Species Details

Chaetadelpha wheeleri

Wheeler's dune-broom

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Species Description:

Chaetadelpha wheeleri, commonly known as Wheeler's dune-broom, is a perennial rhizomatous herb in the Asteraceae that is found in California and elsewhere. It occurs within Desert dunes, Great Basin scrub, and Mojavean desert scrub, growing at elevations from 795 to 1900 meters. Chaetadelpha wheeleri is ranked 2B.2, Plants Rare, Threatened, or Endangered in California, But More Common Elsewhere; Moderately threatened in California.

Classification

Scientific Name: Chaetadelpha wheeleri Gray
Common Name: Wheeler's dune-broom
Family:	Asteraceae
Element Code:	PDAST21010
USDA Plants Symbol:	CHWH
Synonyms/Other Names:
Name Status:	JEP, FNA, POWO, IPNI, Tropicos

Conservation Status

CA Rare Plant Rank:	2B.2
Fed List:	None
State List:	None
Global Rank:	G4
State Rank:	S2
Other Status:
CRPR Changes:
Add Date:	2001-01-01
Date Edited:	2021-10-04

Ecology and Life History

Lifeform: perennial rhizomatous herb

Blooming Period: Apr-Sep

Elevation:
795 - 1900 meters
2610 - 6235 feet

General Habitats:

Desert dunes
Great Basin scrub
Mojavean desert scrub

Microhabitat Details:

Microhabitat:

Sandy

Notes

Notes: Threatened by vehicles and solar energy development. Possibly threatened by non-native plants. See Proceedings of the American Academy of Arts and Sciences 9:218 (1874) for original description, and Madroño 21(7):459-462 (1972) for taxonomic treatment.
Threats:
Taxonomy:

Threat List Data from the CNDDB

THREAT LIST:
Threat List Total:	3
	Total EOs	% of EOs
EOs with Threat Listed:	14	56 %
Non-native plant impacts	14	56%
ORV activity	9	36%
Development	5	20%

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					25
A	B	C	D	X	U
1	9	6	0	0	9

Occurrence Status:
Historical >20 Years	7
Recent <=20 Years	18

Presence:
Presumed Extant	25
Possibly Extirpated	0
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
California (CA), Nevada (NV), Oregon (OR)

California Counties and Islands: Name (Code)
Inyo (INY), Mono (MNO)

Quads: Name (Quad Code)
Benton (3711874), Calvada Springs (3511588), Chalfant Valley (3711853), Chidago Canyon (3711854), Deep Springs Lake (3711831), East of Joshua Flats (3711727), Hammil Valley (3711864), Last Chance Range SW (3711716), Mound Spring (3611518), Negit Island (3811911), Stump Spring, Nev. (3511587), Sulphur Pond (3811818), Westgard Pass (3711832), White Mtn. Peak (3711863)

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