Taxon Report
Orcuttia viscida (Hoov.) J. ReederSacramento Orcutt grass |
 © Rick York and CNPS |
Taxon Summary
Orcuttia viscida, commonly known as Sacramento Orcutt grass, is a annual herb in the Poaceae that is found only in California. It occurs within Vernal pools, growing at elevations from 30 to 100 meters. Orcuttia viscida is ranked 1B.1, Plants Rare, Threatened or Endangered in California and Elsewhere; Seriously threatened in California.Classification
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Scientific Name: |
Orcuttia viscida (Hoov.) J. Reeder |
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Common Name: |
Sacramento Orcutt grass |
| Family: | Poaceae |
| Element Code: | PMPOA4G070 |
| USDA Plants Symbol: | ORVI2 |
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Synonyms/Other Names: |
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Ecology and Life History
| Lifeform: | annual herb |
| Blooming Period: Apr-Jul(Sep) | Apr-Jul(Sep) |
| Elevation: | 30-100 (100-330) |
| General Habitats: | Vernal pools |
| Microhabitat: | |
| Microhabitat Details: |
Conservation Status
| CA Rare Plant Rank: | 1B.1 |
| Global Rank: | G1 |
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State Rank: |
S1 |
| State List: | CE |
| Fed List: | FE |
| Other Status: | SB_CalBG/RSABG |
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CRPR Changes: |
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Occurrence Data from the CNDDB
| Total Occurrences: | 18 |
| Element Occurrence Ranks: | |
| Excellent (A) | 2 |
| Good (B) | 6 |
| Fair (C) | 1 |
| Poor (D) | 0 |
| None (X) | 2 |
| Unknown (U) | 7 |
| California Endemic: True | |
| California Counties and Islands: Name (Code) | |
| Sacramento (SAC) | |
| Quads: Name (Quad Code) | |
| Buffalo Creek (3812152), Carmichael (3812153), Elk Grove (3812143), Folsom (3812162), Goose Creek (3812131) | |
Threat List Data from the CNDDB
| Threat List Total: | 13 | |
| EOs with Threat Listed: | Total EOs | % of EOs |
| 10 | 56 % | |
| Non-native plant impacts | 7 | 38% |
| Grazing | 6 | 33% |
| Altered flood/tidal/hydrologic regime | 4 | 22% |
| Development | 4 | 22% |
| Foot traffic/trampling | 2 | 11% |
| ORV activity | 2 | 11% |
| Road/trail construction/maint. | 2 | 11% |
| Insufficient population/stand size | 1 | 5% |
| Landfill | 1 | 5% |
| Other | 1 | 5% |
| Recreational use (non-ORV) | 1 | 5% |
| Agriculture | 1 | 5% |
| Erosion/runoff | 1 | 5% |
Notes
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Seriously threatened by agriculture, urbanization, overgrazing, vehicles, and non-native plants. Protected in part at Phoenix Field ER (DFG). See Bulletin of the Torrey Botanical Club |
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Threats: |
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Taxonomy: |
Citation
California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 15 November 2025].