Taxon Report
Smithiastrum wilkinsianum (Greene) MorinWilkin's harebell |
 ©2010 Eric White |
Taxon Summary
Smithiastrum wilkinsianum, commonly known as Wilkin's harebell, is a perennial rhizomatous herb in the Campanulaceae that is found only in California. It occurs within Meadows and seeps, Subalpine coniferous forest, and Upper montane coniferous forest, growing at elevations from 1270 to 2600 meters. Smithiastrum wilkinsianum is ranked 1B.2, Plants Rare, Threatened or Endangered in California and Elsewhere; Moderately threatened in California.Classification
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Scientific Name: |
Smithiastrum wilkinsianum (Greene) Morin |
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Common Name: |
Wilkin's harebell |
| Family: | Campanulaceae |
| Element Code: | PDCAM020Z0 |
| USDA Plants Symbol: | CAWI8 |
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Synonyms/Other Names: |
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Ecology and Life History
| Lifeform: | perennial rhizomatous herb |
| Blooming Period: Jul-Sep | Jul-Sep |
| Elevation: | 1270-2600 (4165-8530) |
| General Habitats: | Meadows and seeps, Subalpine coniferous forest, Upper montane coniferous forest |
| Microhabitat: | |
| Microhabitat Details: |
Conservation Status
| CA Rare Plant Rank: | 1B.2 |
| Global Rank: | G2 |
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State Rank: |
S2 |
| State List: | None |
| Fed List: | None |
| Other Status: | SB_CalBG/RSABG; USFS_S |
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CRPR Changes: |
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Occurrence Data from the CNDDB
| Total Occurrences: | 24 |
| Element Occurrence Ranks: | |
| Excellent (A) | 1 |
| Good (B) | 7 |
| Fair (C) | 4 |
| Poor (D) | 0 |
| None (X) | 0 |
| Unknown (U) | 12 |
| California Endemic: True | |
| California Counties and Islands: Name (Code) | |
| Siskiyou (SIS), Trinity (TRI) | |
| Quads: Name (Quad Code) | |
| Ash Creek Butte (4112241), Boulder Peak (4112351), Caribou Lake (4112218), Covington Mill (4012287), Elk Spring (4112231), McCloud (4112232), Mt. Hilton (4012381), Mt. Shasta (4112242), Siligo Peak (4012288), Thompson Peak (4112311) | |
Threat List Data from the CNDDB
| Threat List Total: | 10 | |
| EOs with Threat Listed: | Total EOs | % of EOs |
| 12 | 50 % | |
| Foot traffic/trampling | 6 | 25% |
| Recreational use (non-ORV) | 6 | 25% |
| Logging | 5 | 20% |
| Surface water diversion | 4 | 16% |
| Road/trail construction/maint. | 3 | 12% |
| Altered flood/tidal/hydrologic regime | 2 | 8% |
| Development | 1 | 4% |
| Erosion/runoff | 1 | 4% |
| Grazing | 1 | 4% |
| Non-native plant impacts | 1 | 4% |
Selected References
| Non-Substantive Name Changes: Multiple taxa in Campanulaceae (2022-12-19) |
| Phytoneuron 2020-49: 1–46 (2020) |
| Campanula wilkinsiana 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 13 November 2025].