Northern Prairie Wildlife Research Center
Wyoming Rare Plant Field Guide
- Synonym: Our plants may be the same as P. rydbergii.
- Similar Species: Fruits superficially resemble those of many members of the pea family (Fabaceae), but differ in having an internal dividing membrane (replum).
- Flowering/Fruiting Period: July-August.
- Distribution: Siberia to Alaska and N Canada. Disjunct in the Beartooth and Wind River mountains of Wyoming and Uinta Mountains in Utah.
- Habitat: Alpine talus, often on limestone substrates. Elev. 10,700-11,400 ft.
- References: Dorn 1977; Fertig 1992 a; Rollins 1993; USDA Forest Service 1991; Welsh et al. 1993.