|
|
Scientific Name: Poa rhizomata Hitchc. |
||
|
Common Name: timber blue grass |
||
| 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 |
|
| Add Date: | 1974-01-01 |
| Date Edited: | 2024-08-06 |
| Lifeform: perennial rhizomatous herb | ||||||||||||||
Blooming Period: Apr-Jul
|
||||||||||||||
|
Elevation:
520 - 2040 meters 1705 - 6695 feet |
||||||||||||||
General Habitats:
|
||||||||||||||
| Microhabitat Details: Semi-shaded moist slopes, small openings in forest | ||||||||||||||
Microhabitat:
|
||||||||||||||
|
Notes: Extremely rare and threatened in OR. |
|
|
Threats: Potentially threatened by logging, inappropriate grazing, trampling, and fire changes in fire regime. |
|
|
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: | 3 | |
| Total EOs | % of EOs | |
| EOs with Threat Listed: | 2 | 13 % |
| THREAT LIST: | ||
|---|---|---|
| Foot traffic/trampling | 1 | 6% |
| Grazing | 1 | 6% |
| Logging | 1 | 6% |
| Total Occurrences: | 16 | ||||
| Element Occurrence Ranks: | |||||
|---|---|---|---|---|---|
| A | B | C | D | X | U |
| 0 | 2 | 0 | 0 | 0 | 14 |
| Occurrence Status: | |||||
|---|---|---|---|---|---|
| Historical >20 Years | 14 | ||||
| Recent <=20 Years | 2 | ||||
| Presence: | |||||
|---|---|---|---|---|---|
| Presumed Extant | 16 | ||||
| Possibly Extirpated | 0 | ||||
| Presumed Extirpated | 0 | ||||
| California Endemic: | |||||||||||||
| California Island: | |||||||||||||
|
States: Name (Code) California (CA), Oregon (OR) |
|||||||||||||
|
California Counties and Islands: Name (Code) Shasta (SHA), Siskiyou (SIS), Trinity (TRI) |
|||||||||||||
|
Quads: Name (Quad Code) Bark Shanty Gulch (4112345), Billys Peak (4112227), Callahan (4112237), Chicken Hawk Hill (4112214), Condrey Mtn. (4112288), Cottonwood Peak (4112286), Dillon Mtn. (4112355), Eaton Peak (4112238), Etna (4112248), Greenview (4112258), Horse Creek (4112278), Kangaroo Mtn. (4112382), McKinley Mtn. (4112277), Somes Bar (4112344), Ukonom Lake (4112353), Ukonom Mtn. (4112354), Ycatapom Peak (4112217) |
|||||||||||||
Notes:
|
|||||||||||||
Presumed Extant
Click on quad for name. Hold Shift Key to use mouse scroll wheel
| 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) |