Late Yellow Locoweed
Nature Area Five Miles East of McLean
The calyx, standard, and wings have been removed in this picture. Note the size of the keel. Note also the sharp point at the tip of the keel. Finally, note that nine of the ten stamens are joined at the filament (they are monadelphous) and the tenth stamen is separate.
Note that the key to the genera in Flora of Alberta requires that the flowers NOT be yellow. This of course is not true for this species. It 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.
Campestris: Answers to key questions in Budd's Flora and Flora of Alberta leading to this species.
Oxytropis: 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.