Taxon Report
Neviusia cliftonii Shevock, B. Ertter & D.W. TaylorShasta snow-wreath |
 ©2008 Steve Matson |
Taxon Summary
Neviusia cliftonii, commonly known as Shasta snow-wreath, is a perennial deciduous shrub in the Rosaceae that is found only in California. It occurs within Cismontane woodland, Lower montane coniferous forest, and Riparian woodland, growing at elevations from 300 to 590 meters. Neviusia cliftonii is ranked 1B.2, Plants Rare, Threatened or Endangered in California and Elsewhere; Moderately threatened in California.Classification
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Scientific Name: |
Neviusia cliftonii Shevock, B. Ertter & D.W. Taylor |
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Common Name: |
Shasta snow-wreath |
| Family: | Rosaceae |
| Element Code: | PDROS14020 |
| USDA Plants Symbol: | NECL |
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Synonyms/Other Names: |
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Ecology and Life History
| Lifeform: | perennial deciduous shrub |
| Blooming Period: Apr-Jun | Apr-Jun |
| Elevation: | 300-590 (985-1935) |
| General Habitats: | Cismontane woodland, Lower montane coniferous forest, Riparian woodland |
| Microhabitat: | Carbonate (sometimes), Streambanks (often), Volcanic |
| Microhabitat Details: | metavolcanic |
Conservation Status
| CA Rare Plant Rank: | 1B.2 |
| Global Rank: | G2 |
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State Rank: |
S2 |
| State List: | CT |
| Fed List: | None |
| Other Status: | BLM_S; SB_CalBG/RSABG; USFS_S |
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CRPR Changes: |
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Occurrence Data from the CNDDB
| Total Occurrences: | 26 |
| Element Occurrence Ranks: | |
| Excellent (A) | 3 |
| Good (B) | 20 |
| Fair (C) | 0 |
| Poor (D) | 0 |
| None (X) | 0 |
| Unknown (U) | 3 |
| California Endemic: True | |
| California Counties and Islands: Name (Code) | |
| Shasta (SHA) | |
| Quads: Name (Quad Code) | |
| Bella Vista (4012262), Bollibokka Mtn. (4012282), Devils Rock (4012271), Goose Gap (4012281), Hanland Peak (4012283), Minnesota Mtn. (4012272), Montgomery Creek (4012178), O'Brien (4012273), Project City (4012263) | |
Threat List Data from the CNDDB
| Threat List Total: | 7 | |
| EOs with Threat Listed: | Total EOs | % of EOs |
| 10 | 38 % | |
| Non-native plant impacts | 8 | 30% |
| Logging | 4 | 15% |
| Road/trail construction/maint. | 3 | 11% |
| ORV activity | 1 | 3% |
| Mining | 1 | 3% |
| Altered flood/tidal/hydrologic regime | 1 | 3% |
| Improper burning regime | 1 | 3% |
Notes
| Known only from near Lake Shasta. Potentially threatened by logging, mining, and proposed dam raise project. Possibly threatened by road maintenance and non-native plants. See Novon 2(4):285-289 (1992) for original description, Fremontia 22(3):3-13 (1993) for species account and information about discovery, and Fremontia 33(2):24-26 (2005) for information on habitat and geology. |
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Threats: |
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Taxonomy: |
Selected References
| Neviusia cliftonii account for potential Species of Conservation Concern evaluation (2020) |
Citation
California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 19 November 2025].