Taxon Report
Platismatia lacunosa (Ach.) W. L. Culb. & C. F. Culb.crinkled rag lichen |
 © 2014 Chris Wagner |
Taxon Summary
Platismatia lacunosa, commonly known as crinkled rag lichen, is a foliose lichen (epiphytic) in the Parmeliaceae that is found in California and elsewhere. It occurs within North Coast coniferous forest, and Riparian woodland, growing at elevations from 20 to 2000 meters. Platismatia lacunosa is ranked 2B.3, Plants Rare, Threatened, or Endangered in California, But More Common Elsewhere; Not very threatened in California.Classification
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Scientific Name: |
Platismatia lacunosa (Ach.) W. L. Culb. & C. F. Culb. |
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Common Name: |
crinkled rag lichen |
| Family: | Parmeliaceae |
| Element Code: | NLLEC2Q010 |
| USDA Plants Symbol: | PLLA6 |
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Synonyms/Other Names: |
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Ecology and Life History
| Lifeform: | foliose lichen (epiphytic) |
| Blooming Period: | |
| Elevation: | 20-2000 (65-6560) |
| General Habitats: | North Coast coniferous forest, Riparian woodland |
| Microhabitat: | |
| Microhabitat Details: | Usually growing on Alnus |
Conservation Status
| CA Rare Plant Rank: | 2B.3 |
| Global Rank: | G4 |
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State Rank: |
S2? |
| State List: | None |
| Fed List: | None |
| Other Status: | |
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CRPR Changes: |
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Occurrence Data from the CNDDB
| Total Occurrences: | 4 |
| Element Occurrence Ranks: | |
| Excellent (A) | 0 |
| Good (B) | 0 |
| Fair (C) | 0 |
| Poor (D) | 0 |
| None (X) | 0 |
| Unknown (U) | 4 |
| California Endemic: False | |
| California Counties and Islands: Name (Code) | |
| Del Norte (DNT), Humboldt (HUM) | |
| Quads: Name (Quad Code) | |
| Blue Creek Mtn. (4112347), Fern Canyon (4112441), Iaqua Buttes (4012368), Lonesome Ridge (4112346), Owl Creek (4012358), Requa (4112451) | |
Threat List Data from the CNDDB
| Threat List Total: | 1 | |
| EOs with Threat Listed: | Total EOs | % of EOs |
| 1 | 25 % | |
| Other | 1 | 25% |
Selected References
| Proposed Addition to California Rare Plant Rank 2B.3, G4 / S1 (2022) |
| Methododus qua Omnes Detectos Lichenes (1803) |
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Contributions from the United States National Herbarium 34: 449–558 |
| USFS Potential Species of Conservation Concern Profile |
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 October 2025].