Species Details

Dudleya abramsii ssp. murina

mouse-gray dudleya

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Chris Winchell

Classification

Scientific Name: Dudleya abramsii Rose ssp. murina (Eastw.) Moran
Common Name: mouse-gray dudleya
Family:	Crassulaceae
Element Code:	PDCRA04012
USDA Plants Symbol:	DUABM
Synonyms/Other Names:

Conservation Status

CA Rare Plant Rank:	1B.1
Fed List:	None
State List:	None
Global Rank:	G4T2
State Rank:	S2
Other Status:	BLM_S; SB_CalBG/RSABG
CRPR Changes: changed from 1B.3 to 1B.1 on 2023-06-02
Add Date:	1980-01-01
Date Edited:	2024-11-05

Ecology and Life History

Lifeform: perennial leaf

Blooming Period: May-Jun

Elevation:
90 - 525 meters
295 - 1725 feet

General Habitats:

Chaparral
Cismontane woodland
Valley and foothill grassland

Microhabitat Details:

Microhabitat:

Serpentine

Notes

Notes: Threatened by horticultural collecting and grazing. Potentially threatened by pipeline construction and non-native plants.
Threats:
Taxonomy:

Threat List Data from the CNDDB

THREAT LIST:
Threat List Total:	12
	Total EOs	% of EOs
EOs with Threat Listed:	20	56 %
Grazing	12	33%
Development	7	19%
Non-native plant impacts	4	11%
Road/trail construction/maint.	4	11%
Other	3	8%
Feral pigs	3	8%
Improper burning regime	3	8%
Military operations	3	8%
Over-collecting/poaching	2	5%
Mining	1	2%
Foot traffic/trampling	1	2%
Erosion/runoff	1	2%

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					36
A	B	C	D	X	U
4	13	4	2	0	13

Occurrence Status:
Historical >20 Years	23
Recent <=20 Years	13

Presence:
Presumed Extant	36
Possibly Extirpated	0
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
California (CA)

California Counties and Islands: Name (Code)
San Luis Obispo (SLO)

Quads: Name (Quad Code)
Arroyo Grande NE (3512025), Atascadero (3512046), Cayucos (3512048), Lopez Mtn. (3512035), Morro Bay North (3512047), Morro Bay South (3512037), Pismo Beach (3512026), Port San Luis (3512027), San Luis Obispo (3512036), Santa Margarita Lake (3512034)

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

CNPS Rare Plant Inventory