Taxon Report
Lupinus elmeri GreeneSouth Fork Mountain lupine |
 ©2017 Belinda Lo |
Taxon Summary
Lupinus elmeri, commonly known as South Fork Mountain lupine, is a perennial herb in the Fabaceae that is found only in California. It occurs within Lower montane coniferous forest, growing at elevations from 1218 to 2000 meters. Lupinus elmeri is ranked 1B.2, Plants Rare, Threatened or Endangered in California and Elsewhere; Moderately threatened in California.Classification
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Scientific Name: |
Lupinus elmeri Greene |
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Common Name: |
South Fork Mountain lupine |
| Family: | Fabaceae |
| Element Code: | PDFAB2B1G0 |
| USDA Plants Symbol: | LUEL2 |
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Synonyms/Other Names: |
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Ecology and Life History
| Lifeform: | perennial herb |
| Blooming Period: Jun-Jul(Aug) | Jun-Jul(Aug) |
| Elevation: | 1218-2000 (3995-6560) |
| General Habitats: | Lower 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 |
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CRPR Changes: |
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Occurrence Data from the CNDDB
| Total Occurrences: | 15 |
| Element Occurrence Ranks: | |
| Excellent (A) | 1 |
| Good (B) | 8 |
| Fair (C) | 1 |
| Poor (D) | 0 |
| None (X) | 0 |
| Unknown (U) | 5 |
| California Endemic: True | |
| California Counties and Islands: Name (Code) | |
| Humboldt (HUM), Trinity (TRI) | |
| Quads: Name (Quad Code) | |
| Blake Mountain (4012355), Forest Glen (4012333), Hyampom (4012354), Sims Mountain (4012365), Sportshaven (4012344) | |
Threat List Data from the CNDDB
| Threat List Total: | 4 | |
| EOs with Threat Listed: | Total EOs | % of EOs |
| 14 | 93 % | |
| Logging | 13 | 86% |
| Road/trail construction/maint. | 7 | 46% |
| Grazing | 1 | 6% |
| Recreational use (non-ORV) | 1 | 6% |
Selected References
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Pittonia 3:159 (1897) |
| Lupinus elmeri profile for potential Species of Conservation Concern evaluation (2022) |
Citation
California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 1 November 2025].