Species Details

Deinandra arida

Red Rock tarplant

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Species Description:

Deinandra arida, commonly known as Red Rock tarplant, is a annual herb in the Asteraceae that is found only in California. It occurs within Mojavean desert scrub (clay, and volcanic tuff), growing at elevations from 300 to 950 meters. Deinandra arida is ranked 1B.2, Plants Rare, Threatened or Endangered in California and Elsewhere; Moderately threatened in California.

Classification

Scientific Name: Deinandra arida (Keck) B.G. Baldwin
Common Name: Red Rock tarplant
Family:	Asteraceae
Element Code:	PDAST4R010
USDA Plants Symbol:	DEAR8
Synonyms/Other Names: Hemizonia arida Keck
Name Status:	JEP, FNA, POWO, IPNI, Tropicos

Conservation Status

CA Rare Plant Rank:	1B.2
Fed List:	None
State List:	CR (1982-07-01)
Global Rank:	G1
State Rank:	S1
Other Status:	BLM_S; SB_CalBG/RSABG
CRPR Changes:
Add Date:	1974-01-01
Date Edited:	2024-11-05

Ecology and Life History

Lifeform: annual herb

Blooming Period: Apr-Nov

Elevation:
300 - 950 meters
985 - 3115 feet

General Habitats:

Mojavean desert scrub (clay, volcanic tuff)

Microhabitat Details:

Microhabitat:

Notes

Notes: Known from fewer than ten occurrences near Red Rock Cyn. in the Mojave Desert. State-listed as Hemizonia arida; see this name in The Jepson Manual. See Aliso 4(1):109 (1958) for original description, and Novon 9:462-471 (1999) for revised nomenclature.
Threats:
Taxonomy:

Threat List Data from the CNDDB

THREAT LIST:
Threat List Total:	5
	Total EOs	% of EOs
EOs with Threat Listed:	5	83 %
ORV activity	5	83%
Non-native plant impacts	2	33%
Mining	1	16%
Recreational use (non-ORV)	1	16%
Road/trail construction/maint.	1	16%

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					6
A	B	C	D	X	U
1	2	2	0	0	1

Occurrence Status:
Historical >20 Years	5
Recent <=20 Years	1

Presence:
Presumed Extant	6
Possibly Extirpated	0
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
California (CA)

California Counties and Islands: Name (Code)
Kern (KRN)

Quads: Name (Quad Code)
Cantil (3511738), Saltdale NW (3511748)

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