Taxon Report
Parnassia cirrata Piper var. cirrataSan Bernardino grass-of-Parnassus |
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Taxon Summary
Parnassia cirrata var. cirrata, commonly known as San Bernardino grass-of-Parnassus, is a perennial herb in the Parnassiaceae that is found only in California. It occurs within Lower montane coniferous forest, Meadows and seeps, and Upper montane coniferous forest, growing at elevations from 1250 to 2440 meters. Parnassia cirrata var. cirrata is ranked 1B.3, Plants Rare, Threatened or Endangered in California and Elsewhere; Not very threatened in California.Classification
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Scientific Name: |
Parnassia cirrata Piper var. cirrata |
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Common Name: |
San Bernardino grass-of-Parnassus |
| Family: | Parnassiaceae |
| Element Code: | PDSAX0P030 |
| USDA Plants Symbol: | |
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Synonyms/Other Names: |
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Ecology and Life History
| Lifeform: | perennial herb |
| Blooming Period: Aug-Sep | Aug-Sep |
| Elevation: | 1250-2440 (4100-8005) |
| General Habitats: | Lower montane coniferous forest, Meadows and seeps, Upper montane coniferous forest |
| Microhabitat: | Mesic, Streambanks |
| Microhabitat Details: | sometimes calcareous |
Conservation Status
| CA Rare Plant Rank: | 1B.3 |
| Global Rank: | G5T2 |
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State Rank: |
S2 |
| State List: | None |
| Fed List: | None |
| Other Status: | SB_CalBG/RSABG; USFS_S |
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CRPR Changes: |
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Occurrence Data from the CNDDB
| Total Occurrences: | 8 |
| Element Occurrence Ranks: | |
| Excellent (A) | 0 |
| Good (B) | 0 |
| Fair (C) | 0 |
| Poor (D) | 0 |
| None (X) | 0 |
| Unknown (U) | 8 |
| California Endemic: True | |
| California Counties and Islands: Name (Code) | |
| Los Angeles (LAX), San Bernardino (SBD) | |
| Quads: Name (Quad Code) | |
| Crystal Lake (3411737), Forest Falls (3411618), Mount San Antonio (3411736), San Gorgonio Mtn. (3411617) | |
Threat List Data from the CNDDB
| Threat List Total: | 3 | |
| EOs with Threat Listed: | Total EOs | % of EOs |
| 2 | 25 % | |
| Foot traffic/trampling | 1 | 12% |
| Mining | 1 | 12% |
| Recreational use (non-ORV) | 1 | 12% |
Notes
| Known in CA only from the San Gabriel and San Bernardino mountains. How common is plant in Mexico? Possibly threatened by recreational activities. See Parnassia cirrata in The Jepson Manual (1993). See Intermountain Flora 3A: 61 (1997) for current treatment and Erythea 7(1):128 (1899) for original description. |
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Threats: |
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Taxonomy: |
Citation
California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 12 March 2025].