summer ...
'' — common sneezeweed * ''
Helianthella uniflora ''Helianthella uniflora'', the oneflower helianthella, is a North American plant species in the family Asteraceae. It grows in the western United States and western Canada. It has been found from British Columbia south as far as northern Arizona ...
'' — Rocky Mountain rockrose * '' Helianthus annuus'' — common sunflower * '' Helianthus couplandii'' — Coupland's sunflower * '' Helianthus decapetalus'' — thin-leaved sunflower * '' Helianthus divaricatus'' — woodland sunflower * ''
Helianthus giganteus ''Helianthus giganteus'', the giant sunflower or tall sunflower, is a species of ''Helianthus'' native to the eastern United States and eastern and central Canada, from Newfoundland west to Alberta south to Minnesota, Mississippi, and South Car ...
'' — tall sunflower * ''
Helianthus maximiliani ''Helianthus maximiliani'' is a North American species of sunflower known by the common name Maximilian sunflower. This sunflower is named for Prince Maximilian of Wied-Neuwied, who encountered it on his travels in North America. ''Helianthus m ...
'' — Maximillian's sunflower * ''
Helianthus nuttallii ''Helianthus nuttallii'', or Nuttall's sunflower, is a species of sunflower native to northern, central, and western North America, from Newfoundland west to British Columbia, south to Missouri, New Mexico, and California. ''Helianthus nuttallii ...
'' — Nuttall's sunflower * '' Helianthus pauciflorus'' — stiff sunflower * ''
Helianthus petiolaris ''Helianthus petiolaris'' is a North American plant species in the family Asteraceae, commonly known as the prairie sunflower or lesser sunflower. Naturalist and botanist Thomas Nuttall was the first to describe the prairie sunflower in 1821. Th ...
'' — prairie sunflower * '' Helianthus strumosus'' — paleleaf sunflower * '' Helianthus tuberosus'' — Jerusalem artichoke * '' Helianthus × alexidis'' * '' Helianthus × laetiflorus'' — hybrid prairie sunflower * '' Helianthus × luxurians'' * '' Heliopsis helianthoides'' — smooth oxeye * ''
Heterotheca villosa ''Heterotheca villosa'', called the hairy goldenaster, is a species of flowering plant in the family Asteraceae found in central and western North America. Description The plant grows to in height and the leaves are in average length. Bloom ...
'' — hairy false goldenaster * ''
Hieracium albiflorum ''Hieracium albiflorum'', known by the names white hawkweed and white-flowered hawkweed, is a common and widespread species of plant in the family Asteraceae. ''Hieracium albiflorum'' is found in western North America, from Alaska and the North ...
'' — 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 ''Hieracium laevigatum'', or smooth hawkweed, is a Eurasian plant species in the tribe Cichorieae within the family Asteraceae. It is widespread across much of Europe and western Asia Western Asia, West Asia, or Southwest Asia, is the westernm ...
'' — smooth hawkweed * '' Hieracium marianum'' — Maryland hawkweed * ''
Hieracium paniculatum ''Hieracium paniculatum'', the Allegheny hawkweed, is a North American plant species in the tribe Cichorieae within the family Asteraceae. It grows only in the eastern United States and eastern Canada, from Nova Scotia west to Ontario, Michigan, ...
'' — panicled hawkweed * '' Hieracium plicatum'' — boreal hawkweed * '' Hieracium robinsonii'' — Robinson's hawkweed * '' Hieracium scabrum'' — rough hawkweed * ''
Hieracium scouleri ''Hieracium scouleri'', known as Scouler's woollyweed, is a species of flowering plant in the tribe Cichorieae within the family Asteraceae. It is native to western North America, from British Columbia and Alberta in Canada, and south to northern ...
'' — Scouler's hawkweed * '' Hieracium triste'' — woolly hawkweed * ''
Hieracium umbellatum ''Hieracium umbellatum'' (commonly called ''Hieracium canadense''), the Canadian hawkweed, Canada hawkweed, narrowleaf hawkweed, or northern hawkweed, is a flowering plant in the family Asteraceae. Distribution It is native to most of the temper ...
'' — umbellate hawkweed * '' Hieracium venosum'' — rattlesnake hawkweed * '' Hieracium × dutillyanum'' * '' Hieracium × fassettii'' * '' Hieracium × fernaldii'' * '' Hieracium × flagellare'' * '' Hieracium × grohii'' * '' Hieracium × stoloniflorum'' * ''
Hymenopappus filifolius ''Hymenopappus filifolius'' is a North American species of flowering plant in the daisy family known by the common names fineleaf hymenopappus and Columbia cutleaf. It is native to western and central North America from Alberta and Saskatchewan so ...
'' — fineleaf woolly-white * ''
Hymenoxys richardsonii ''Hymenoxys richardsonii'', the pingue hymenoxys or pingue rubberweed, is a North American species of plants in the sunflower family. It is widespread across the western United States and western Canada from Arizona, New Mexico, and western Texas ...
'' — Richardson's bitterweed * '' Ionactis linariifolius'' — flaxleaf aster * '' Ionactis stenomeres'' — Rocky Mountain aster * ''
Iva axillaris ''Iva axillaris'', called povertyweed or death weed, is a North American species of flowering plants in the family Asteraceae. It grows in the western and central United States and in western Canada, from British Columbia south to California and ...
'' — small-flowered marsh-elder * ''
Iva frutescens ''Iva frutescens'' is a species of flowering plant in the family Asteraceae known by the common names Jesuit's bark,Jaumea carnosa ''Jaumea carnosa'', known by the common names marsh jaumea, fleshy jaumea, or simply jaumea, is a halophytic salt marsh plant native to the wetlands, coastal sea cliffs and salt marshes of the western coast of North America. Description It is a ...
'' — fleshy jaumea * ''
Krigia biflora ''Krigia biflora'', also known as two-flower cynthia or two-flower dwarf dandelion, is a species of plant in the family Asteraceae The family Asteraceae, alternatively Compositae, consists of over 32,000 known species of flowering plants i ...
'' — two-flower dwarf-dandelion * ''
Krigia virginica ''Krigia virginica'', also known as dwarf dandelion or Virginia dwarf dandelion, is a North American species of plants in the family Asteraceae The family Asteraceae, alternatively Compositae, consists of over 32,000 known species of flowe ...
'' — Virginia dwarf-dandelion * ''
Lactuca biennis ''Lactuca biennis'' is a North American species of wild lettuce known by the common names tall blue lettuce and blue wood lettuce. It is widespread across much of the United States and Canada from Alaska and Yukon south as far as California, New ...
'' — tall blue lettuce * ''
Lactuca canadensis ''Lactuca canadensis'' is a species of wild lettuce known by the common names Canada lettuce, Canada wild lettuce, tall lettuce, and Florida blue lettuce.Weakley, Alan S''. Flora of the Southern and Mid-Atlantic States.'' UNC Herbarium, North Car ...
'' — Canada lettuce * ''
Lactuca floridana ''Lactuca floridana'', commonly known as woodland lettuce, Florida lettuce, or false lettuce is a North American species of wild lettuce. It is native across much of central Canada and the eastern and central United States. ''Lactuca floridana ...
'' — woodland lettuce * '' Lactuca hirsuta'' — hairy lettuce * ''
Lactuca ludoviciana ''Lactuca ludoviciana'', the biannual lettuce, is a North American species of wild lettuce. It is widespread across much of central and western Canada and the western and central United States from Ontario west to British Columbia and south to Lo ...
'' — western lettuce * ''
Lactuca tatarica ''Lactuca tatarica'', known as blue lettuce, is a Eurasian flowering plant in the tribe Cichorieae within the family Asteraceae The family Asteraceae, alternatively Compositae, consists of over 32,000 known species of flowering plants in ov ...
'' — Tartarian lettuce * '' Lactuca terrae-novae'' — Newfoundland lettuce * '' Lasthenia maritima'' — maritime goldfields * '' Leucanthemum integrifolium'' — entire-leaf daisy * ''
Liatris aspera ''Liatris aspera'' (known as rough blazing star, button blazing star, lacerate blazing star, tall prairie blazing star, or tall gayfeather) is a perennial wildflower in the Asteraceae family that is found in central to eastern North America in ha ...
'' — tall gayfeather * '' Liatris cylindracea'' — slender blazingstar * '' Liatris ligulistylis'' — strapstyle gayfeather * '' Liatris punctata'' — dotted gayfeather * '' Liatris spheroidea'' — spherical gayfeather * ''
Liatris spicata ''Liatris spicata'', the dense blazing star or prairie feather, is a herbaceous perennial flowering plant in the family Asteraceae. It is native to eastern North America where it grows in moist prairies and sedge meadows. The plants have tall ...
'' — marsh blazingstar * '' Liatris × creditonensis'' * '' Liatris × gladewitzii'' * '' Luina hypoleuca'' — littleleaf silverback * ''
Lygodesmia juncea ''Lygodesmia juncea'', the rush skeletonplant or just skeletonweed, is a species of flowering plant in the family Asteraceae The family Asteraceae, alternatively Compositae, consists of over 32,000 known species of flowering plants in ove ...
'' — rush skeletonplant * ''
Machaeranthera canescens ''Dieteria canascens'' (formerly ''Machaeranthera canescens'') is an annual plant or short lived perennial plant in the family Asteraceae, known by the common names hoary tansyaster and hoary-aster.Mojave Desert Wildflowers, Pam MacKay, 2nd Ed., ...
'' — hoary tansy-aster * ''
Machaeranthera grindelioides ''Machaeranthera'' is a genus of North American flowering plants in the family Asteraceae which are known by the common name tansyaster. Tansyasters are variable in appearance. Some are small, singular wildflowers, while others are sprawling shr ...
'' — western aster * '' Machaeranthera pinnatifida'' — spiny goldenaster * '' Madia exigua'' — little tarweed * '' Madia glomerata'' — mountain tarweed * ''
Madia gracilis ''Madia gracilis'' is a species of flowering plant in the family Asteraceae known by the common names grassy tarweed, slender tarweed, and gumweed madia. Description ''Madia gracilis'' is vstem is branching, and hairy and glandular in texture. T ...
'' — grassy tarweed * '' Madia madioides'' — woodland tarweed * '' Madia minima'' — smallhead tarweed * '' Matricaria discoidea'' — pineapple-weed chamomile * ''
Megalodonta beckii ''Bidens beckii'', commonly called Beck's water-marigold or simply water marigold is a species of flowering plant in the family Asteraceae. It is native to Canada and the northern United States. Description ''Bidens beckii'' is a perennial herb ...
'' — Beck's water-marigold * '' Microseris bigelovii'' — coast microseris * ''
Microseris borealis ''Microseris'' is a genus of plants in the tribe Cichorieae within the family Asteraceae, native to North America, Australia, and New Zealand. It contains the following species: '' Microseris acuminata'' – Sierra foothill silverpuffs – C ...
'' — northern microseris '' Microseris lindleyi'' — Lindley's silverpuffs * '' Microseris nutans'' — nodding silverpuffs * ''
Mikania scandens ''Mikania scandens'' is a species of flowering plant in the family Asteraceae. Its common names include climbing hempvine, climbing hempweed, and louse-plaster. It is native to the eastern and central United States, with its distribution extendin ...
'' — climbing hempweed * ''
Nothocalais cuspidata ''Nothocalais cuspidata'', the prairie false dandelion, is a herbaceous perennial with yellow flowers and long slender leaves, native to the Great Plains The Great Plains (french: Grandes Plaines), sometimes simply "the Plains", is a broad ...
'' — prairie false-dandelion * ''
Nothocalais troximoides ''Nothocalais troximoides'' is a species of flowering plant in the family Asteraceae known by the common name sagebrush false dandelion. It is native to western North America, including British Columbia and the northwestern United States.Hitchcoc ...
'' — weevil false-dandelion * '' Oclemena acuminata'' — whorled aster * '' Oclemena nemoralis'' — bog aster * '' Oclemena × blakei'' — Blake's aster * '' Oligoneuron album'' — prairie goldenrod * '' Oligoneuron houghtonii'' — Houghton's goldenrod * '' Oligoneuron ohioense'' — Ohio goldenrod * '' Oligoneuron riddellii'' — Riddell's goldenrod * ''
Oligoneuron rigidum ''Solidago rigida'', known by the common names stiff goldenrod and stiff-leaved goldenrod, is a North American plant species in the family Asteraceae. It has a widespread distribution in Canada and the United States, where it is found primarily e ...
'' — stiff goldenrod * '' Oligoneuron × bernardii'' * '' Oligoneuron × krotkovii'' * '' Oligoneuron × lutescens'' — upland aster * '' Oligoneuron × maheuxii'' * '' Omalotheca norvegica'' — Norwegian cudweed * '' Omalotheca supina'' — alpine cudweed * '' Omalotheca sylvatica'' — woodland cudweed * '' Packera aurea'' — golden ragwort * '' Packera cana'' — silvery ragwort * ''
Packera contermina ''Packera'' is a genus of about 64 species of plants in the daisy family, Asteraceae. Most species are commonly called ragworts or grounsels. Its members were previously included in the genus ''Senecio'' (where they were called ''aureoid senecios ...
'' — northwestern groundsel * ''
Packera cymbalaria ''Packera'' is a genus of about 64 species of plants in the daisy family, Asteraceae. Most species are commonly called ragworts or grounsels. Its members were previously included in the genus ''Senecio'' (where they were called ''aureoid senecios ...
'' — 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 ''Petasites frigidus'', the Arctic sweet coltsfoot or Arctic butterbur, is a species of flowering plant in the family Asteraceae. It is native to Arctic to cool temperate regions of the Northern Hemisphere in northern Europe, northern Asia and ...
'' — arctic butterbur * '' Petasites sagittatus'' — arrowleaf sweet colt's-foot * '' Petasites × vitifolius'' * '' Picradeniopsis oppositifolia'' — oppositeleaf false bahia * ''
Polymnia canadensis ''Polymnia canadensis'', commonly known as whiteflower leafcup, is a flowering perennial plant in the family Asteraceae. It is native to eastern North America from Ontario south to Alabama and from Kansas, Oklahoma, and Minnesota east to North Ca ...
'' — 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 × mainensis'' * ''
Pseudognaphalium canescens ''Pseudognaphalium canescens'' ( syn. ''Gnaphalium canescens'') is a species of flowering plant in the family Asteraceae known by the common name Wright's cudweed. It is native to western North America from western Canada to northern Mexico. It c ...
'' — 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 ''Rudbeckia hirta'', commonly called black-eyed Susan, is a North American flowering plant in the family Asteraceae, native to Eastern and Central North America and naturalized in the Western part of the continent as well as in China. It has now b ...
'' — 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 ''Silphium laciniatum'' is a species of flowering plant in the family Asteraceae known commonly as compassplant or compass plant. It is native to North America, where it occurs in Ontario in Canada and the eastern and central United States as fa ...
'' — compass plant * '' Silphium perfoliatum'' — cup-plant * ''
Silphium terebinthinaceum ''Silphium terebinthinaceum'' is a member of the Asteraceae, a family that includes sunflowers, and is commonly referred to as prairie dock or prairie rosinweed. It is native to central and eastern North America. "Rosinweed" became one of the pla ...
'' — prairie rosinweed * '' Sinosenecio newcombei'' — Newcombe's groundsel * ''
Solidago altissima ''Solidago altissima'', the tall goldenrod or late goldenrod, is a North American species of goldenrod in the family Asteraceae which is widespread across much of Canada, the United States, and northern Mexico. It is common in much of its range ...
'' — tall goldenrod * ''
Solidago arguta ''Solidago arguta'', commonly called Atlantic goldenrod, cut-leaf goldenrod, and sharp-leaved goldenrod, is a species of flowering plant native to eastern and central North America. It grows along the Gulf and Atlantic states of the United States ...
'' — cutleaf goldenrod * ''
Solidago bicolor ''Solidago bicolor'', with several common names including white goldenrod, silverrod and (in Québec) verge d’or bicolore, is a plant species native to much of eastern North America. It is found in Canada (from Manitoba to Nova Scotia) and in t ...
'' — white goldenrod * ''
Solidago caesia ''Solidago caesia'', commonly named blue-stemmed goldenrod, wreath goldenrod, or woodland goldenrod, is a flowering plant native to North America. Description Key identification features include a dark, wiry, blue or purple stem, and flower head ...
'' — bluestem goldenrod * '' Solidago calcicola'' — rock goldenrod * '' Solidago canadensis'' — Canada goldenrod * '' Solidago cutleri'' — Cutler's goldenrod * ''
Solidago flexicaulis ''Solidago flexicaulis'', the broadleaved goldenrod, or zigzag goldenrod, is a North American species of herbaceous perennial plants in the family Asteraceae. It is native to the eastern and central parts of the United States and Canada, from Nov ...
'' — broad-leaved goldenrod * ''
Solidago gigantea ''Solidago gigantea'' is a North American plant species in the family Asteraceae. Its common names include tall goldenrod and giant goldenrod, among others. Goldenrod is the state flower of Kentucky, and ''Solidago gigantea'' is the state flowe ...
'' — smooth goldenrod * ''
Solidago hispida ''Solidago hispida'', the hairy goldenrod, is North American species of flowering plants in the family Asteraceae. Its native range extends from Newfoundland west to Saskatchewan, and south as far as Oklahoma, Louisiana, and Georgia. ''Solidago ...
'' — hairy goldenrod * '' Solidago juncea'' — early goldenrod * '' Solidago latissimifolia'' — Elliott's goldenrod * ''
Solidago macrophylla ''Solidago macrophylla'', the largeleaf goldenrod or large-leaved goldenrod, is North American species of herbaceous perennial plants of the family Asteraceae. It is native to eastern and central Canada (from Ontario to Newfoundland & Labrador) a ...
'' — largeleaf goldenrod * ''
Solidago missouriensis ''Solidago missouriensis'' is a species of flowering plant in the family Asteraceae known by the common names Missouri goldenrod and prairie goldenrod. It is native to North America, where it is widespread across much of Canada, the United State ...
'' — Missouri goldenrod * ''
Solidago mollis ''Solidago mollis'' is a North American species of flowering plant in the family Asteraceae known by the common names velvety goldenrod, soft goldenrod or Ashly goldenrod. It is native to the central United States and central Canada, primarily t ...
'' — ground goldenrod * '' Solidago multiradiata'' — alpine goldenrod * ''
Solidago nemoralis ''Solidago nemoralis'' is a species of flowering plant in the family Asteraceae. It is native to North America, where it is widely found in Canada (every province except Newfoundland and Labrador) and the United States (all states wholly or parti ...
'' — field goldenrod * ''
Solidago patula ''Solidago patula'', the roundleaf goldenrod or rough-leaved goldenrod, is a species of Solidago, goldenrod found in wetlands, especially swamps, fens, and sedge meadows. It is native to most of the eastern United States, as far west as Wisconsin ...
'' — roundleaf goldenrod * '' Solidago puberula'' — downy goldenrod * ''
Solidago rugosa ''Solidago rugosa'', commonly called the wrinkleleaf goldenrod or rough-stemmed goldenrod, is a species of flowering plant in the family Asteraceae. It is native to North America, where it is widespread across eastern and central Canada (from Ne ...
'' — roughleaf goldenrod * ''
Solidago sempervirens ''Solidago sempervirens'', the seaside goldenrod or salt-marsh goldenrod, is a plant species in the genus ''Solidago'' of the family Asteraceae. It is native to eastern North America and parts of the Caribbean. It is an introduced species in the ...
'' — seaside goldenrod * '' Solidago simplex'' — sticky goldenrod * ''
Solidago speciosa ''Solidago speciosa'', the showy goldenrod, is a North American species of flowering plants in the family Asteraceae. It grows in the province of Ontario in central Canada, as well as in the eastern and central United States (from the Atlantic c ...
'' — showy goldenrod * '' Solidago squarrosa'' — squarrose goldenrod * '' Solidago uliginosa'' — bog goldenrod * '' Solidago ulmifolia'' — elmleaf goldenrod * '' Solidago victorinii'' — Victorin's goldenrod * '' Solidago × asperula'' * '' Solidago × beaudryi'' * '' Solidago × erskinei'' * '' Solidago × luteus'' * '' Solidago × raymondii'' * ''
Stenotus acaulis ''Stenotus acaulis'' is a species of flowering plant in the family Asteraceae known by the common name stemless mock goldenweed. It is native to the western United States, where it grows in rocky soils in sagebrush plateau and mountain habitats. ...
'' — stemless mock goldenweed * ''
Stenotus armerioides ''Stenotus armerioides'', the thrift mock goldenweed, is a perennial plant in the family Asteraceae. The plant is native to areas of the Western United States and to Saskatchewan Saskatchewan ( ; ) is a Provinces and territories of Canada, ...
'' — 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 ''Symphyotrichum boreale'' (formerly ''Aster borealis'') is a species of flowering plant of the aster family (Asteraceae) native to North America. Commonly known as rush aster, northern bog aster, and slender white aster, it is a perennial, he ...
'' — 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 × 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 {{div col end Flora of Canada, *

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