Taxon Report
Lewisia oppositifolia (Wats.) Rob.opposite-leaved lewisia |
 © 2013 Scot Loring |
Taxon Summary
Lewisia oppositifolia, commonly known as opposite-leaved lewisia, is a perennial herb in the Montiaceae that is found in California and elsewhere. It occurs within Lower montane coniferous forest, growing at elevations from 300 to 1220 meters. Lewisia oppositifolia is ranked 2B.2, Plants Rare, Threatened, or Endangered in California, But More Common Elsewhere; Moderately threatened in California.Classification
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Scientific Name: |
Lewisia oppositifolia (Wats.) Rob. |
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Common Name: |
opposite-leaved lewisia |
| Family: | Montiaceae |
| Element Code: | PDPOR040B0 |
| USDA Plants Symbol: | LEOP |
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Synonyms/Other Names: |
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Ecology and Life History
| Lifeform: | perennial herb |
| Blooming Period: Apr-May(Jun) | Apr-May(Jun) |
| Elevation: | 300-1220 (985-4005) |
| General Habitats: | Lower montane coniferous forest |
| Microhabitat: | |
| Microhabitat Details: |
Conservation Status
| CA Rare Plant Rank: | 2B.2 |
| Global Rank: | G3 |
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State Rank: |
S2 |
| State List: | None |
| Fed List: | None |
| Other Status: | USFS_S |
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CRPR Changes: |
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Occurrence Data from the CNDDB
| Total Occurrences: | 14 |
| Element Occurrence Ranks: | |
| Excellent (A) | 1 |
| Good (B) | 1 |
| Fair (C) | 2 |
| Poor (D) | 0 |
| None (X) | 0 |
| Unknown (U) | 10 |
| California Endemic: False | |
| California Counties and Islands: Name (Code) | |
| Del Norte (DNT) | |
| Quads: Name (Quad Code) | |
| Gasquet (4112378), High Divide (4112481), High Plateau Mtn. (4112388), Hiouchi (4112471), Hurdygurdy Butte (4112377), Shelly Creek Ridge (4112387) | |
Threat List Data from the CNDDB
| Threat List Total: | 5 | |
| EOs with Threat Listed: | Total EOs | % of EOs |
| 8 | 57 % | |
| Road/trail construction/maint. | 4 | 28% |
| ORV activity | 3 | 21% |
| Mining | 2 | 14% |
| Recreational use (non-ORV) | 2 | 14% |
| Other | 1 | 7% |
Selected References
| Proceedings of the American Academy of Arts and Sciences 20:355 (1885) |
| Synoptical Flora of North America 1(1[2]): 268. 1897 |
| Lewisia oppositifolia profile for potential Species of Conservation Concern evaluation (2018) |
Citation
California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 11 November 2025].