Taxon Details

Atriplex subtilis

subtle orache

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Photo of Atriplex subtilis
© 2000 Robert E. Preston, Ph.D.
Photo of Atriplex subtilis
© 2000 Robert E. Preston, Ph.D.

Taxon Summary:

Atriplex subtilis, commonly known as subtle orache, is a annual herb in the Chenopodiaceae that is found only in California. It occurs within Valley and foothill grassland, growing at elevations from 40 to 100 meters. Atriplex subtilis is ranked 1B.2, Plants Rare, Threatened or Endangered in California and Elsewhere; Moderately threatened in California.

Lifeform: annual herb
Blooming Period: (Apr)Jun-Sep(Oct)
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Elevation:
40 - 100 meters
130 - 330 feet
General Habitats:
  • Valley and foothill grassland
Microhabitat Details:
Microhabitat:
  • Alkaline
Notes:
Threatened by agriculture. Possibly threatened by solar energy development. Not in The Jepson Manual (1993). See Madroño 44(2):184 (1997) for original description.
Threats:
Taxonomy:
Threat List Total: 7
Total EOs % of EOs
EOs with Threat Listed: 11 46 %
THREAT LIST:
Development 6 25%
Agriculture 5 20%
Foot traffic/trampling 3 12%
Grazing 3 12%
Landfill 1 4%
Total Occurrences: 24
Element Occurrence Ranks:
A B C D X U
3 2 1 0 4 14
Occurrence Status:
Historical >20 Years 22
Recent <=20 Years 2
Presence:
Presumed Extant 20
Possibly Extirpated 2
Presumed Extirpated 2
California Endemic:
California Island:
States: Name (Code)
California (CA)
California Counties and Islands: Name (Code)
Butte (BUT), Fresno (FRE), Kern (KRN), Kings (KNG), Madera (MAD), Merced (MER), Stanislaus (STA), Tulare (TUL)
Quads: Name (Quad Code)
Bliss Ranch (3712014), Bonita Ranch (3612082), Buttonwillow (3511944), Cairns Corner (3611922), Ceres (3712058), Chowchilla (3712013), Denair (3712057), El Nido (3712024), Firebaugh NE (3612083), Goshen (3611934), Gravelly Ford (3612072), Helm (3612051), Jamesan (3612062), Mendota Dam (3612073), Pennington (3912137), Pixley (3511983), Sandy Mush (3712025), Santa Rita Bridge (3712015), Sausalito School (3511982), Wasco SW (3511954), Waukena (3611925)
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.
Presumed Extant
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