Species Details
Poa atropurpurea
San Bernardino blue grass
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Species Description:
Poa atropurpurea, commonly known as San Bernardino blue grass, is a perennial rhizomatous herb in the Poaceae that is found only in California. It occurs within Meadows and seeps, growing at elevations from 1360 to 2455 meters. Poa atropurpurea is ranked 1B.2, Plants Rare, Threatened or Endangered in California and Elsewhere; Moderately threatened in California.|
Scientific Name: Poa atropurpurea Scribn. |
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Common Name: San Bernardino blue grass |
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| Family: | Poaceae | |
| Element Code: | PMPOA4Z0A0 | |
| USDA Plants Symbol: | POAT | |
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Synonyms/Other Names: |
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| Name Status: |
JEP, FNA, POWO, IPNI, Tropicos |
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| CA Rare Plant Rank: | 1B.2 |
| Fed List: | FE (1998-09-14) |
| State List: | None |
| Global Rank: | G2 |
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State Rank: |
S2 |
| Other Status: | SB_CalBG/RSABG |
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CRPR Changes: |
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| Add Date: | 1974-01-01 |
| Date Edited: | 2021-05-26 |
| Lifeform: perennial rhizomatous herb | ||||||||||||||
Blooming Period: (Apr)May-Jul(Aug)
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Elevation:
1360 - 2455 meters 4460 - 8055 feet |
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General Habitats:
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| Microhabitat Details: | ||||||||||||||
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Microhabitat:
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Notes: Known from approximately twenty occurrences in the San Bernardino Mtns. (SBD Co.) and Laguna Mtns. (SDG Co.). Threatened by development, grazing, hydrological alterations, mining, recreational activities, and vehicles, and potentially by hybridization with non-native P. pratensis. |
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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: | 19 | 70 % |
| THREAT LIST: | ||
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| Grazing | 16 | 59% |
| Development | 10 | 37% |
| Recreational use (non-ORV) | 6 | 22% |
| Non-native plant impacts | 5 | 18% |
| ORV activity | 4 | 14% |
| Other | 2 | 7% |
| Vandalism/dumping/litter | 2 | 7% |
| Foot traffic/trampling | 2 | 7% |
| Mining | 1 | 3% |
| Non-native animal impacts | 1 | 3% |
| Wood cutting or brush clearing | 1 | 3% |
| Altered flood/tidal/hydrologic regime | 1 | 3% |
| Total Occurrences: | 27 | ||||
| Element Occurrence Ranks: | |||||
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| A | B | C | D | X | U |
| 0 | 7 | 2 | 2 | 0 | 16 |
| Occurrence Status: | |||||
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| Historical >20 Years | 20 | ||||
| Recent <=20 Years | 7 | ||||
| Presence: | |||||
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| Presumed Extant | 27 | ||||
| Possibly Extirpated | 0 | ||||
| Presumed Extirpated | 0 | ||||
| California Endemic: | |||||||||||||
| California Island: | |||||||||||||
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States: Name (Code) California (CA) |
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California Counties and Islands: Name (Code) San Bernardino (SBD), San Diego (SDG) |
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Quads: Name (Quad Code) Big Bear City (3411637), Big Bear Lake (3411628), Cuyamaca Peak (3211685), Descanso (3211675), Fawnskin (3411638), Julian (3311615), Monument Peak (3211684), Moonridge (3411627), Mount Laguna (3211674), Onyx Peak (3411626), Palomar Observatory (3311637) |
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Notes:
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Presumed Extant
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