Wyoming Rare Plant Field Guide
Arabis pusilla
- Similar Species: A. demissa var. languida has narrower ( 1.5 mm wide) drooping fruit on stalks 3-6 mm long. A. pendulina var. russeola has mostly simple hairs on the basal leaf margins and spreading to drooping fruit. Other Arabis spp. in Wyoming have upright fruit or densely appressed hairs.
- Flowering/Fruiting Period: May-June/June-July.
- Distribution: Endemic to the S Wind River Range, Wyoming (Fremont Co.).
- Habitat: Cracks and crevices in sparsely vegetated granite-pegmatite outcrops surrounded by sagebrush grassland. Elev. 8000-8100 ft.
- References: Dorn 1990 a; Fertig 1992 a, b; Marriott 1986 b, 1988 a; Rollins 1982, 1993; Weynand and Amidon 1990.
