Taxon Report

Dudleya abramsii Rose ssp. calcicola (Bartel & Shevock) K.M. Nakai

limestone dudleya

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Taxon Summary

Dudleya abramsii ssp. calcicola, commonly known as limestone dudleya, is a perennial herb in the Crassulaceae that is found only in California. It occurs within Chaparral, and Pinyon and juniper woodland, growing at elevations from 500 to 2600 meters. Dudleya abramsii ssp. calcicola is ranked 4.3, Plants of Limited Distribution, A Watch List; Not very threatened in California.

  Classification
Scientific Name:
 Dudleya abramsii Rose ssp. calcicola (Bartel & Shevock) K.M. Nakai
Common Name:
 limestone dudleya
Family: Crassulaceae
Element Code: PDCRA040Y0
USDA Plants Symbol:
Synonyms/Other Names:
  • Dudleya calcicola

Ecology and Life History
Lifeform: perennial herb
Blooming Period: Apr-Aug Apr-Aug
Elevation: 500-2600 (1640-8530)
General Habitats: Chaparral, Pinyon and juniper woodland
Microhabitat: Carbonate
Microhabitat Details:

Conservation Status
CA Rare Plant Rank: 4.3
Global Rank: G4T4
State Rank:
 S4
State List: None
Fed List: None
Other Status: SB_CalBG/RSABG
CRPR Changes:

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

Location
California Endemic:  True
California Counties and Islands: Name (Code)
Fresno (FRE), Kern (KRN), Tulare (TUL)
Quads: Name (Quad Code)
Cache Peak (3511822), Camp Wishon (3611826), Cannell Peak (3511873), Cinco (3511831), Claraville (3511843), Cross Mountain (3511832), Emerald Mtn. (3511833), Fairview (3511884), Hume (3611878), Kernville (3511874), Lake Isabella North (3511864), Lake Isabella South (3511854), Lamont Peak (3511871), Loraine (3511834), Miracle Hot Springs (3511855), Monolith (3511813), Ninemile Canyon (3511778), Oiler Peak (3511835), Onyx (3511862), Owens Peak (3511768), Piute Peak (3511844), Tehachapi North (3511824), Verplank Ridge (3611971), Walker Pass (3511861), Winters Ridge (3411886), Woolstalf Creek (3511853)

Threat List Data from the CNDDB

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

Notes
Possibly threatened by energy development. See Madroño 30(4):210-216 (1983) for original description and 34(4):334-353 (1987) for alternate treatment.
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 20 April 2025].