Arnica latifolia
(Broadleaf Arnica)
Arnica latifolia, North Swan River, Summit Co. 5108
Arnica latifolia, Mayflower Gulch, Summit Co. 2621
Arnica latifolia, Mayflower Gulch, Summit Co. 6902
| 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 |
Life zones and habitat: Montane to alpine (8800 to 13000 ft.); moist areas in forests, meadows and open areas. Plant: Erect perennial 8 to 14 inches tall, slender, sticky stems. Leaves: Opposite, lance-elliptic to ovate leaves 2 inches long; lower leaves with winged petioles; mid and upper leaves becoming sessile; margins serrate to dentate; 2 to 4 pairs per stem. Inflorescence: Single or up to 3 flower heads, each 1 to 1-1/2 inches across with 8 to 16 ray flowers, many darker yellow disk flowers; hairy, pointed green and white phyllaries. Bloom Period: July and August. References: Notes from Jane Hendrix, Breckenridge, "Flora of Colorado" by Jennifer Ackerfield, SEINet and "Guide to Colorado Wildflowers" by G.K. Guennel. Note: Similar to Heartleaf Arnica (Arnica cordifolia) except that lower leaf petioles 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. |
BONAP Distribution Map
Map Color Key |
Colorado Status: Native |
© Tom Lebsack 2024
Banner photo: Ten Mile Range and Rhodiola integrifolia (King’s Crown) in Summit County