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Agoseris glauca
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Pale Dandelion
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Agoseris glauca

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About Pale Dandelion (Agoseris glauca) Agoseris glauca is a species of flowering plant in the daisy family known by the common names pale agoseris and prairie agoseris. It is native to northern and western North America from Alaska to Ontario to New Mexico, where it grows in many habitat types. This is a perennial herb which varies in general appearance. It produces a basal patch of leaves of various shapes which may be as long as the plant is high. There is no stem but the plant flowers in a stemlike flower cluster which is sometimes erect, reaching heights near half a meter or taller. The flower head is one to three centimeters wide with layers of pointed phyllaries. The head is ligulate, bearing many yellow ray florets and no disc florets. The fruit is an achene with a body up to a centimeter long and a pappus which may be almost 2 centimeters in length.
Plant Description
Plant Type
Perennial herb

Max. Height
1 - 1.6 ft (0.3 - 0.49 m)


Growth Rate

Flower Color

Flowering Season

Native Status

Natural Setting
Site Type
Slopes, meadows

Sun, Part Shade

Elevation ?
1683' - 12802'

Annual Precip. ?
7.5" - 87.6"

Summer Precip. ?
0.55" - 2.75"

Coldest Month ?
19.3° F - 48.2° F

Hottest Month ?
41.0° F - 72.0° F

Humidity ?
0.68 vpd - 21.69 vpd

Soil Description
Adaptable, tolerant of sand, loam and clay

Landscaping Information
Nursery Availability
Never or Almost Never Available

Other Names
Common Names
Prairie Agoseris, Pale Agoseris, False Agoseris

Sources include: Wikipedia. All text shown in the "About" section of these pages is available under the Creative Commons Attribution-ShareAlike License. Plant observation data provided by the participants of the California Consortia of Herbaria, Sunset information provided by Jepson Flora Project. Propogation from seed information provided by the Santa Barbara Botanical Garden from "Seed Propagation of Native California Plants" by Dara E. Emery. Sources of plant photos include CalPhotos, Wikimedia Commons, and independent plant photographers who have agreed to share their images with Calscape. Other general sources of information include Calflora, CNPS Manual of Vegetation Online, Jepson Flora Project, Las Pilitas, Theodore Payne, Tree of Life, The Xerces Society, and information provided by CNPS volunteer editors, with special thanks to Don Rideout. Climate data used in creation of plant range maps is from PRISM Climate Group, Oregon State University, using 30 year (1981-2010) annual "normals" at an 800 meter spatial resolution.

Links:   Jepson eFlora Taxon Page  CalPhotos  Wikipedia  Calflora

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