Species Details

Atriplex coronata var. vallicola

Lost Hills crownscale

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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:
Lifeform: annual herb
Blooming Period: Apr-Sep
50 - 635 meters
165 - 2085 feet
General Habitats:
  • Chenopod scrub
  • Valley and foothill grassland
  • Vernal pools
Microhabitat Details:
  • Alkaline
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.
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%
Total Occurrences: 76
Element Occurrence Ranks:
8 22 7 4 0 35
Occurrence Status:
Historical >20 Years 33
Recent <=20 Years 43
Presumed Extant 76
Possibly Extirpated 0
Presumed Extirpated 0
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)
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.
Presumed Extant
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