Taxon Details

Euphorbia arizonica

Arizona spurge

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Taxon Summary:

Euphorbia arizonica, commonly known as Arizona spurge, is a perennial herb in the Euphorbiaceae that is found in California and elsewhere. It occurs within Sonoran desert scrub, growing at elevations from 50 to 300 meters. Euphorbia arizonica is ranked 2B.3, Plants Rare, Threatened, or Endangered in California, But More Common Elsewhere; Not very threatened in California.

Classification

Scientific Name: Euphorbia arizonica Engelm.
Common Name: Arizona spurge
Family:	Euphorbiaceae
Element Code:	PDEUP0D060
USDA Plants Symbol:
Synonyms/Other Names: Chamaesyce arizonica (Engelm.) Arthur
Name Status:	JEF, FNA, POWO, IPNI, Tropicos

Conservation Status

CA Rare Plant Rank:	2B.3
Fed List:	None
State List:	None
Global Rank:	G5
State Rank:	S3
Other Status:
CRPR Changes:
Add Date:	1980-01-01
Date Edited:	2021-05-26

Ecology and Life History

Lifeform: perennial herb

Blooming Period: Mar-Apr

Elevation:
50 - 300 meters
165 - 985 feet

General Habitats:

Sonoran desert scrub (sandy)

Microhabitat Details:

Microhabitat:

Notes

Notes: Undocumented in IMP Co.; need quads. See Report of the United States and Mexican Boundary, Botany 2(1):186 (1859) for original description, Madroño 32(3):187-189 (1985) for alternative nomenclature, and Taxon 55:397-420 (2006) for taxonomic treatment.
Threats:
Taxonomy:

Threat List Data from the CNDDB

THREAT LIST:
Threat List Total:	1
	Total EOs	% of EOs
EOs with Threat Listed:	1	9 %
Foot traffic/trampling	1	9%

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					11
A	B	C	D	X	U
1	2	0	0	0	8

Occurrence Status:
Historical >20 Years	7
Recent <=20 Years	4

Presence:
Presumed Extant	11
Possibly Extirpated	0
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
Arizona (AZ), Baja California (BA), California (CA), New Mexico (NM), Texas (TX)

California Counties and Islands: Name (Code)
Imperial (IMP), Riverside (RIV), San Diego (SDG)

Quads: Name (Quad Code)
Borrego Palm Canyon (3311634), Carrizo Mtn. (3211671), Cathedral City (3311674), Clark Lake NE (3311643), Collins Valley (3311644), East Deception Canyon (3311683), In-ko-pah Gorge (3211661), Myoma (3311673), Palm Springs (3311675), Palm View Peak (3311665), Seven Palms Valley (3311684), Sweeney Pass (3211672), Tubb Canyon (3311624)

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