Geum macrophyllum
(Bur Avens)
Geum macrophyllum, North Fork Rd, FR411, Las Animas Co. 7161
Geum macrophyllum, Indiana Creek, Summit Co. 6791
Geum macrophyllum, Peak 7, Breckenridge, Summit Co. 8291
Geum macrophyllum, Peak 7, Breckenridge, Summit Co. 8213
Geum macrophyllum, Indiana Creek, Summit Co. 6747/6751
Geum macrophyllum, Peaks Trail, Breckenridge, Summit Co. 7822
Geum macrophyllum, Peak 7, Breckenridge, Summit Co. 8221
Leaflets, Geum macrophyllum, Peaks Trail, Breckenridge, Summit Co. 7831
| 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 |
Click Here |
| 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 Map Color Key |
Colorado Status: Native |
© Tom Lebsack 2024
Banner photo: Castilleja rhexifolia and a brewing storm over the San Juan Mountains