Species Details

Boechera shockleyi

Shockley's rockcress

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Classification

Scientific Name: Boechera shockleyi (Munz) Dorn
Common Name: Shockley's rockcress
Family:	Brassicaceae
Element Code:	PDBRA061V0
USDA Plants Symbol:
Synonyms/Other Names: Arabis shockleyi

Conservation Status

CA Rare Plant Rank:	2B.2
Fed List:	None
State List:	None
Global Rank:	G3
State Rank:	S2
Other Status:	SB_CalBG/RSABG; USFS_S
CRPR Changes: changed from 2.2 to 2B.2 on 2013-06-12
Add Date:	1974-01-01
Date Edited:	2021-05-26

Ecology and Life History

Lifeform: perennial herb

Blooming Period: May-Jun

Elevation:
875 - 2310 meters
2870 - 7580 feet

General Habitats:

Pinyon and juniper woodland (carbonate, gravelly, quartzite, rocky)

Microhabitat Details:

Microhabitat:

Notes

Notes: Threatened by mining and vehicles. See Bulletin of the Southern California Academy of Sciences 31(2):61 (1932) for original description, and Rhodora 43(511):457 (1941) for taxonomic treatment.
Threats:
Taxonomy:

Threat List Data from the CNDDB

THREAT LIST:
Threat List Total:	11
	Total EOs	% of EOs
EOs with Threat Listed:	23	38 %
Mining	18	29%
ORV activity	10	16%
Recreational use (non-ORV)	4	6%
Road/trail construction/maint.	4	6%
Grazing	4	6%
Foot traffic/trampling	3	4%
Non-native plant impacts	2	3%
Wood cutting or brush clearing	2	3%
Erosion/runoff	1	1%
Improper burning regime	1	1%
Vandalism/dumping/litter	1	1%

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					61
A	B	C	D	X	U
2	14	3	0	0	42

Occurrence Status:
Historical >20 Years	34
Recent <=20 Years	27

Presence:
Presumed Extant	61
Possibly Extirpated	0
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
California (CA), Nevada (NV), Utah (UT)

California Counties and Islands: Name (Code)
Inyo (INY), Mono (MNO), San Bernardino (SBD)

Quads: Name (Quad Code)
Big Bear City (3411637), Butler Peak (3411731), Cowhorn Valley (3711821), Deep Springs Lake (3711831), Dyer (3711861), Fawnskin (3411638), Last Chance Mtn. (3711736), Last Chance Range SE (3711715), Lucerne Valley (3411648), Onyx Peak (3411626), Panamint Butte (3611743), Rattlesnake Canyon (3411636), Rimrock (3411625), Tinemaha Reservoir (3711812), Waucoba Mtn. (3711811), Waucoba Spring (3711718), Westgard Pass (3711832)

Notes:

Definitions of codes following a county and/or quad:
*		Presumed extirpated
(?)		Occurrence confirmed, but possibly extirpated
Quad and county data is imported from the CNDDB. Species may be present in other areas where conditions are favorable. These data should NOT be substituted for pre-project review or for on-site surveys.

Regional Map

Map

Presumed Extant

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CNPS Rare Plant Inventory