Species Details

Sphaeralcea rusbyi var. eremicola

Rusby's desert-mallow

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Classification

Scientific Name: Sphaeralcea rusbyi Gray var. eremicola (Jeps.) Kearn.
Common Name: Rusby's desert-mallow
Family:	Malvaceae
Element Code:	PDMAL140L1
USDA Plants Symbol:
Synonyms/Other Names:

Conservation Status

CA Rare Plant Rank:	1B.2
Fed List:	None
State List:	None
Global Rank:	G4T2
State Rank:	S2
Other Status:	BLM_S; SB_CalBG/RSABG; SB_USDA
CRPR Changes:
Add Date:	1974-01-01
Date Edited:	2021-05-26

Ecology and Life History

Lifeform: perennial herb

Blooming Period: Mar-Jun

Elevation:
975 - 1645 meters
3200 - 5395 feet

General Habitats:

Joshua tree "woodland"
Mojavean desert scrub

Microhabitat Details:

Microhabitat:

Notes

Notes: Known only from Death Valley NP (INY Co.) and near Clark Mtn. (SBD Co.). Threatened by grazing. See Manual of the Flowering Plants of California, p. 635 (1925) by W.L. Jepson for original description.
Threats:
Taxonomy:

Threat List Data from the CNDDB

THREAT LIST:
Threat List Total:	9
	Total EOs	% of EOs
EOs with Threat Listed:	32	46 %
Development	14	20%
Road/trail construction/maint.	11	15%
Grazing	10	14%
Mining	9	13%
ORV activity	9	13%
Non-native animal impacts	5	7%
Non-native plant impacts	5	7%
Other	4	5%
Foot traffic/trampling	1	1%

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					69
A	B	C	D	X	U
7	15	3	1	0	43

Occurrence Status:
Historical >20 Years	11
Recent <=20 Years	58

Presence:
Presumed Extant	69
Possibly Extirpated	0
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
California (CA)

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

Quads: Name (Quad Code)
Blackwater Mine (3511577), Cima (3511525), Cima Dome (3511535), Clark Mtn. (3511555), Cottonwood Canyon (3611753), Cow Cove (3511536), Emigrant Canyon (3611742), Emigrant Pass (3611732), Fountain Peak (3411585), Indian Cove (3411612), Ivanpah Lake (3511554), Marl Mountains (3511526), Mescal Range (3511545), Mesquite Lake (3511565), Mineral Hill (3511544), Pachalka Spring (3511556), State Line Pass (3511564), Valley Wells (3511546)

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

Click on quad for name. Hold Shift Key to use mouse scroll wheel

CNPS Rare Plant Inventory