Species Details
Neostapfia colusana
Colusa grass
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Scientific Name: Neostapfia colusana (Davy) Davy |
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Common Name: Colusa grass |
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| Family: | Poaceae | |
| Element Code: | PMPOA4C010 | |
| USDA Plants Symbol: | NECO2 | |
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Synonyms/Other Names: |
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| CA Rare Plant Rank: | 1B.1 |
| Fed List: | FT (1997-03-26) |
| State List: | CE (1979-11-01) |
| Global Rank: | G1 |
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State Rank: |
S1 |
| Other Status: | |
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CRPR Changes: |
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| Add Date: | 1974-01-01 |
| Date Edited: | 2021-05-26 |
| Lifeform: annual herb | ||||||||||||||
Blooming Period: May-Aug
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Elevation:
5 - 200 meters 15 - 655 feet |
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General Habitats:
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| Microhabitat Details: | ||||||||||||||
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Microhabitat:
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Notes: Threatened by agriculture, development, overgrazing, hydrological alterations, non-native plants, and habitat fragmentation and loss. See Erythea 6:110-113 (1898) for original description, Fremontia 4(3):22-23 (1976) for species account and habitat information, and Conservation Genetics (2011) pp. 1-14 for population genetic information. |
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Threats: |
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Taxonomy: |
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| Threat List Total: | 16 | |
| Total EOs | % of EOs | |
| EOs with Threat Listed: | 63 | 95 % |
| THREAT LIST: | ||
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| Grazing | 54 | 81% |
| Agriculture | 24 | 36% |
| Non-native plant impacts | 16 | 24% |
| Foot traffic/trampling | 10 | 15% |
| Altered flood/tidal/hydrologic regime | 9 | 13% |
| Other | 7 | 10% |
| Disking | 5 | 7% |
| Dam/Inundation | 4 | 6% |
| Erosion/runoff | 3 | 4% |
| Biocides | 2 | 3% |
| ORV activity | 2 | 3% |
| Pollution | 1 | 1% |
| Road/trail construction/maint. | 1 | 1% |
| Surface water diversion | 1 | 1% |
| Development | 1 | 1% |
| Non-native animal impacts | 1 | 1% |
| Total Occurrences: | 66 | ||||
| Element Occurrence Ranks: | |||||
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| A | B | C | D | X | U |
| 3 | 13 | 21 | 3 | 21 | 5 |
| Occurrence Status: | |||||
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| Historical >20 Years | 38 | ||||
| Recent <=20 Years | 28 | ||||
| Presence: | |||||
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| Presumed Extant | 45 | ||||
| Possibly Extirpated | 7 | ||||
| Presumed Extirpated | 14 | ||||
| California Endemic: | |||||||||||||
| California Island: | |||||||||||||
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States: Name (Code) California (CA) |
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California Counties and Islands: Name (Code) Colusa (COL)*, Glenn (GLE), Merced (MER), Solano (SOL), Stanislaus (STA), Yolo (YOL) |
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Quads: Name (Quad Code) Arena (3712036), Atwater (3712035), Bachelor Valley (3712087), Cooperstown (3712065), Dozier (3812137), El Nido (3712024)*, Haystack Mtn. (3712043), Knights Ferry (3712076), Logandale (3912242), Merced (3712034), Montpelier (3712056), Owens Reservoir (3712032), Paulsell (3712066), Planada (3712033), Princeton (3912241)*, Sandy Mush (3712025), Saxon (3812146), Turlock Lake (3712055), Turner Ranch (3712026), Waterford (3712067)*, Yosemite Lake (3712044) |
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Notes:
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Presumed Extant
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