Taxon Report
Poa diaboli Soreng & KeilDiablo Canyon blue grass |
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Taxon Summary
Poa diaboli, commonly known as Diablo Canyon blue grass, is a perennial rhizomatous herb in the Poaceae that is found only in California. It occurs within Chaparral (mesic), Cismontane woodland, Closed-cone coniferous forest, and Coastal scrub, growing at elevations from 120 to 400 meters. Poa diaboli is ranked 1B.2, Plants Rare, Threatened or Endangered in California and Elsewhere; Moderately threatened in California.Classification
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Scientific Name: |
Poa diaboli Soreng & Keil |
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Common Name: |
Diablo Canyon blue grass |
| Family: | Poaceae |
| Element Code: | PMPOA4Z390 |
| USDA Plants Symbol: | |
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Synonyms/Other Names: |
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Ecology and Life History
| Lifeform: | perennial rhizomatous herb |
| Blooming Period: Mar-Apr | Mar-Apr |
| Elevation: | 120-400 (395-1310) |
| General Habitats: | Chaparral, Cismontane woodland, Closed-cone coniferous forest, Coastal scrub |
| Microhabitat: | Burned areas (sometimes), Shale |
| Microhabitat Details: |
Conservation Status
| CA Rare Plant Rank: | 1B.2 |
| Global Rank: | G2 |
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State Rank: |
S2 |
| State List: | None |
| Fed List: | None |
| Other Status: | BLM_S |
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CRPR Changes: |
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Occurrence Data from the CNDDB
| Total Occurrences: | 6 |
| Element Occurrence Ranks: | |
| Excellent (A) | 0 |
| Good (B) | 0 |
| Fair (C) | 0 |
| Poor (D) | 0 |
| None (X) | 0 |
| Unknown (U) | 6 |
| California Endemic: True | |
| California Counties and Islands: Name (Code) | |
| San Luis Obispo (SLO) | |
| Quads: Name (Quad Code) | |
| Morro Bay South (3512037), Port San Luis (3512027) | |
Threat List Data from the CNDDB
| Threat List Total: | 2 | |
| EOs with Threat Listed: | Total EOs | % of EOs |
| 2 | 33 % | |
| Grazing | 1 | 16% |
| Non-native plant impacts | 1 | 16% |
Selected References
| CRPR List Addition on 2005-02-22 |
Citation
California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 20 November 2025].