Agoseris

Superregnum: Eukaryota
Regnum: Plantae
Cladus: Angiosperms
Cladus: Eudicots
Cladus: Core eudicots
Cladus: Asterids
Cladus: Campanulids
Ordo: Asterales

Familia: Asteraceae
Subfamilia: Cichorioideae
Tribus: Cichorieae
Subtribus: Microseridinae
Genus: Agoseris
Species: A. apargioides – A. aurantiaca – A. chilensis – A. coronopifolia – A. elata – A. glauca – A. grandiflora – A. heterophylla – A. hirsuta – A. monticola – A. parviflora – A. retrorsa

Nothospecies: A. × agrestis – A. × dasycarpa
Name

Agoseris Raf., Fl. Ludov. 58. (1817)

Type species: Agoseris glauca (Pursh) Raf. Herb. Raf. 39. (1833)

References

Rafinesque, C.S. 1817. Florula Ludoviciana, or, a Flora of the State of Louisiana. Translated, Revised, and Improved, from the French of C. C. Robin, by C. S. Rafinesque 58.
Hassler, M. 2018. Agoseris. World Plants: Synonymic Checklists of the Vascular Plants of the World In: Roskovh, Y., Abucay, L., Orrell, T., Nicolson, D., Bailly, N., Kirk, P., Bourgoin, T., DeWalt, R.E., Decock, W., De Wever, A., Nieukerken, E. van, Zarucchi, J. & Penev, L., eds. 2018. Species 2000 & ITIS Catalogue of Life. Published on the internet. Accessed: 2018 July 10. Reference page.
International Plant Names Index. 2018. Agoseris. Published online. Accessed: July 10 2018.
Tropicos.org 2018. Agoseris. Missouri Botanical Garden. Published on the internet. Accessed: 2018 JUly 10.

Vernacular names
English: Mountain Dandelion
svenska: Indianfibblor

Agoseris is a small genus of annual or perennial herbs in the Asteraceae or sunflower family described as a genus in 1817.[1][2]

Agoseris is native to North America, South America and the Falkland Islands.[3][4]

In general appearance, Agoseris is reminiscent of dandelions and are sometimes called mountain dandelion or false dandelion. Like dandelions the plants are (mostly) stemless, the leaves forming a basal rosette, 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 achenes, each achene with a pappus of numerous, white bristles.

Species

Accepted species[5][6][4]

Agoseris apargioides - seaside agoseris - CA OR WA
Agoseris aurantiaca - orange agoseris - USA and Canada from Rocky Mountains to Pacific; also Quebec
Agoseris chilensis - Chile
Agoseris coronopifolia - Patagonian agoseris - Chile, Argentina, Falkland Islands
Agoseris glauca - prairie agoseris - western USA + Canada from AK to Ont + NM
Agoseris grandiflora - grassland agoseris - CA OR WA ID NV MT UT BC
Agoseris heterophylla - annual agoseris - western USA + Canada + northwestern Mexico
Agoseris hirsuta - Coast Range agoseris - CA
Agoseris laevigata - Chile
Agoseris × montana - North Park agoseris - CO WY
Agoseris monticola - Sierra Nevada agoseris - CA OR WA ID NV BC
Agoseris parviflora - steppe agoseris - western USA
Agoseris pterocarpa - Argentina
Agoseris retrorsa - spearleaf agoseris - CA OR WA NV UT

Hybrids[5]

Agoseris × agrestis (A. glauca × A. parviflora) - Front Range agoseris - UT CO
Agoseris × dasycarpa (A. glauca × A. monticola) - Modoc agoseris - CA OR
Agoseris × elata (A. aurantiaca × A. grandiflora) - Willamette agoseris - CA OR WA BC

Species formerly included[5]

Agoseris alpestris = Nothocalais alpestris
Agoseris barbellulata = Nothocalais alpestris
Agoseris cuspidata = Nothocalais cuspidata

Distribution

Agoseris is one of several groups of flowering plants that have a New World amphitropical 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 and the panhandle of Alaska southward to northern Baja California, Arizona, and New Mexico, and from the Pacific coast eastward to the northern Great Plains. Disjunct, isolated populations occur on the Gaspe Peninsula and Otish Mountains (Monts Otish) of Quebec, near the Hudson Bay in Ontario, and on hills near the Arctic Ocean in the Northwest Territories of Canada. One species is native to the southern Andes Mountains of Argentina and Chile, southward to Patagonia, Tierra del Fuego, and the Falkland Islands.
References

Rafinesque, Constantine Samuel. 1817. Florula Ludoviciana 58.
Tropicos, Agoseris Raf.
Flora of North America Mountain- or false dandelion Agoseris Rafinesque, Fl. Ludov. 58. 1817.
Flann, C (ed) 2009+ Global Compositae Checklist
The Plant List search for Agoseris
Biota of North America Program 2013 county distribution maps