Arnica species

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Hairy Arnica (Arnica mollis)

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Scientific Name Arnica cordifolia USDA PLANTS Symbol
ARCO9
Common Name Heartleaf Arnica ITIS Taxonomic Serial No.
36561
Family Asteraceae (Sunflower) SEINet
Reference
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Description Foothills to subalpine life zones, moist, shady areas; erect single-stem perennial up to 24 inches tall; opposite, stalked, heart-shaped velvety leaves up to 4 inches long; large flower head (2 to 3 inches across) with 10 to 15 ray flowers (petals), many yellow disk flowers, hairy phyllaries. Descr. excerpt from "Guide to Colorado Wildflowers" by G.K. Guennel. Colorado Status
Native
Scientific Name Arnica latifolia USDA PLANTS Symbol
ARLA8
Common Name Broadleaf Arnica ITIS Taxonomic Serial No.
36566
Family Asteraceae (Sunflower) SEINet
Reference
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Description Subalpine life zone, moist, shady areas; erect perennial 8 to 14 inches tall, slender, sticky stem; opposite oval to triangular leaves 2 inches long with winged stalks and toothed edges; single or up to 3 flower heads, each 1 to 1-1/2 inches across with 8 to 16 ray flowers (petals), many darker yellow disk flowers and hairy, pointed green and white phyllaries. Similar to Heartleaf Arnica (Arnica cordifolia) except that the lower leaf stems are short, the leaves are not heart-shaped and it blooms in mid-August when most Heartleaf Arnica plants have gone to seed and their leaves are turning color. Descr. from Jane Hendrix and excerpt from "Guide to Colorado Wildflowers" by G.K. Guennel. Colorado Status
Native
Scientific Name Arnica mollis USDA PLANTS Symbol
ARMO4
Common Name Hairy Arnica ITIS Taxonomic Serial No.
36571
Family Asteraceae (Sunflower) SEINet
Reference
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Description Subalpine and alpine life zones, near streams and moist areas; erect perennial 18 to 24 inches tall, hairy, sticky stems; large, opposite, elliptic to lance-shaped leaves, soft, hairy and sticky with short teeth on edges; flower heads 2 inches across with 10 to 22 ray flowers (petals), many yellow disk flowers in a hemispherical disk, and pointed phyllaries. Descr. excerpt from "Guide to Colorado Wildflowers" by G.K. Guennel. Colorado Status
Native
Scientific Name Arnica parryi USDA PLANTS Symbol
ARPA13
Common Name Rayless Arnica, Parry's Arnica, Nodding Arnica ITIS Taxonomic Serial No.
36574
Family Asteraceae (Sunflower) SEINet
Reference
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Description Montane to alpine life zones, moist meadows, open forests and groves; erect perennial 18 to 24 inches tall, hairy stem; stem leaves are opposite, up to 4 pairs per stem; basal leaves larger, stalked, and lance-shaped with hairy edges; bell-shaped flower heads 3/4-inch long with no ray flowers (petals), many dark yellow disk flowers and short, purple-tinged phyllaries. Descr. excerpt from "Guide to Colorado Wildflowers" by G.K. Guennel. Colorado Status
Native
Scientific Name Arnica rydbergii USDA PLANTS Symbol
ARRY
Common Name Subalpine Arnica ITIS Taxonomic Serial No.
36575
Family Asteraceae (Sunflower) SEINet
Reference
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Description Subalpine and alpine life zones, rocky areas; erect perennial 3 to 14 inches tall; few pairs of widely-spaced lance-shaped stem leaves can be slightly serrated; basal leaves clustered and usually have petioles; flower heads with 7 to 12 yellow ray flowers (petals), many yellow disk flowers and short, pointed phyllaries with red tips. Descr. excerpt from www.swcoloradowildflowers.com. Colorado Status
Native

© Tom Lebsack 2017