Epilobium anagallidifolium
(Alpine Willowherb)
Epilobium anagallidifolium, Loveland Pass, Clear Creek Co. 8102
Epilobium anagallidifolium, Loveland Pass, Clear Creek Co. 0793
Epilobium anagallidifolium, Loveland Pass, Clear Creek Co. 0779
Epilobium anagallidifolium, Lake Emma, Park Co. 4501
| Scientific Name | Epilobium anagallidifolium | USDA PLANTS Symbol | EPAN4 |
| Common Name | Alpine Willowherb | ITIS Taxonomic Serial No. | 27283 |
| Family | Onagraceae (Evening Primrose) | UC Jepsen Reference |
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| Description |
Life zones and habitat: Montane to alpine (8500 to 13500 ft.); moist areas along streams, lakes, moist meadows, tundra. Plant: Small, tufted, mat-forming perennial 1 to 9 inches tall; stems have small hairs in lines from leaf bases, becoming glandular above. Leaves: Opposite, stem leaves vary from narrowly elliptic to ovate to oblanceolate, 1/2 to 1 inch long, dark green or red-tinged; marhins are entire or have obscure teeth. Inflorescence: A few small pink to rose flowers in a (usually) nodding terminal raceme with 4 notched petals; sepals are often reddish. Bloom Period: July and August. Fruit: Long, thin capsules 2/3 to 1-5/8 inches long. References: "Flora of Colorado" by Jennifer Ackerfield, E-Flora BC and SW Colorado Wildflowers. |
BONAP Distribution Map Map Color Key |
Colorado Status: Native |
© Tom Lebsack 2025
Banner photo: Castilleja rhexifolia and a brewing storm over the San Juan Mountains
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