Taxon Report

Dudleya abramsii Rose ssp. setchellii (Jeps.) Morin

Santa Clara Valley dudleya

Print Report

Taxon Summary

Dudleya abramsii ssp. setchellii, commonly known as Santa Clara Valley dudleya, is a perennial herb in the Crassulaceae that is found only in California. It occurs within Cismontane woodland, and Valley and foothill grassland, growing at elevations from 60 to 535 meters. Dudleya abramsii ssp. setchellii is ranked 1B.1, Plants Rare, Threatened or Endangered in California and Elsewhere; Seriously threatened in California.

Classification


Scientific Name:	Dudleya abramsii Rose ssp. setchellii (Jeps.) Morin
Common Name:	Santa Clara Valley dudleya
Family:	Crassulaceae
Element Code:	PDCRA040Z0
USDA Plants Symbol:
Synonyms/Other Names:	Dudleya setchellii

Ecology and Life History


Lifeform:	perennial herb
Blooming Period: Apr-Oct	Apr-Oct
Elevation:	60-535 (195-1755)
General Habitats:	Cismontane woodland, Valley and foothill grassland
Microhabitat:	Rocky, Serpentine
Microhabitat Details:

Conservation Status


CA Rare Plant Rank:	1B.1
Global Rank:	G4T2
State Rank:	S2
State List:	None
Fed List:	FE
Other Status:	SB_CalBG/RSABG
CRPR Changes:

Occurrence Data from the CNDDB


Total Occurrences:	60
Element Occurrence Ranks:
Excellent (A)	16
Good (B)	23
Fair (C)	7
Poor (D)	3
None (X)	0
Unknown (U)	11

Location


California Endemic: True
California Counties and Islands: Name (Code)
Santa Clara (SCL)
Quads: Name (Quad Code)
Gilroy (3712115), Gilroy Hot Springs (3712114), Lick Observatory (3712136), Los Gatos (3712128), Mississippi Creek (3712124), Morgan Hill (3712126), Mt. Madonna (3712116), Mt. Sizer (3712125), Pacheco Peak (3712113), San Jose East (3712137), Santa Teresa Hills (3712127)

Threat List Data from the CNDDB


Threat List Total:	18
EOs with Threat Listed:	Total EOs	% of EOs
	47	78 %
Development	18	30%
Non-native plant impacts	17	28%
Grazing	14	23%
Road/trail construction/maint.	8	13%
Other	5	8%
ORV activity	4	6%
Foot traffic/trampling	4	6%
Erosion/runoff	3	5%
Feral pigs	2	3%
Improper burning regime	2	3%
Insufficient population/stand size	2	3%
Recreational use (non-ORV)	2	3%
Mining	2	3%
Waterway bank protection/maintenance	2	3%
Vandalism/dumping/litter	1	1%
Landfill	1	1%
Hybridization	1	1%
Biocides	1	1%

Notes



Threatened by urbanization, development, vehicles, non-native plants, and grazing.
Threats:

Taxonomy:

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 30 January 2025].