''Agoseris'' is a small genus of annual or perennial herbs in the family

Asteraceae Asteraceae () is a large family (biology), family of flowering plants that consists of over 32,000 known species in over 1,900 genera within the Order (biology), order Asterales. The number of species in Asteraceae is rivaled only by the Orchi ...

described as a genus in 1817. ''Agoseris'' is native to North America, South America and the

Falkland Islands The Falkland Islands (; ), commonly referred to as The Falklands, is an archipelago in the South Atlantic Ocean on the Patagonian Shelf. The principal islands are about east of South America's southern Patagonian coast and from Cape Dub ...

. In general appearance, ''Agoseris'' is reminiscent of

dandelion ''Taraxacum'' () is a genus of flowering plants in the family Asteraceae, which consists of species commonly known as dandelions. The scientific and hobby study of the genus is known as taraxacology. The genus has a near-cosmopolitan distribu ...

s and are sometimes called mountain dandelion or false dandelion. Like dandelions the plants are (mostly) stemless, the leaves forming a basal

rosette Rosette is the French diminutive of ''rose''. It may refer to: Flower shaped designs * Rosette (award), a mark awarded by an organisation * Rosette (design), a small flower design *hence, various flower-shaped or rotational symmetric forms: ** R ...

, contain milky sap, produce several unbranched, stem-like flower stalks ( peduncles), each flower stalk bearing a single, erect, liguliferous flower head that contains several florets, and the flower head maturing into a ball-like seed head of beaked

achene An achene (; ), also sometimes called akene and occasionally achenium or achenocarp, is a type of simple fruit, simple dry fruits, dry fruit produced by many species of flowering plants. Achenes are monocarpellate (formed from one carpel) and Dehi ...

s, each achene with a pappus of numerous, white bristles.

Species

; Accepted speciesThe Plant List search for ''Agoseris''
/ref>Biota of North America Program 2013 county distribution maps
/ref>Flann, C (ed) 2009+ Global Compositae Checklist
/ref> * ''

Agoseris apargioides ''Agoseris apargioides'' is a species in the family Asteraceae, is commonly called seaside agoseris or seaside false-dandelion. It is native to the Pacific coast of the United States from Washington to central California, where it grows primari ...

'' - seaside agoseris - CA OR WA * ''

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 agoseris - USA and Canada from

Rocky Mountains The Rocky Mountains, also known as the Rockies, are a major mountain range and the largest mountain system in North America. The Rocky Mountains stretch in great-circle distance, straight-line distance from the northernmost part of Western Can ...

to Pacific; also

Quebec Quebec is Canada's List of Canadian provinces and territories by area, largest province by area. Located in Central Canada, the province shares borders with the provinces of Ontario to the west, Newfoundland and Labrador to the northeast, ...

* ''

Agoseris chilensis ''Agoseris'' is a small genus of annual or perennial herbs in the family Asteraceae described as a genus in 1817. ''Agoseris'' is native to North America, South America and the Falkland Islands. In general appearance, ''Agoseris'' is reminiscen ...

'' -

Chile Chile, officially the Republic of Chile, is a country in western South America. It is the southernmost country in the world and the closest to Antarctica, stretching along a narrow strip of land between the Andes, Andes Mountains and the Paci ...

* ''

Agoseris coronopifolia ''Agoseris'' is a small genus of annual or perennial herbs in the family Asteraceae described as a genus in 1817. ''Agoseris'' is native to North America, South America and the Falkland Islands. In general appearance, ''Agoseris'' is reminiscen ...

'' - Patagonian agoseris -

Argentina Argentina, officially the Argentine Republic, is a country in the southern half of South America. It covers an area of , making it the List of South American countries by area, second-largest country in South America after Brazil, the fourt ...

* ''

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 ...

'' - prairie agoseris - western USA + Canada from AK to Ont + NM * ''

Agoseris grandiflora ''Agoseris grandiflora'' is a North American species of flowering plant in the family Asteraceae known by the common names California dandelion, bigflower agoseris, and grassland agoseris. The plant is native to western North America from Britis ...

'' -

grassland A grassland is an area where the vegetation is dominance (ecology), dominated by grasses (Poaceae). However, sedge (Cyperaceae) and rush (Juncaceae) can also be found along with variable proportions of legumes such as clover, and other Herbaceo ...

agoseris - CA OR WA ID NV MT UT BC * ''

Agoseris heterophylla ''Agoseris heterophylla'' is a liguliferous species in the family Asteraceae known by the common name annual agoseris or mountain dandelion. It is widespread in mostly drier regions of western North America from British Columbia to Baja Californi ...

'' - annual agoseris - western USA + Canada + northwestern Mexico * ''

Agoseris hirsuta ''Agoseris hirsuta'' is a North American species of flowering plants in the family Asteraceae known by the common name Coast Range agoseris or woolly goat chicory. It grows only in the Coast Ranges along the Pacific coast of California, from Hum ...

'' - Coast Range agoseris - CA * ''

Agoseris laevigata ''Agoseris'' is a small genus of annual or perennial herbs in the family Asteraceae described as a genus in 1817. ''Agoseris'' is native to North America, South America and the Falkland Islands. In general appearance, ''Agoseris'' is reminiscen ...

'' - Chile * ''

Agoseris × montana ''Agoseris'' is a small genus of annual or perennial herbs in the family Asteraceae described as a genus in 1817. ''Agoseris'' is native to North America, South America and the Falkland Islands. In general appearance, ''Agoseris'' is reminiscen ...

'' - North Park agoseris - CO WY * ''

Agoseris monticola ''Agoseris monticola'' is a North American species of flowering plants in the family Asteraceae known by the common name Sierra Nevada agoseris or Sierra Nevada mountain dandelion. It grows in the mountains of the western United States, primarily ...

'' - Sierra Nevada agoseris - CA OR WA ID NV BC * ''

Agoseris parviflora ''Agoseris'' is a small genus of annual or perennial herbs in the family Asteraceae described as a genus in 1817. ''Agoseris'' is native to North America, South America and the Falkland Islands. In general appearance, ''Agoseris'' is reminiscen ...

'' - steppe agoseris - western USA * ''

Agoseris pterocarpa ''Agoseris'' is a small genus of annual or perennial herbs in the family Asteraceae described as a genus in 1817. ''Agoseris'' is native to North America, South America and the Falkland Islands. In general appearance, ''Agoseris'' is reminiscen ...

'' -

* ''

Agoseris retrorsa ''Agoseris retrorsa'' is a North American species of flowering plant in the family Asteraceae known by the common name spearleaf agoseris or spearleaf mountain dandelion. It is native to western North America from Washington to Utah to Baja Cali ...

'' - spearleaf agoseris - CA OR WA NV UT ; Hybrids * ''

Agoseris × agrestis ''Agoseris'' is a small genus of annual or perennial herbs in the family Asteraceae described as a genus in 1817. ''Agoseris'' is native to North America, South America and the Falkland Islands. In general appearance, ''Agoseris'' is reminiscen ...

'' (''A. glauca'' × ''A. parviflora'') - Front Range agoseris - UT CO * '' Agoseris × dasycarpa'' (''A. glauca'' × ''A. monticola'') - Modoc agoseris - CA OR * ''

Agoseris × elata ''Agoseris'' is a small genus of annual or perennial herbs in the family Asteraceae described as a genus in 1817. ''Agoseris'' is native to North America, South America and the Falkland Islands. In general appearance, ''Agoseris'' is reminiscen ...

'' (''A. aurantiaca'' × ''A. grandiflora'') - Willamette agoseris - CA OR WA BC ; Species formerly included * ''Agoseris alpestris'' = ''

Nothocalais alpestris ''Nothocalais alpestris'' is a species of flowering plant in the family Asteraceae known by the common name alpine lake false dandelion. It is native to the Cascade Range, Sierra Nevada and other mountains from northern Washington to central Cali ...

'' * ''Agoseris barbellulata'' = ''

'' * ''Agoseris cuspidata'' = ''

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 is a broad expanse of plain, flatland in North America. The region st ...

Distribution

Agoseris is one of several groups of

flowering plant Flowering plants are plants that bear flowers and fruits, and form the clade Angiospermae (). The term angiosperm is derived from the Ancient Greek, Greek words (; 'container, vessel') and (; 'seed'), meaning that the seeds are enclosed with ...

s that have a

New World The term "New World" is used to describe the majority of lands of Earth's Western Hemisphere, particularly the Americas, and sometimes Oceania."America." ''The Oxford Companion to the English Language'' (). McArthur, Tom, ed., 1992. New York: ...

amphitropical Antitropical (alternatives include biantitropical or amphitropical) distribution is a type of disjunct distribution where a species or clade exists at comparable latitudes across the equator but not in the tropics. For example, a species may be fou ...

distribution (occurring in temperate regions of both North and South America). Most species are found in cordilleran regions of western North America, being distributed from southern

Yukon Territory Yukon () is a territory of Canada, bordering British Columbia to the south, the Northwest Territories to the east, the Beaufort Sea to the north, and the U.S. state of Alaska to the west. It is Canada’s westernmost territory and the smallest ...

and the panhandle of Alaska southward to northern

Baja California Baja California, officially the Free and Sovereign State of Baja California, is a state in Mexico. It is the northwesternmost of the 32 federal entities of Mexico. Before becoming a state in 1952, the area was known as the North Territory of B ...

Arizona Arizona is a U.S. state, state in the Southwestern United States, Southwestern region of the United States, sharing the Four Corners region of the western United States with Colorado, New Mexico, and Utah. It also borders Nevada to the nort ...

, and

New Mexico New Mexico is a state in the Southwestern United States, Southwestern region of the United States. It is one of the Mountain States of the southern Rocky Mountains, sharing the Four Corners region with Utah, Colorado, and Arizona. It also ...

, and from the Pacific coast eastward to the northern

Great Plains The Great Plains is a broad expanse of plain, flatland in North America. The region stretches east of the Rocky Mountains, much of it covered in prairie, steppe, and grassland. They are the western part of the Interior Plains, which include th ...

. Disjunct, isolated populations occur on the

Gaspé Peninsula The Gaspé Peninsula, also known as Gaspesia (, ; ), is a peninsula along the south shore of the St. Lawrence River that extends from the Matapedia Valley in Quebec, Canada, into the Gulf of St. Lawrence. It is separated from New Brunswick on it ...

and

Otish Mountains The Monts Otish (Otish Mountains) are a range of tall hills in the geographic centre of Quebec, Canada, north of Lac Mistassini and Manicouagan Reservoir Manicouagan Reservoir (also Lake Manicouagan ; ) is an annular lake in central Quebec ...

(Monts Otish) of

, near the

Hudson Bay Hudson Bay, sometimes called Hudson's Bay (usually historically), is a large body of Saline water, saltwater in northeastern Canada with a surface area of . It is located north of Ontario, west of Quebec, northeast of Manitoba, and southeast o ...

Ontario Ontario is the southernmost Provinces and territories of Canada, province of Canada. Located in Central Canada, Ontario is the Population of Canada by province and territory, country's most populous province. As of the 2021 Canadian census, it ...

, and on hills near the Arctic Ocean in the

Northwest Territories The Northwest Territories is a federal Provinces and territories of Canada, territory of Canada. At a land area of approximately and a 2021 census population of 41,070, it is the second-largest and the most populous of Provinces and territorie ...

of Canada. One species is native to the southern

Andes Mountains The Andes ( ), Andes Mountains or Andean Mountain Range (; ) are the longest continental mountain range in the world, forming a continuous highland along the western edge of South America. The range is long and wide (widest between 18°S ...

and

, southward to

Patagonia Patagonia () is a geographical region that includes parts of Argentina and Chile at the southern end of South America. The region includes the southern section of the Andes mountain chain with lakes, fjords, temperate rainforests, and glaciers ...

Tierra del Fuego Tierra del Fuego (, ; Spanish for "Land of Fire", rarely also Fireland in English) is an archipelago off the southernmost tip of the South America, South American mainland, across the Strait of Magellan. The archipelago consists of the main is ...

, and the

References

External links

USDA Plants Profile for ''Agoseris''
* {http://www.calflora.org/cgi-bin/specieslist.cgi?where-genus=Agoseris Calflora Database: ''Agoseris'' species index-links]
Jepson Manual Treatment (TJM)

— ''identification and uses of edible parts''. {{Taxonbar, from=Q2704468 Agoseris, Flora of Northern America Asteraceae genera Taxa named by Constantine Samuel Rafinesque