Taxon Report

Euphorbia revoluta Engelm.

revolute spurge

Print Report

Taxon Summary

Euphorbia revoluta, commonly known as revolute spurge, is a annual herb in the Euphorbiaceae that is found in California and elsewhere. It occurs within Mojavean desert scrub, growing at elevations from 1095 to 3100 meters. Euphorbia revoluta is ranked 4.3, Plants of Limited Distribution, A Watch List; Not very threatened in California.

Classification


Scientific Name:	Euphorbia revoluta Engelm.
Common Name:	revolute spurge
Family:	Euphorbiaceae
Element Code:	PDEUP0D230
USDA Plants Symbol:
Synonyms/Other Names:	Chamaesyce revoluta (Engelm.) Small

Ecology and Life History


Lifeform:	annual herb
Blooming Period: Aug-Sep	Aug-Sep
Elevation:	1095-3100 (3595-10170)
General Habitats:	Mojavean desert scrub
Microhabitat:
Microhabitat Details:

Conservation Status


CA Rare Plant Rank:	4.3
Global Rank:	G5
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: False
California Counties and Islands: Name (Code)
Riverside (RIV), San Bernardino (SBD), San Diego (SDG)
Quads: Name (Quad Code)
Castle Peaks (3511532), Clark Mtn. (3511555), Colton Well (3411584), Columbia Mtn. (3511514), Fountain Peak (3411585), Grand View Mine (3411657), Hackberry Mountain (3511512), Hart Peak (3511531), Ivanpah (3511533), Ivanpah Lake (3511554), Mescal Range (3511545), Mesquite Mountains (3511566), Old Woman Statue (3411552), Ord Mountain (3411667), Pachalka Spring (3511556), Toro Peak (3311654), Whale Peak (3311613)

Threat List Data from the CNDDB


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

Notes



See Report of the United States and Mexican Boundary, Botany 2(1):186 (1859) for original description, Madroño 44(2):205 (1997) for occurrence information, and Taxon 55:397-420 (2006) for taxonomic 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 1 February 2025].