San Bernardino Rockcress (Boechera peirsonii)

Global Rank: G1 - Critically Imperiled
Legal Status: N/A
Family: Brassicaceae
State: CA
Nature Serve ID: 142408
Lifeform: Subshrub, Forb/herb
Date Inducted in National Collection:

Description:

The San Bernardino rock cress is the Critically Imperiled sub-species of the Brewers rock cress and a member of the mustard family. Only three known occurrences are left where they can be found in the wild and all three are along the trail leading up to Mt. San Gregorio in the San Bernardino National Forest. They prefer sloped, coniferous forests and produce tubular, skinny, purple blooms for half the year between March and August. In addition to being endemic to San Bernardino County, all three occurrences are regularly threatened by trail use.

Where is San Bernardino Rockcress (Boechera peirsonii) located in the wild?

Habitat:

- subalpine forests - talus slopes

Distribution:

A. breweri var. pecuniaria has only three occurrences left in the wild and all three can be found on the trails in Mt. San Gregorio in San Bernardino National Forest.

States & Provinces:

San Bernardino Rockcress can be found in California

Which CPC Partners conserve San Bernardino Rockcress (Boechera peirsonii)?

California Botanic Garden

Not Sponsored

Conservation Actions

Assigned 06/09/17

CPC's Plant Sponsorship Program provides long term stewardship of rare plants in our National Collection. We are so grateful for all our donors who have made the Plant Sponsorship Program so successful. We are in the process of acknowledging all our wonderful plant sponsorship donors on our website. This is a work in progress and will be updated regularly.

Conservation Actions

09/01/2020

Based on an September 2020 extract of the California Plant Rescue Database, California Botanic Garden holds 2 accessions of Boechera peirsonii in orthodox seed collection. There are as many as 3444 seeds of this species in their collection - although some may have been used for curation testing or sent to back up.

08/05/2020

Based on an August 2020 extract of the California Plant Rescue Database, California Botanic Garden has collected 2 seed accessions of Boechera peirsonii from 1 plant occurrences listed in the California Natural Diversity Database. These collections together emcompass 11 maternal plants