15 cm ruler for scale
Plants with decumbent to erect growth habit. Lower stems red. Leaves pinnate with 11 to 21 leaflets. Leaflets linear oblong, measured to 2 cm long and 5 mm wide, usually folded inwards toward the stem. Bottom of leaves sparsely hairy, stems hairy. Flowers white, 8 mm to 1 cm long. Infloresence 4 to 5 cm in length, longer than the flowering stem.
To identify this species of Astragalus, I look at it's white flowers with a length of about 8 mm, its decumbent to erect growth habit, reddish lower stems, loose infloresence, leaflets to 21, and its infloresence longer than its flowering stem (Taxonomic Reminder for Identifying Saskatchewan Plants).
Height listed in Budd's Flora 20-50 cm. We measured plants to 33 cm tall.
Habitat is prairie slopes and lakeshores. Fairly common.
Took the above photos June 9th, prairie slopes of the Qu'Appelle Valley, 40 km north of Regina, SK.