Lepidium montanum Nutt.  

Family: Brassicaceae

alpine pepperweed, more...Elizabeth's pepperweed, Kodachrome peppergrass, mountain pepperweed, mountain pepperweed, mountain pepperweed, mountain pepperweed, mountain pepperweed, mountain pepperweed, thickleaf pepperweed

[Lepidium campestre var. heterophyllum (S. Watson) C.L. Hitchc., moreLepidium integrifolium var. heterophyllum S. Watson, Lepidium jonesii Rydb., Lepidium lasiocarpum var. cinereum (C.L. Hitchc.) C.L. Hitchc., Lepidium montanum ssp. canescens (Thell.) C.L. Hitchc., Lepidium montanum ssp. cinereum (C.L. Hitchc.) C.L. Hitchc., Lepidium montanum var. alpinum S. Watson, Lepidium montanum var. canescens (Thell.) C.L. Hitchc., Lepidium montanum var. cinereum (C.L. Hitchc.) Rollins, Lepidium montanum var. claronense S.L. Welsh, Lepidium montanum var. coloradense Rollins, Lepidium montanum var. glabrum C.L. Hitchc., Lepidium montanum var. heterophyllum (S. Watson) C.L. Hitchc., Lepidium montanum var. jonesii (Rydb.) C.L. Hitchc., Lepidium montanum var. montanum Nutt., Lepidium montanum var. neeseae S.L. Welsh & Reveal, Lepidium montanum var. nevadense Rollins, Lepidium montanum var. stellae S.L. Welsh & Reveal, Lepidium montanum var. stelliae S.L. Welsh & Reveal, Lepidium montanum var. tenellum (L.O. Williams) C.L. Hitchc., Lepidium montanum var. todiltoensis N.D. Atwood & S.L. Welsh, Lepidium montanum var. wyomingense (C.L. Hitchc.) C.L. Hitchc.]