Taxon Report
Silene verecunda Wats. ssp. verecundaSan Francisco campion |
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Taxon Summary
Silene verecunda ssp. verecunda, commonly known as San Francisco campion, is a perennial herb in the Caryophyllaceae that is found only in California. It occurs within Chaparral, Coastal bluff scrub, Coastal prairie, Coastal scrub, and Valley and foothill grassland, growing at elevations from 30 to 645 meters. Silene verecunda ssp. verecunda is ranked 1B.2, Plants Rare, Threatened or Endangered in California and Elsewhere; Moderately threatened in California.Classification
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Scientific Name: |
Silene verecunda Wats. ssp. verecunda |
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Common Name: |
San Francisco campion |
| Family: | Caryophyllaceae |
| Element Code: | PDCAR0U213 |
| USDA Plants Symbol: | SIVEV |
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Synonyms/Other Names: |
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Ecology and Life History
| Lifeform: | perennial herb |
| Blooming Period: (Feb)Mar-Jul(Aug) | (Feb)Mar-Jul(Aug) |
| Elevation: | 30-645 (100-2115) |
| General Habitats: | Chaparral, Coastal bluff scrub, Coastal prairie, Coastal scrub, Valley and foothill grassland |
| Microhabitat: | Sandy |
| Microhabitat Details: |
Conservation Status
| CA Rare Plant Rank: | 1B.2 |
| Global Rank: | G5T1 |
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State Rank: |
S1 |
| State List: | None |
| Fed List: | None |
| Other Status: | SB_CalBG/RSABG; SB_UCSC |
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CRPR Changes: |
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Occurrence Data from the CNDDB
| Total Occurrences: | 20 |
| Element Occurrence Ranks: | |
| Excellent (A) | 0 |
| Good (B) | 1 |
| Fair (C) | 1 |
| Poor (D) | 1 |
| None (X) | 7 |
| Unknown (U) | 10 |
| California Endemic: True | |
| California Counties and Islands: Name (Code) | |
| San Francisco (SFO), San Mateo (SMT), Santa Cruz (SCR) | |
| Quads: Name (Quad Code) | |
| Ano Nuevo (3712213), Montara Mountain (3712254), San Francisco North (3712274), San Francisco South (3712264), Woodside (3712243) | |
Threat List Data from the CNDDB
| Threat List Total: | 7 | |
| EOs with Threat Listed: | Total EOs | % of EOs |
| 13 | 65 % | |
| Non-native plant impacts | 6 | 30% |
| Development | 4 | 20% |
| Foot traffic/trampling | 3 | 15% |
| Grazing | 2 | 10% |
| Other | 2 | 10% |
| Recreational use (non-ORV) | 1 | 5% |
| Erosion/runoff | 1 | 5% |
Notes
| Threatened by development, recreational activities, and non-native plants. Not in TJM 2. See Proceedings of the American Academy of Arts and Sciences 10:344 (1875) for original description, and University of Washington Publications in Biology 13:41-42 (1947) for taxonomic treatment. |
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Threats: |
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Taxonomy: |
Selected References
| CRPR List Deletion on 2009-06-08 |
Citation
California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 28 October 2025].