Arnica rydbergii
(Subalpine Arnica)
Arnica rydbergii, Yankee Boy Basin, Ouray Co. 3370
Arnica rydbergii, Mayflower Gulch, Summit Co. 4665
Arnica rydbergii, Loveland Pass, Clear Creek Co. 1892
Arnica rydbergii, Mayflower Gulch, Summit Co. 4695
Arnica rydbergii, Yankee Boy Basin, Ouray Co. 3376
Lower leaf, Arnica rydbergii, Yankee Boy Basin, Ouray Co. 3382
Stem leaves, Arnica rydbergii, Mayflower Gulch, Summit Co. 4673
| 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 | Life zones and habitat: Montane to alpine (10000 to 13500 ft.); meadows and rocky areas. Plant: Erect perennial, somewhat tufted, 2 to 12 inches tall; sticky stems with short hairs. Leaves: Stem leaves in 2 to 4 widely-spaced pairs, opposite, oblanceolate to lanceolate; petiolate below, sessile above, and may have denticulate margins; basal leaves oblanceolate to spatulate clustered and usually petiolate; surfaces slightly hairy below, moderately pubescent further up the stem. Inflorescence: Flower heads, 1 to 3 per plant, with 6 to 10 yellow ray flowers, many yellow disk flowers; involucre with hairy, pointed phyllaries with dark reddish tips. Bloom Period: July and August. References: "The Alpine Flora of the Rocky Mountains" by Richard W. Scott, "Flora of Colorado" by Jennifer Ackerfield, SEINet, and SW Coloado Wildflowers. |
BONAP Distribution Map
Map Color Key |
Colorado Status: Native |
© Tom Lebsack 2024
Banner photo: Castilleja rhexifolia and a brewing storm over the San Juan Mountains