Taxon Report
Erythranthe percaulis NesomSerpentine Canyon monkeyflower |
 © 2019 Belinda Lo |
Taxon Summary
Erythranthe percaulis, commonly known as Serpentine Canyon monkeyflower, is a annual herb in the Phrymaceae that is found only in California. It occurs within Chaparral, and Lower montane coniferous forest (openings), growing at elevations from 780 to 855 meters. Erythranthe percaulis is ranked 1B.1, Plants Rare, Threatened or Endangered in California and Elsewhere; Seriously threatened in California.Classification
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Scientific Name: |
Erythranthe percaulis Nesom |
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Common Name: |
Serpentine Canyon monkeyflower |
| Family: | Phrymaceae |
| Element Code: | PDPHR01140 |
| USDA Plants Symbol: | |
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Synonyms/Other Names: |
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Ecology and Life History
| Lifeform: | annual herb |
| Blooming Period: (Mar)May(Jun) | (Mar)May(Jun) |
| Elevation: | 780-855 (2560-2805) |
| General Habitats: | Chaparral, Lower montane coniferous forest |
| Microhabitat: | Roadsides, Rocky, Seeps, Serpentine, Slopes |
| Microhabitat Details: | cliffs |
Conservation Status
| CA Rare Plant Rank: | 1B.1 |
| Global Rank: | G1 |
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State Rank: |
S1 |
| State List: | None |
| Fed List: | None |
| Other Status: | SB_UCSC |
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CRPR Changes: |
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Occurrence Data from the CNDDB
| Total Occurrences: | 1 |
| Element Occurrence Ranks: | |
| Excellent (A) | 0 |
| Good (B) | 0 |
| Fair (C) | 0 |
| Poor (D) | 0 |
| None (X) | 0 |
| Unknown (U) | 1 |
| California Endemic: True | |
| California Counties and Islands: Name (Code) | |
| Plumas (PLU) | |
| Quads: Name (Quad Code) | |
| Caribou (4012112) | |
Threat List Data from the CNDDB
| Threat List Total: | 1 | |
| EOs with Threat Listed: | Total EOs | % of EOs |
| 1 | 100 % | |
| Road/trail construction/maint. | 1 | 100% |
Selected References
| CRPR List Addition on 2017-04-25 |
Citation
California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 7 November 2025].