Taxon Report

Boechera evadens Windham & Al-Shehbaz

hidden rockcress

Print Report

Taxon Summary

Boechera evadens, commonly known as hidden rockcress, is a perennial herb in the Brassicaceae that is found only in California. It occurs within Upper montane coniferous forest, growing at elevations from 2560 to 2850 meters. Boechera evadens is ranked 1B.3, Plants Rare, Threatened or Endangered in California and Elsewhere; Not very threatened in California.

Classification


Scientific Name:	Boechera evadens Windham & Al-Shehbaz
Common Name:	hidden rockcress
Family:	Brassicaceae
Element Code:	PDBRA40030
USDA Plants Symbol:
Synonyms/Other Names:

Ecology and Life History


Lifeform:	perennial herb
Blooming Period: May-Aug	May-Aug
Elevation:	2560-2850 (8400-9350)
General Habitats:	Upper montane coniferous forest
Microhabitat:	Rocky
Microhabitat Details:

Conservation Status


CA Rare Plant Rank:	1B.3
Global Rank:	G1
State Rank:	S1
State List:	None
Fed List:	None
Other Status:	USFS_S
CRPR Changes:	added to 1B.3 on 2012-04-11

Occurrence Data from the CNDDB


Total Occurrences:	4
Element Occurrence Ranks:
Excellent (A)	0
Good (B)	0
Fair (C)	0
Poor (D)	0
None (X)	0
Unknown (U)	4

Location


California Endemic: True
California Counties and Islands: Name (Code)
Tulare (TUL)
Quads: Name (Quad Code)
Bonita Meadows (3611813), Cannell Peak (3511873), Crag Peak (3611812), Sirretta Peak (3511883)

Threat List Data from the CNDDB


Threat List Total:	0
EOs with Threat Listed:	Total EOs	% of EOs
	0	%

Notes



Known only from the high Sierra Nevada. All occurrences historical; need field surveys. Hybridizes with B. lemmonii and possibly others. Previously identified as Arabis fernaldiana var. stylosa; see this name in The Jepson Manual (1993). See Harvard Papers in Botany 11(1):61-88 (2006) for original description.
Threats:

Taxonomy:
Hybridizes with B. lemmonii and possibly others. Previously identified as Arabis fernaldiana var. stylosa; see this name in The Jepson Manual (1993).

Selected References

Proposed New Add to 1B.3, G1G2 / S1S2 (2012)

Citation California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 7 December 2025].