Geum species

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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; 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 5 roundish, bright yellow petals; 20 stamens, numerous pistils; sepals and bractlets beneath with silky hairs.
Fruit: Bur-like seedhead with many styles bent at tips.
Reference: Descr. adapted from "Guide to Colorado Wildflowers" by G.K. Guennel, "The Alpine Flora of the Rocky Mountains" by Richard W. Scott, and SEINet.
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; hillsides, 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, and numerous yellow stamens and about 10 greenish-yellow pistils.
References: Descr. adapted from "Guide to Colorado Wildflowers" by G.K. Guennel and "The Alpine Flora of the Rocky Mountains" by Richard W. Scott.
Colorado Status
Native

© Tom Lebsack 2018