Taxon Details

Dudleya greenei

Greene's dudleya

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Taxon Summary:

Dudleya greenei, commonly known as Greene's dudleya, is a perennial herb in the Crassulaceae that is found only in California. It occurs within Chaparral, Cismontane woodland, Coastal bluff scrub, and Coastal scrub, growing at elevations from 1 to 245 meters. Dudleya greenei is ranked 4.2, Plants of Limited Distribution, A Watch List; Moderately threatened in California.

Classification

Scientific Name: Dudleya greenei Rose
Common Name: Greene's dudleya
Family:	Crassulaceae
Element Code:	PDCRA040E0
USDA Plants Symbol:	DUGR
Synonyms/Other Names:
Name Status:	JEF, FNA, POWO, IPNI, Tropicos

Conservation Status

CA Rare Plant Rank:	4.2
Fed List:	None
State List:	None
Global Rank:	G3
State Rank:	S3
Other Status:	SB_CalBG/RSABG
CRPR Changes:
Add Date:	1974-01-01
Date Edited:	2025-10-29

Ecology and Life History

Lifeform: perennial herb

Blooming Period: May-Jul

Elevation:
1 - 245 meters
5 - 805 feet

General Habitats:

Coastal bluff scrub
Chaparral
Cismontane woodland
Coastal scrub

Microhabitat Details: volcanic cliffs

Microhabitat:

Volcanic

Notes

Notes:
Threats: Threatened by cattle trampling and feral herbivores on SRO Isl.
Taxonomy:

Threat List Data from the CNDDB

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

Occurrence Data from the CNDDB

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

Occurrence Status:
Historical >20 Years	0
Recent <=20 Years	0

Presence:
Presumed Extant	0
Possibly Extirpated	0
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
California (CA)

California Counties and Islands: Name (Code)
Santa Barbara (SBA)

Quads: Name (Quad Code)
San Miguel Island East (3312083), San Miguel Island West (3312084), Santa Cruz Island A (3311987), Santa Cruz Island B (3311986), Santa Cruz Island C (3311985), Santa Cruz Island D (3311984), Santa Rosa Island East (3311988), Santa Rosa Island North (3312081), Santa Rosa Island South (3312071), Santa Rosa Island West (3312082)

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