Taxon Report
Atriplex subtilis Stutz & G.L. Chusubtle orache |
 © 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.Classification
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Scientific Name: |
Atriplex subtilis Stutz & G.L. Chu |
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Common Name: |
subtle orache |
| Family: | Chenopodiaceae |
| Element Code: | PDCHE042T0 |
| USDA Plants Symbol: | ATSU5 |
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Synonyms/Other Names: |
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Ecology and Life History
| Lifeform: | annual herb |
| Blooming Period: (Apr)Jun-Sep(Oct) | (Apr)Jun-Sep(Oct) |
| Elevation: | 40-100 (130-330) |
| General Habitats: | Valley and foothill grassland |
| Microhabitat: | Alkaline |
| Microhabitat Details: |
Conservation Status
| CA Rare Plant Rank: | 1B.2 |
| Global Rank: | G1 |
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State Rank: |
S1 |
| State List: | None |
| Fed List: | None |
| Other Status: | BLM_S |
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CRPR Changes: |
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Occurrence Data from the CNDDB
| Total Occurrences: | 24 |
| Element Occurrence Ranks: | |
| Excellent (A) | 3 |
| Good (B) | 2 |
| Fair (C) | 1 |
| Poor (D) | 0 |
| None (X) | 4 |
| Unknown (U) | 14 |
| California Endemic: True | |
| 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) | |
Threat List Data from the CNDDB
| Threat List Total: | 7 | |
| EOs with Threat Listed: | Total EOs | % of EOs |
| 11 | 46 % | |
| Development | 6 | 25% |
| Agriculture | 5 | 20% |
| Foot traffic/trampling | 3 | 12% |
| Grazing | 3 | 12% |
| Landfill | 1 | 4% |
| Mining | 1 | 4% |
| Altered flood/tidal/hydrologic regime | 1 | 4% |
Citation
California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 9 May 2025].