Taxon Report
Poa sierrae J.T. HowellSierra blue grass |
 © 2012 Belinda Lo |
Taxon Summary
Poa sierrae, commonly known as Sierra blue grass, is a perennial rhizomatous herb in the Poaceae that is found only in California. It occurs within Lower montane coniferous forest, growing at elevations from 365 to 1500 meters. Poa sierrae is ranked 1B.3, Plants Rare, Threatened or Endangered in California and Elsewhere; Not very threatened in California.Classification
|
Scientific Name: |
Poa sierrae J.T. Howell |
|
Common Name: |
Sierra blue grass |
| Family: | Poaceae |
| Element Code: | PMPOA4Z310 |
| USDA Plants Symbol: | POSI6 |
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Synonyms/Other Names: |
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Ecology and Life History
| Lifeform: | perennial rhizomatous herb |
| Blooming Period: Apr-Jul | Apr-Jul |
| Elevation: | 365-1500 (1200-4920) |
| General Habitats: | Lower montane coniferous forest |
| Microhabitat: | Openings |
| Microhabitat Details: |
Conservation Status
| CA Rare Plant Rank: | 1B.3 |
| Global Rank: | G3 |
|
State Rank: |
S3 |
| State List: | None |
| Fed List: | None |
| Other Status: | BLM_S; USFS_S |
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CRPR Changes: |
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Occurrence Data from the CNDDB
| Total Occurrences: | 129 |
| Element Occurrence Ranks: | |
| Excellent (A) | 15 |
| Good (B) | 51 |
| Fair (C) | 10 |
| Poor (D) | 6 |
| None (X) | 0 |
| Unknown (U) | 47 |
| California Endemic: True | |
| California Counties and Islands: Name (Code) | |
| Butte (BUT), El Dorado (ELD), Nevada (NEV), Placer (PLA), Plumas (PLU), Shasta (SHA), Sierra (SIE) | |
| Quads: Name (Quad Code) | |
| Alleghany (3912047), Berry Creek (3912164), Blue Canyon (3912036), Brush Creek (3912163), Cascade (3912162), Chicago Park (3912028), Colfax (3912018), Devil Peak (3812085), Devils Rock (4012271), Dogwood Peak (3912171), Downieville (3912057), Duncan Peak (3912025), Dutch Flat (3912027), Forbestown (3912153), Foresthill (3912017), Georgetown (3812087), Greek Store (3912015), Michigan Bluff (3912016), Montgomery Creek (4012178), Pulga (3912174), Robbs Peak (3812084), Soapstone Hill (3912173), Storrie (3912183), Tunnel Hill (3812086), Washington (3912037), Westville (3912026) | |
Threat List Data from the CNDDB
| Threat List Total: | 15 | |
| EOs with Threat Listed: | Total EOs | % of EOs |
| 75 | 58 % | |
| Logging | 38 | 29% |
| Road/trail construction/maint. | 32 | 24% |
| Erosion/runoff | 10 | 7% |
| Grazing | 8 | 6% |
| Improper burning regime | 7 | 5% |
| Other | 7 | 5% |
| Foot traffic/trampling | 6 | 4% |
| ORV activity | 5 | 3% |
| Wood cutting or brush clearing | 5 | 3% |
| Recreational use (non-ORV) | 4 | 3% |
| Mining | 4 | 3% |
| Non-native plant impacts | 3 | 2% |
| Biocides | 2 | 1% |
| Dam/Inundation | 1 | 0% |
| Vandalism/dumping/litter | 1 | 0% |
Selected References
| CRPR List Addition on 2010-06-10 |
Citation
California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 27 January 2025].