Taxon Report
Prosartes parvifolia S. WatsonSiskiyou bells |
 ©2010 Kjirsten Wayman |
Taxon Summary
Prosartes parvifolia, commonly known as Siskiyou bells, is a perennial bulbiferous herb in the Liliaceae that is found in California and elsewhere. It occurs within Lower montane coniferous forest, and Upper montane coniferous forest, growing at elevations from 700 to 1525 meters. Prosartes parvifolia is ranked 1B.2, Plants Rare, Threatened or Endangered in California and Elsewhere; Moderately threatened in California.Classification
|
Scientific Name: |
Prosartes parvifolia S. Watson |
|
Common Name: |
Siskiyou bells |
| Family: | Liliaceae |
| Element Code: | PMLIL0R014 |
| USDA Plants Symbol: | |
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Synonyms/Other Names: |
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Ecology and Life History
| Lifeform: | perennial bulbiferous herb |
| Blooming Period: May-Sep | May-Sep |
| Elevation: | 700-1525 (2295-5005) |
| General Habitats: | Lower montane coniferous forest, Upper montane coniferous forest |
| Microhabitat: | Burned areas, Disturbed areas, Roadsides (often) |
| Microhabitat Details: |
Conservation Status
| CA Rare Plant Rank: | 1B.2 |
| Global Rank: | G2 |
|
State Rank: |
S2 |
| State List: | None |
| 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: | 14 |
| Element Occurrence Ranks: | |
| Excellent (A) | 0 |
| Good (B) | 6 |
| Fair (C) | 3 |
| Poor (D) | 1 |
| None (X) | 0 |
| Unknown (U) | 4 |
| California Endemic: False | |
| California Counties and Islands: Name (Code) | |
| Del Norte (DNT) | |
| Quads: Name (Quad Code) | |
| Broken Rib Mtn. (4112386), Cant Hook Mtn. (4112368), Devils Punchbowl (4112376), Gasquet (4112378), Hurdygurdy Butte (4112377), Lonesome Ridge (4112346), Shelly Creek Ridge (4112387) | |
Threat List Data from the CNDDB
| Threat List Total: | 6 | |
| EOs with Threat Listed: | Total EOs | % of EOs |
| 9 | 64 % | |
| Road/trail construction/maint. | 5 | 35% |
| Other | 4 | 28% |
| Logging | 3 | 21% |
| Foot traffic/trampling | 2 | 14% |
| Erosion/runoff | 1 | 7% |
| Wood cutting or brush clearing | 1 | 7% |
Notes
| Known in CA only from in and around the Smith River watershed in the Siskiyou Mtns. |
|
Threats: |
| Possibly threatened by trampling, logging and associated road usage, and road maintenance. |
|
Taxonomy: |
| Similar to P. hookeri and P. smithii; treated as a minor variant of the former in The Jepson Manual (1993). |
Selected References
| Proposed New Add to Rank 1B.2, G2 / S2 |
| Botany of California 2:179 (1880) |
| Bulletin of the Torrey Botanical Club 15:188 (1888) |
| Taxon 43(3):353-366 (1994) |
| Madroño 57(2):129-135 (2010) |
| Prosartes parvifolia profile for potential Species of Conservation Concern evaluation (2018) |
| Prosartes parvifolia 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 19 November 2025].