Astragalus agrestis

(Field Milkvetch)

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Astragalus agrestis, Fourmile Area, Chaffee Co. 6641/6649

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Astragalus agrestis, Medano Pass Road, Saguache Co. 7749

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Astragalus agrestis, Medano Pass Road, Saguache Co. 7797

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Astragalus agrestis, Fourmile Area, Chaffee Co. 6659

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Astragalus agrestis, Medano Pass Road, Saguache Co. 7749

Scientific Name Astragalus agrestis USDA PLANTS Symbol ASAG2
Common Name Field Milkvetch, Purple Milkvetch ITIS Taxonomic Serial No. 25405
Family Fabaceae (Pea) Burke Museum of Natural History Ref. Click Here
Description Life zones and habitat: High Plains to montane (5000 to 10500 ft.); moist meadows, forests, along streams.
Plant: Perennial with numerous slender creeping to erect stems, 5 to 12 inches long.
Leaves: Alternate compound leaves, 2 to 4 inches long, each with 11 to 19 elliptic to oblong leaflets 3/8 to 3/4-inch long.
Inflorescence: Dense, oval-shaped racemes on short peduncles, up to 1 inch across and long; 5 to 15 erect pea-like flowers, each 1/2 to 3/4-inch long with pink-purple to blueish and white petals; calyx tube with grey or black hairs.
Bloom Period: May to July.
References: Montana Plant Life and "Flora of Colorado" by Jennifer Ackerfield.
BONAP Distribution Map
Colorado Status:
Native

© Tom Lebsack 2022

Banner photo: Ten Mile Range and Rhodiola integrifolia (King’s Crown) in Summit County