Arabis platysperma var. howellii Calflora

Distribution by County 477

Howell's broad seeded rock cress, Howell's pioneer rockcress, Howell's rockcress

Arabis platysperma var. howellii is a perennial herb that is native to California.

Current name in JEPS: Boechera howellii

Record Count by County


Alpine: 15	Madera: 7	Plumas: 4	Trinity: 7
Amador: 1	Mariposa: 10	Shasta: 15	Tulare: 24
El Dorado: 10	Mono: 42	Sierra: 2	Tuolumne: 33
Fresno: 61	Nevada: 10	Siskiyou: 21
Inyo: 26	Placer: 2	Tehama: 3

Suggested Citation

Calflora: Information on California plants for education, research and conservation, with data contributed by public and private institutions and individuals, including the Consortium of California Herbaria. [web application]. 2026. The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/ (Accessed: 10/05/2026).