Taxon Details

Psorothamnus arborescens var. arborescens

Mojave indigo-bush

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Taxon Summary:

Psorothamnus arborescens var. arborescens, commonly known as Mojave indigo-bush, is a perennial deciduous shrub in the Fabaceae that is found in California and elsewhere. It occurs within Mojavean desert scrub, and Riparian scrub, growing at elevations from 400 to 1185 meters. Psorothamnus arborescens var. arborescens is ranked 4.3, Plants of Limited Distribution, A Watch List; Not very threatened in California.

Classification

Scientific Name: Psorothamnus arborescens (Gray) Barneby var. arborescens
Common Name: Mojave indigo-bush
Family:	Fabaceae
Element Code:	PDFAB3C011
USDA Plants Symbol:	PSARA
Synonyms/Other Names: Dalea arborescens
Name Status:	JEF, FNA, POWO, IPNI, Tropicos

Conservation Status

CA Rare Plant Rank:	4.3
Fed List:	None
State List:	None
Global Rank:	G5T4
State Rank:	S4
Other Status:	SB_USDA
CRPR Changes:
Add Date:	1974-01-01
Date Edited:	2021-05-26

Ecology and Life History

Lifeform: perennial deciduous shrub

Blooming Period: Apr-May

Elevation:
400 - 1185 meters
1310 - 3890 feet

General Habitats:

Mojavean desert scrub
Riparian scrub

Microhabitat Details:

Microhabitat:

Notes

Notes: Potentially threatened by proposed expansion of Ft. Irwin (DOD). See Memoirs of the New York Botanical Garden 27:182 (1977) for taxonomic treatment.
Threats:
Taxonomy:

Threat List Data from the CNDDB

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

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					0
A	B	C	D	X	U
0	0	0	0	0	0

Occurrence Status:
Historical >20 Years	0
Recent <=20 Years	0

Presence:
Presumed Extant	0
Possibly Extirpated	0
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
California (CA), Sonora, Mexico (SO)

California Counties and Islands: Name (Code)
Inyo (INY), San Bernardino (SBD)

Quads: Name (Quad Code)
Barstow SE (3411771), Black Hills (3511743), East of Goldstone (3511637), Fort Irwin (3511636), Haiwee Reservoirs (3611728), Paradise Range (3511627), Tiefort Mountains (3511635)

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