Common name:
Hall's milkvetch
Family:
Scientific name:
Astragalus hallii
Main flower color:
Range:
The southern Rocky Mountains (CO, NM) and parts of neighboring states
Height:
Up to 3 feet, but grows sideways, close to the ground
Habitat:
Rocky slopes, woodland
Leaves:
Odd pinnate, with at least 10 leaflets, which are ovate and have rounded tips
Season:
June to August
Leaves, stems and calyx of astragalus hallii have a light hair covering, less than some similar species. The plant is quite small but branches freely, forming compact mats, and the lower portion of the stems becomes woody with age. Leaves are pinnately compound, the leaflets alternately arranged, and relatively short, around 4 inches. The calyx tube is colored reddish purple, while the five-lobed flower is purple, lavender or blue, with white patches. The two wing petals are relatively narrow, oblong in shape, while the banner is broad, bent back by nearly 90 degrees.
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