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Agoseris aurantiaca
Agoseris aurantiaca var. aurantiaca
Conservation status
Secure  (NatureServe)
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Asterids
Order:	Asterales
Family:	Asteraceae
Genus:	Agoseris
Species:	A. aurantiaca
Binomial name
Agoseris aurantiaca (Hook.) Greene
Synonyms
Synonymy Agoseris angustissima Greene Agoseris arachnoidea Rydb. Agoseris arizonica (Greene) Greene Agoseris attenuata Rydb. Agoseris carnea Rydb. Agoseris confinis Greene Agoseris frondifera Osterh. Agoseris gaspensis Fernald Agoseris gracilens (A.Gray) Kuntze Agoseris gracilens (A.Gray) Greene Agoseris gracilenta Greene Agoseris graminifolia Greene Agoseris greenei (A.Gray) Rydb. Agoseris howellii Greene Agoseris humilis Rydb. 1905 not (Benth.) Kuntze 1891 Agoseris lackschewitzii Douglass M.Hend. & R.K.Moseley Agoseris longirostris Greene Agoseris nana Rydb Agoseris naskapensis J.Rousseau & Raymond Agoseris prionophylla Greene Agoseris purpurea (A.Gray) Greene Agoseris roseata Rydb. Agoseris subalpina G.N.Jones Agoseris vulcanica Greene Microrhynchus aurantiacus Fisch. & C.A.Mey. Microrhynchus purpureus A.Gray Microrhynchus troximoides Torr. & A.Gray Stylopappus pumilus D.Dietr. Troximon arachnoideum (Rydb.) A.Nelson Troximon arizonicum Greene Troximon aurantiacum Hook. Troximon gracilens A.Gray Troximon purpureum (A.Gray) Greene

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 growing to 60 centimeters (24 inches) in height. It produces a basal rosette of leaves, which are 5–35 cm (2–14 in) long and entire or with irregular tooth-like lobes. There is no stem, but it does produce several stem-like peduncles. Between June and August, each peduncle bears a single flower head 2.5 cm (1 in) in width, surrounded by glabrous to hairy phyllaries. The head is ligulate, containing several ray florets but no disc florets. The florets are most commonly orange but are occasionally yellow, pink, red, or purple. "Aurantiaca" means "orange-red". The flower head matures into a ball-like head of beaked achenes, each with a terminal pappus of numerous, white bristles.

It is the only orange-flowered species in the genus, the others typically being yellow.

Varieties

• Agoseris aurantiaca var. aurantiaca – most of species range
• Agoseris aurantiaca var. purpurea (A.Gray) Cronquist – southern Rocky Mountains

Distribution and habitat

The species is widespread and common in western North America from Alaska and the Northwest Territories in Canada southward to California, Arizona, and New Mexico, and eastward as far as the Rocky Mountains and the Black Hills. There are also isolated populations in the Chic-Choc Mountains on the Gaspé Peninsula and in the Otish Mountains of central Quebec.

It is primarily a species of mountainous regions and may be found in wet to dry habitats.

Uses

A cold infusion of this plant is used by the Ramah Navajo for protection against witches.

References

1. ^ The Plant List, search for Agoseris aurantiaca
2. ^ "Lady Bird Johnson Wildflower Center - The University of Texas at Austin". www.wildflower.org. Retrieved 2021-11-28.
3. ^ Spellenberg, Richard (2001) . National Audubon Society Field Guide to North American Wildflowers: Western Region (rev ed.). Knopf. p. 353. ISBN 978-0-375-40233-3.
4. Great Basin Wildflowers, Laird R. Blackwell, 2006, Morris Book Publishing LLC., ISBN 0-7627-3805-7
5. ^ Flora of North America, Agoseris aurantiaca
6. Biota of North America Program 2014 county distribution map
7. Calflora taxon report, University of California, Agoseris aurantiaca (Hook.) E. Greene orange agoseris, orange flowered agoseris
8. Cody, W. J. 1996. Flora of Yukon Territory i–xvii, 1–669. NRC Research Press, Ottawa.
9. Hultén, E. 1968. Flora of Alaska i–xxi, 1–1008. Stanford University Press, Stanford
10. Porsild, A. E. & W. Cody. 1980. Checklist of the Vascular Plants of the Northwest Territories Canada i–viii, 1–607. National Museum of Natural Sciences, Ottawa
11. "Agoseris auranitaca". Herb.umd.umich.edu. Retrieved 2014-03-04.

External links

• Media related to Agoseris aurantiaca at Wikimedia Commons
• Plants for a Future
• Jepson Manual Treatment
• USDA Plants Profile
• Calphotos Photo gallery, University of California
• Southwest Colorado Wildflowers
• Turner Photographics, Wildflowers of the Pacific Northwest
• Blackfoot Native Plants

• NatureServe secure species
• Agoseris
• Flora of the Northwestern United States
• Flora of the Southwestern United States
• Flora of Western Canada
• Flora of California
• Flora of New Mexico
• Flora of the Rocky Mountains
• Flora of the Sierra Nevada (United States)
• Plants described in 1833
• Taxa named by Edward Lee Greene
• Taxa named by William Jackson Hooker
• Objects believed to protect from evil