BC Conservation Data Centre: Species Summary
Lewisiopsis tweedyi
Tweedy's lewisia
| Scientific Name: | Lewisiopsis tweedyi (A. Gray) Govaerts | ||||||||||
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| Scientific Name Synonyms: |
Cistanthe tweedyi
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| English Name: | Tweedy's lewisia | ||||||||||
| English Name Synonyms: |
Tweedy's bitterroot
Tweedy's pussypaws |
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| Classification / Taxonomy | |||||||||||
| Scientific Name - Concept Reference: | Kartesz, J.T. 1994. A synonymized checklist of the vascular flora of the United States, Canada, and Greenland. 2nd edition. 2 vols. Timber Press, Portland, OR. | ||||||||||
| Classification Level: | Species | ||||||||||
| Species Group: | Vascular Plant | ||||||||||
| Species Code: | LEWITWD | ||||||||||
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| Conservation Status / Legal Designation | |||||||||||
| Global Status: | G3 (Jun 2004) | ||||||||||
| Provincial Status: | S2 (Apr 2019) | ||||||||||
| BC List: | Red | ||||||||||
| Provincial FRPA list: | |||||||||||
| Provincial Wildlife Act: | |||||||||||
| COSEWIC Status: | Endangered (Nov 2013) | ||||||||||
| SARA Schedule: | 1 - Endangered (Feb 2018) | ||||||||||
| General Status Canada: | 2 - May be at risk (2010) | ||||||||||
| Ecology & Life History | |||||||||||
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| Habitats: (Type / Subtype / Dependence) |
Rock/Sparsely Vegetated Rock / Cliff / Facultative - frequent use
Rock/Sparsely Vegetated Rock / Rock/Sparsely Vegetated Rock / Facultative - frequent use Rock/Sparsely Vegetated Rock / Talus / Facultative - frequent use |
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| Global Habitat Comments: | Rock crevices, ledges, and talus slopes, mostly in areas dominated by ponderosa pine (Pinus ponderosa). Occurs mainly on basalt or granite derived soils; occasionally on serpentine. | ||||||||||
| Provincial Phenology: (1st half of month/ 2nd half of month) |
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| Elevation (m) (min / max): | Provincial: | ||||||||||
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| Distribution | |||||||||||
| Endemic: | N | ||||||||||
| Disjunct, more common elsewhere: | |||||||||||
| Peripheral, major distribution elsewhere: | |||||||||||
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| Last Literature Search: | |||||||||||
| References and Related Literature | |||||||||||
Douglas, G.W., D. Meidinger, and J. Penny. 2002. Rare Native Vascular Plants of British Columbia, 2nd ed. B.C. Conserv. Data Centre, Terrestrial Inf. Branch, Victoria. 358pp. |
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Douglas, G.W., D. Meidinger, and J. Pojar, eds. 1999. Illustrated Flora of British Columbia, Vol. 4, Dicotyledons (Orobanchaceae through Rubiaceae). B.C. Minist. Environ., Lands and Parks, and B.C. Minist. For., Victoria. 427pp. |
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Hitchcock, C.L., and A. Cronquist. 1973. Flora of the Pacific Northwest: An Illustrated Manual. University of Washington Press, Seattle, Washington. 730 pp. |
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Washington Natural Heritage Program. 1981. An illustrated guide to the endangered, threatened and sensitive vascular plants of Washington. Washington Natural Heritage Program, Olympia. 328 pp. |
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Please visit the website Conservation Status Ranks for definitions of the data fields used in this summary report.
Suggested Citation:
B.C. Conservation Data Centre. Species Summary: Lewisiopsis tweedyi. B.C. Minist. of Environment. Available: https://a100.gov.bc.ca/pub/eswp/ (accessed Apr 6, 2026).