Taxon Report

Dudleya gnoma S. McCabe

munchkin dudleya

Print Report

John Game

Taxon Summary

Dudleya gnoma, commonly known as munchkin dudleya, is a perennial herb in the Crassulaceae that is found only in California. It occurs within Coastal bluff scrub (gravelly, and volcanic), growing at elevations from 20 to 70 meters. Dudleya gnoma is ranked 1B.1, Plants Rare, Threatened or Endangered in California and Elsewhere; Seriously threatened in California.

Classification


Scientific Name:	Dudleya gnoma S. McCabe
Common Name:	munchkin dudleya
Family:	Crassulaceae
Element Code:	PDCRA040W0
USDA Plants Symbol:	DUGN
Synonyms/Other Names:

Ecology and Life History


Lifeform:	perennial herb
Blooming Period: May	May
Elevation:	20-70 (65-230)
General Habitats:	Coastal bluff scrub
Microhabitat:
Microhabitat Details:

Conservation Status


CA Rare Plant Rank:	1B.1
Global Rank:	G1
State Rank:	S1
State List:	None
Fed List:	None
Other Status:
CRPR Changes:

Occurrence Data from the CNDDB


Total Occurrences:	1
Element Occurrence Ranks:
Excellent (A)	0
Good (B)	0
Fair (C)	0
Poor (D)	0
None (X)	0
Unknown (U)	1

Location


California Endemic: True
California Counties and Islands: Name (Code)
Santa Barbara (SBA)
Quads: Name (Quad Code)
Santa Rosa Island East (3311988)

Threat List Data from the CNDDB


Threat List Total:	3
EOs with Threat Listed:	Total EOs	% of EOs
	1	100 %
Erosion/runoff	1	100%
Foot traffic/trampling	1	100%
Grazing	1	100%

Notes



Known from only one occurrence near East Pt., with only 3200 individuals as of 1994.
Threats:
Threatened by erosion. Possibly threatened by non-native plants. Most of population has been fenced by NPS as of 1994, and pigs and cattle have been removed from the island.
Taxonomy:
See Madroño 44(1):49 (1997) for original description.

Selected References

Citation California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 14 June 2025].