PlantFiles: Mountain pepperweed
Lepidium montanum

The USDA database lists this native plant as a biennial, but other sources list it as a perennial. Found in semi-desert, foothills, and mountain areas, including Pinon/Juniper woodlands as well as Creosote or Sage scrub communities. This is a highly variable plant depending on location. Tiny white flowers in summer, and the basal leaves are usually withered at blooming time. Stems may be multiple or single. In my area (southern New Mexico) this plant has a very open and airy appearance. A delicate plant that looks at home among desert plants.