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| Scientific Name | Geum macrophyllum | USDA PLANTS Symbol | GEMA4 |
| Common Name | Bur Avens, Large-leaf Avens | ITIS Taxonomic Serial No. | 24654 |
| Family | Rosaceae (Rose) | SEINet Reference |
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| Description |
Life zones and habitat: Foothills to subalpine (5500 to 10000 ft ft.); moist areas in meadows, forests, streamsides. Plant: Tall, erect perennial 12 to 48 inches tall; hairy stems, usually unbranched. Leaves: Petiolate basal and stem leaves, margins irregularly cleft to toothed; basal leaves 3 to 12 inches long, pinnately-divided into 5 to 9 leaflets, the terminal one divided into 3 parts; stem leaves smaller, mostly divided into 3 leaflets, each 3/4 to 4-3/4 inches long, oblanceolate with leaf-like stipules, 1/4 to 3/4-inch long. Inflorescence: Cyme of 2 to 15 flowers with 5 roundish, bright yellow petals; numerous (20 +/-) stamens; sepals erect-spreading initially, becoming reflexed. Bloom Period: June to September. Fruit: Bur-like seedhead with many styles bent at tips. Reference: "Flora of Colorado" by Jennifer Ackerfield, "Guide to Colorado Wildflowers" by G.K. Guennel, "The Alpine Flora of the Rocky Mountains" by Richard W. Scott, and SEINet. |
BONAP Distribution Map |
Colorado Status: Native |
| Scientific Name | Geum rossii | USDA PLANTS Symbol | GERO2 |
| Common Name | Alpine Avens | ITIS Taxonomic Serial No. | 24660 |
| Family | Rosaceae (Rose) | SEINet Reference |
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| Description |
Life zones and habitat: Subalpine and alpine (10000 to 14300); hillsides, alpine meadows and tundra. Plant: Erect perennial 6 to 8 inches tall in dense mats, slender reddish stems. Leaves: Compound basal leaves up to 6 inches long divided into many small dark green oblanceolate to obovate leaflets, entire to coarsley toothed margins; smaller, pinnatifid stem leaves. Inflorescence: Stems with 1 to 4 flowers with 5 roundish, bright yellow petals, 5 pointed green, often purplish sepals beneath; numerous yellow stamens and about 10 greenish-yellow pistils. Bloom Period: June to September. References: "Flora of Colorado" by Jennifer Ackerfield, "Guide to Colorado Wildflowers" by G.K. Guennel, "The Alpine Flora of the Rocky Mountains" by Richard W. Scott and Flora of North America. |
BONAP Distribution Map |
Colorado Status: Native |
