Species Details

Arabis rigidissima var. rigidissima

Trinity Mountains rockcress

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Photo of Arabis rigidissima var. rigidissima

Classification

Scientific Name: Arabis rigidissima Rollins var. rigidissima
Common Name: Trinity Mountains rockcress
Family:	Brassicaceae
Element Code:	PDBRA061R2
USDA Plants Symbol:	ARRIR
Synonyms/Other Names:

Conservation Status

CA Rare Plant Rank:	1B.3
Fed List:	None
State List:	None
Global Rank:	G3T3
State Rank:	S3
Other Status:
CRPR Changes: changed from 4.3 to 1B.3 on 2012-05-07
Add Date:	1974-01-01
Date Edited:	2023-05-02

Ecology and Life History

Lifeform: perennial herb

Blooming Period: Jun-Aug

Elevation:
1190 - 2200 meters
3905 - 7220 feet

General Habitats:

Upper montane coniferous forest (gravelly, rocky)

Microhabitat Details:

Microhabitat:

Notes

Notes: Similar to Boechera suffrutescens. See Boechera rigidissima in TJM 2; varieties not treated. See Rhodora 43(511):380-381 (1941) for original description, and Novon 13(4):381-391 (2003) for revised nomenclature.
Threats:
Taxonomy: Similar to Boechera suffrutescens. See Boechera rigidissima in TJM 2; varieties not treated.

Threat List Data from the CNDDB

THREAT LIST:
Threat List Total:	0
	Total EOs	% of EOs
EOs with Threat Listed:	0	%
No threats

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					6
A	B	C	D	X	U
0	1	0	0	0	5

Occurrence Status:
Historical >20 Years	4
Recent <=20 Years	2

Presence:
Presumed Extant	6
Possibly Extirpated	0
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
California (CA)

California Counties and Islands: Name (Code)
Siskiyou (SIS), Trinity (TRI)

Quads: Name (Quad Code)
Cecil Lake (4112312), Dees Peak (4112313), Eaton Peak (4112238), English Peak (4112342), Thurston Peaks (4012382), Whisky Bill Peak (4112215)

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

Click on quad for name. Hold Shift Key to use mouse scroll wheel

Selected References

CNPS Status Review:

Proposed Rank Change from CRPR 4.3, G3T3 / S3 to 1B.3, G3T2 / S2 (2012)