Species Details
Agrostis hendersonii
Henderson's bent grass
Download Report Calflora eFlora CCH CalPhotos
©2005 Steve Matson |
©2005 Steve Matson |
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Scientific Name: Agrostis hendersonii Hitchc. |
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Common Name: Henderson's bent grass |
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| Family: | Poaceae | |
| Element Code: | PMPOA040K0 | |
| USDA Plants Symbol: | AGHE3 | |
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Synonyms/Other Names: |
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| CA Rare Plant Rank: | 3.2 |
| Fed List: | None |
| State List: | None |
| Global Rank: | G2Q |
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State Rank: |
S2 |
| 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: Apr-Jun
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Elevation:
70 - 305 meters 230 - 1000 feet |
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General Habitats:
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| Microhabitat Details: | ||||||||||||||
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Microhabitat:
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Notes: Move to List 1B? Field surveys needed. Identity of BUT Co. plants remains questionable. One occurrence extirpated by construction of Comanche Reservoir; also threatened by development. Candidate for state listing in OR, but presumed extinct there. Very similar to A. microphylla; study needed. Chromosome distinction exists between these two taxa; see Bulletin of the Torrey Botanical Club 72:541-549 (1945) and Southwestern Naturalist 10:211-213 (1965) for information. See Journal of the Washington Academy of Sciences 20(15):381 (1930) for original description, Madroño 3(6):230 (1936) for first CA record, and Leaflets of Western Botany 3(12):258 (1943) for second CA record. |
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Threats: |
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Taxonomy: |
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| Threat List Total: | 7 | |
| Total EOs | % of EOs | |
| EOs with Threat Listed: | 11 | 42 % |
| THREAT LIST: | ||
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| Development | 6 | 23% |
| Grazing | 6 | 23% |
| ORV activity | 3 | 11% |
| Other | 1 | 3% |
| Vandalism/dumping/litter | 1 | 3% |
| Non-native plant impacts | 1 | 3% |
| Dam/Inundation | 1 | 3% |
| Total Occurrences: | 26 | ||||
| Element Occurrence Ranks: | |||||
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| A | B | C | D | X | U |
| 6 | 5 | 1 | 0 | 1 | 13 |
| Occurrence Status: | |||||
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| Historical >20 Years | 18 | ||||
| Recent <=20 Years | 8 | ||||
| Presence: | |||||
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| Presumed Extant | 25 | ||||
| Possibly Extirpated | 1 | ||||
| Presumed Extirpated | 0 | ||||
| California Endemic: | |||||||||||||
| California Island: | |||||||||||||
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States: Name (Code) California (CA), Oregon (OR)* |
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California Counties and Islands: Name (Code) Butte (BUT)?, Calaveras (CAL), Merced (MER), Napa (NAP), Shasta (SHA), Tehama (TEH), Tuolumne (TUO) |
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Quads: Name (Quad Code) Balls Ferry (4012242), Bella Vista (4012262), Bend (4012232), Berry Creek (3912164), Brush Creek (3912163)?, Corning (3912282), Dales (4012231), Enterprise (4012253), Haystack Mtn. (3712043), Henleyville (3912283), Mt. George (3812232), New Melones Dam (3712085), Palo Cedro (4012252), Project City (4012263), Tuscan Buttes Ne (4012241)?, Wallace (3812028)*, West of Gerber (4012213), Yosemite Lake (3712044) |
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Notes:
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Presumed Extant
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