Species Details

Atriplex coronata var. vallicola

Lost Hills crownscale

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Classification

Scientific Name: Atriplex coronata S. Watson var. vallicola (Hoover) S.L. Welsh
Common Name: Lost Hills crownscale
Family:	Chenopodiaceae
Element Code:	PDCHE04371
USDA Plants Symbol:
Synonyms/Other Names: Atriplex vallicola

Conservation Status

CA Rare Plant Rank:	1B.2
Fed List:	None
State List:	None
Global Rank:	G4T3
State Rank:	S3
Other Status:	BLM_S
CRPR Changes:
Add Date:	1974-01-01
Date Edited:	2021-08-25

Ecology and Life History

Lifeform: annual herb

Blooming Period: Apr-Sep

Elevation:
50 - 635 meters
165 - 2085 feet

General Habitats:

Chenopod scrub
Valley and foothill grassland
Vernal pools

Microhabitat Details:

Microhabitat:

Alkaline

Notes

Notes: Threatened by grazing, vehicles, agricultural conversion, hydrological alterations, and energy development. Plants from SLO Co. are probably an unnamed new taxon. See Leaflets of Western Botany 2(8):130-131 (1938) for original description.
Threats:
Taxonomy:

Threat List Data from the CNDDB

THREAT LIST:
Threat List Total:	11
	Total EOs	% of EOs
EOs with Threat Listed:	35	46 %
Other	16	21%
Grazing	12	15%
Road/trail construction/maint.	10	13%
Mining	9	11%
Agriculture	6	7%
Development	5	6%
ORV activity	3	3%
Erosion/runoff	1	1%
Non-native plant impacts	1	1%
Waterway bank protection/maintenance	1	1%
Recreational use (non-ORV)	1	1%

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					76
A	B	C	D	X	U
8	22	7	4	0	35

Occurrence Status:
Historical >20 Years	33
Recent <=20 Years	43

Presence:
Presumed Extant	76
Possibly Extirpated	0
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
California (CA)

California Counties and Islands: Name (Code)
Fresno (FRE), Kern (KRN), Kings (KNG), Merced (MER), Monterey (MNT), San Benito (SBT), San Luis Obispo (SLO), Tulare (TUL)

Quads: Name (Quad Code)
Avenal Gap (3511978), Cholame (3512063), Cholame Valley (3512073), Chounet Ranch (3612066), Ciervo Mtn. (3612045), Coit Ranch (3612064), Conner (3511921), East Elk Hills (3511934), Firebaugh (3612074), Jamesan (3612062), Joaquin Rocks (3612034), Laguna Seca Ranch (3612077), Levis (3612054), Lillis Ranch (3612044), Lokern (3511945), Lone Tree Well (3511976), Los Viejos (3511988), Lost Hills (3511956), Lost Hills NE (3511965), Lost Hills NW (3511966), Mendota Dam (3612073), Mercey Hot Springs (3612067), Monocline Ridge (3612055), Ortigalita Peak NW (3612088), Pastoria Creek (3411887), Reward (3511936), Sausalito School (3511982), Semitropic (3511955), Taft (3511924), Tranquillity (3612063), Tumey Hills (3612056), Tupman (3511933), Wasco NW (3511964), West Camp (3511977), West Elk Hills (3511935)

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