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Agoseris aurantiaca
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Orange Flowered Agoseris
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Agoseris aurantiaca

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About Orange Flowered Agoseris (Agoseris aurantiaca) Agoseris aurantiaca is a liguliferous species in the Asteraceae or sunflower family, and is commonly called orange agoseris or mountain dandelion. It is widespread and common in western North America from Alaska and western Canada southward to California, Arizona, and New Mexico. It also occurs disjunctly in the Chic-Choc (Gaspe Peninsula) and Otish Mountains (Laurentian Plateau) of Quebec. This is primarily a species of mountainous regions and may be found in wet to dry habitats. It is a perennial herb producing a basal rosette of leaves.
Plant Description
Plant Type
Perennial herb

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


Growth Rate

Flower Color
Orange, Yellow

Flowering Season

Native Status

Natural Setting
Site Type
Meadows and stream edges

Part Shade

Elevation ?
152' - 11596'

Annual Precip. ?
5.5" - 102.7"

Summer Precip. ?
0.29" - 3.67"

Coldest Month ?
21.4° F - 52.0° F

Hottest Month ?
42.8° F - 79.3° F

Humidity ?
0.97 vpd - 27.24 vpd

Soil Description
Adaptable, tolerant of sand, loam and clay

Landscaping Information
Nursery Availability
Never or Almost Never Available

Other Names
Common Names
Orange 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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