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Bransford, W.D. and Dolphia

Agoseris glauca

Agoseris glauca (Pursh) Raf.

Pale Agoseris, Pale Mountain Dandelion, False Dandelion

Asteraceae (Aster Family)

Synonym(s):

USDA Symbol: aggl

USDA Native Status: L48 (N), AK (N), CAN (N)

Several leafless stalks, each with a yellow flower head at the top, grown from a basal cluster of leaves. Sap milky.

Several other yellow-flowered species of Agoseris, called False Dandelion or Mountain Dandelion, are distinguished from this one by technical features of the fruit. The true Dandelion (Taraxacum) is also similar, but has minute pegs all over the top of the fruit and usually has bracts curved back beneath the involucre.

From the Image Gallery

13 photo(s) available in the Image Gallery

Plant Characteristics

Duration: Perennial
Habit: Herb
Size Notes: Up to about 2 feet tall when flowering.
Leaf: Green
Fruit: Fruit is a cypsela (pl. cypselae). Though technically incorrect, the fruit is often referred to as an achene.

Bloom Information

Bloom Color: Yellow
Bloom Time: May , Jun , Jul , Aug , Sep

Distribution

USA: AK , AZ , CA , CO , IA , ID , KS , MI , MN , MT , ND , NE , NM , NV , OR , SD , UT , WA , WY
Canada: AB , BC , MB , NT , ON , SK
Native Distribution: Western Canada; south through the California mountains; east across the West to New Mexico, South Dakota, and Minnesota.
Native Habitat: Open areas in coniferous forests and in sagebrush.

Growing Conditions

Water Use: Medium
Light Requirement: Sun
CaCO3 Tolerance: Medium

Benefit

Conspicuous Flowers: yes

Find Seed or Plants

View propagation protocol from Native Plants Network.

National Wetland Indicator Status

Region:	AGCP	AK	AW	CB	EMP	GP	HI	MW	NCNE	WMVE
Status:		FAC	FACU			FACU		FACU	FACU	FAC

This information is derived from the U.S. Army Corps of Engineers National Wetland Plant List, Version 3.1 (Lichvar, R.W. 2013. The National Wetland Plant List: 2013 wetland ratings. Phytoneuron 2013-49: 1-241). Click here for map of regions.

Bibliography

Bibref 946 - Gardening with Prairie Plants: How to Create Beautiful Native Landscapes (2002) Wasowski, Sally

Search More Titles in Bibliography

Web Reference

Webref 30 - Calflora (2018) Calflora
Webref 38 - Flora of North America (2019) Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
Webref 23 - Southwest Environmental Information Network (2009) SEINet - Arizona Chapter

Additional resources

USDA: Find Agoseris glauca in USDA Plants
FNA: Find Agoseris glauca in the Flora of North America (if available)
Google: Search Google for Agoseris glauca

Metadata

Record Modified: 2025-02-07
Research By: TWC Staff

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