Taxon Report
Bensoniella oregona (Abrams & Bacig.) Mortonbensoniella |
 © 2021 Scot Loring |
Taxon Summary
Bensoniella oregona, commonly known as bensoniella, is a perennial herb in the Saxifragaceae that is found in California and elsewhere. It occurs within Bogs and fens, Lower montane coniferous forest (openings), and Meadows and seeps, growing at elevations from 900 to 1400 meters. Bensoniella oregona is ranked 1B.1, Plants Rare, Threatened or Endangered in California and Elsewhere; Seriously threatened in California.Classification
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Scientific Name: |
Bensoniella oregona (Abrams & Bacig.) Morton |
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Common Name: |
bensoniella |
| Family: | Saxifragaceae |
| Element Code: | PDSAX02010 |
| USDA Plants Symbol: | BEOR |
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Synonyms/Other Names: |
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Ecology and Life History
| Lifeform: | perennial herb |
| Blooming Period: May-Jul | May-Jul |
| Elevation: | 900-1400 (2955-4595) |
| General Habitats: | Bogs and fens, Lower montane coniferous forest, Meadows and seeps |
| Microhabitat: | Mesic |
| Microhabitat Details: |
Conservation Status
| CA Rare Plant Rank: | 1B.1 |
| Global Rank: | G3 |
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State Rank: |
S2 |
| State List: | CR |
| Fed List: | None |
| Other Status: | SB_UCSC; USFS_S |
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CRPR Changes: |
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Occurrence Data from the CNDDB
| Total Occurrences: | 12 |
| Element Occurrence Ranks: | |
| Excellent (A) | 0 |
| Good (B) | 5 |
| Fair (C) | 3 |
| Poor (D) | 1 |
| None (X) | 0 |
| Unknown (U) | 3 |
| California Endemic: False | |
| California Counties and Islands: Name (Code) | |
| Humboldt (HUM) | |
| Quads: Name (Quad Code) | |
| Board Camp Mtn. (4012366), Denny (4012384), Mad River Buttes (4012367), Maple Creek (4012377), Salyer (4012385) | |
Threat List Data from the CNDDB
| Threat List Total: | 10 | |
| EOs with Threat Listed: | Total EOs | % of EOs |
| 10 | 83 % | |
| Logging | 9 | 75% |
| Other | 4 | 33% |
| Road/trail construction/maint. | 4 | 33% |
| Foot traffic/trampling | 3 | 25% |
| Grazing | 2 | 16% |
| Altered flood/tidal/hydrologic regime | 2 | 16% |
| Non-native plant impacts | 2 | 16% |
| ORV activity | 1 | 8% |
| Vandalism/dumping/litter | 1 | 8% |
| Erosion/runoff | 1 | 8% |
Selected References
| Contributions from the Dudley Herbarium 1:95 (1929) |
| Leaflets of Western Botany 10:181 (1965) |
| Bensoniella oregona 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 15 November 2025].