Scientific Name: Poa rhizomata Hitchc. |
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Common Name: timber bluegrass |
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Family: | Poaceae | |
Element Code: | PMPOA4Z250 | |
USDA Plants Symbol: | PORH | |
Synonyms/Other Names: |
CA Rare Plant Rank: | 1B.3 |
Fed List: | None |
State List: | None |
Global Rank: | G3G4 |
State Rank: |
S3S4 |
Other Status: | |
CRPR Changes: changed from 4.3 to 1B.3 on 2024-02-01 |
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Add Date: | 1974-01-01 |
Date Edited: | 2024-02-06 |
Lifeform: perennial rhizomatous herb | ||||||||||||||
Blooming Period: Apr-Jul
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Elevation:
520 - 2040 meters 1705 - 6695 feet |
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General Habitats:
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Microhabitat Details: Semi-shaded moist slopes, small openings in forest | ||||||||||||||
Microhabitat:
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Notes: Extremely rare and threatened in OR. |
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Threats: Potentially threatened by logging, inappropriate grazing, trampling, and fire changes in fire regime. |
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Taxonomy: Plants on ultramafic substrates in DNT Co. are referable to Poa piperi (previously treated as a taxonomic synonym of P. rhizomata). Other similar species are P. pratensis (nonnative naturalized in CA) and P. chambersii (OR endemic). |
Threat List Total: | 0 | |
Total EOs | % of EOs | |
EOs with Threat Listed: | 0 | 0 % |
THREAT LIST: |
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Total Occurrences: | 0 | ||||
Element Occurrence Ranks: | |||||
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A | B | C | D | X | U |
0 | 0 | 0 | 0 | 0 | 0 |
Occurrence Status: | |||||
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Historical >20 Years | 0 | ||||
Recent <=20 Years | 0 |
Presence: | |||||
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Presumed Extant | 0 | ||||
Possibly Extirpated | 0 | ||||
Presumed Extirpated | 0 |
California Endemic: | |||||||||||||
California Island: | |||||||||||||
States: Name (Code) California (CA), Oregon (OR) |
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California Counties and Islands: Name (Code) |
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Quads: Name (Quad Code) |
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Notes:
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Map
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Presumed Extant
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CNPS Status Review: | Poa rhizomata Proposed Change from CRPR 4.3 to 1B.3 (2024) |
Original Description: | Flora of California [Jepson] 1(3): 155 (1912) |
Species Account: | USFS Potential Species of Conservation Concern Profile (2021) |