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Arnica mollis
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Cordillerean Anica
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Arnica mollis

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About Cordillerean Anica (Arnica mollis) Arnica mollis is a species of arnica known by the common name hairy arnica. It is native to western North America from Alaska to California to Colorado, where it grows in subalpine mountain habitat such as meadows and streambanks. It is a perennial herb producing one or more hairy, hairy, mostly naked stems 20 to 60 centimeters tall. There are 3 to 5 pairs of leaves along mainly the lower half of the stem, each oblong in shape and 4 to 20 centimeters in length. The flower cluster holds one to a few daisylike flower heads with centers of yellow disc florets and fringes of yellow ray florets. The fruit is an achene with a brownish pappus.
Plant Description
Plant Type
Perennial herb

Max. Height
0.7 - 2 ft (0.21 - 0.6 m)


Growth Rate

Flower Color

Flowering Season

Native Status

Natural Setting
Site Type
Meadows and streambanks

Part Shade

Elevation ?
494' - 13218'

Annual Precip. ?
9.4" - 153.8"

Summer Precip. ?
0.29" - 5.59"

Coldest Month ?
9.0° F - 50.5° F

Hottest Month ?
32.7° F - 79.8° F

Humidity ?
0.59 vpd - 26.39 vpd

Soil Description
Prefers sandy or loamy soils. Does not grow well in clay soils.

Landscaping Information
Nursery Availability
Never or Almost Never Available

Other Names
Common Names
Hairy Arnica

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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