Cypress Hills Interprovincial Park
Note that the key to the genera in Flora of Alberta requires that the flowers NOT be yellow. However, the flowers of this species are yellowish white. The key does this in an attempt to exclude Lotus. The most common Lotus on the Canadian prairies, L. corniculatus, has deep yellow flowers arranged in an umbel-like inflorescence.
Note also that Flora of Alberta requires "stems generally less than 5 mm thick at base". The stems of this specimen are just over 6 mm thick halfway up their length, but are significantly thinner than this at the base.
Drummondii: Answers to key questions in Budd's Flora and Flora of Alberta leading to this species.
Astragalus: Answers to key questions in Budd's Flora and Flora of Alberta leading to this genus.
Leguminosae: Answers to key questions in Budd's Flora leading to this family.