©2008 F. Gauna |
©2008 Heather Davis |
©2008 F. Gauna |
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Scientific Name: Tuctoria greenei (Vasey) J. Reeder |
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Common Name: Greene's tuctoria |
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| Family: | Poaceae | |
| Element Code: | PMPOA6N010 | |
| USDA Plants Symbol: | TUGR | |
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Synonyms/Other Names: |
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| CA Rare Plant Rank: | 1B.1 |
| Fed List: | FE (1997-03-26) |
| State List: | CR (1979-09-01) |
| 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-Jul(Sep)
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Elevation:
30 - 1070 meters 100 - 3510 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, urbanization, overgrazing, and habitat fragmentation and loss. See Botanical Gazette 16:146 (1891) for original description, American Journal of Botany 69:1082-1095 (1982) for taxonomic treatment, and Conservation Genetics, pp. 1-14 (2011) for information on population genetics. |
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Threats: |
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Taxonomy: |
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| Threat List Total: | 12 | |
| Total EOs | % of EOs | |
| EOs with Threat Listed: | 42 | 84 % |
| THREAT LIST: | ||
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| Grazing | 29 | 58% |
| Agriculture | 20 | 40% |
| Non-native plant impacts | 13 | 26% |
| Foot traffic/trampling | 5 | 10% |
| Disking | 3 | 6% |
| Development | 2 | 4% |
| Altered flood/tidal/hydrologic regime | 2 | 4% |
| Biocides | 1 | 2% |
| Other | 1 | 2% |
| Road/trail construction/maint. | 1 | 2% |
| Surface water diversion | 1 | 2% |
| Mining | 1 | 2% |
| Total Occurrences: | 50 | ||||
| Element Occurrence Ranks: | |||||
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| A | B | C | D | X | U |
| 3 | 12 | 6 | 5 | 19 | 5 |
| Occurrence Status: | |||||
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| Historical >20 Years | 30 | ||||
| Recent <=20 Years | 20 | ||||
| Presence: | |||||
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| Presumed Extant | 31 | ||||
| Possibly Extirpated | 6 | ||||
| Presumed Extirpated | 13 | ||||
| California Endemic: | |||||||||||||
| California Island: | |||||||||||||
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States: Name (Code) California (CA) |
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California Counties and Islands: Name (Code) Butte (BUT), Fresno (FRE)*, Glenn (GLE), Madera (MAD)*, Merced (MER), Modoc (MOD), San Joaquin (SJQ)*, Shasta (SHA), Stanislaus (STA)*, Tehama (TEH), Tulare (TUL)* |
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Quads: Name (Quad Code) Biggs (3912146), Clovis (3611976)*, Cooperstown (3712065)*, Donica Mtn. (4112132), Escalon (3712078)*, Farmington (3712088)*, Hamlin Canyon (3912166), Haystack Mtn. (3712043), Kismet (3712011)*, Le Grand (3712022), Llano Seco (3912158), Logandale (3912242), Montpelier (3712056)*, Murken Bench (4012174), Nord (3912178), Owens Reservoir (3712032), Paulsell (3712066)*, Peters (3712181), Planada (3712033), Richardson Springs NW (3912188), Round Mountain (3611975)*, Sanger (3611965), Shippee (3912156), Vina (3912281), Waterford (3712067)*, Woodlake (3611941)* |
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Notes:
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Presumed Extant
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