Taxon Report
Lupinus peirsonii MasonPeirson's lupine |
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Taxon Summary
Lupinus peirsonii, commonly known as Peirson's lupine, is a perennial herb in the Fabaceae that is found only in California. It occurs within Joshua tree "woodland", Lower montane coniferous forest, Pinyon and juniper woodland, and Upper montane coniferous forest, growing at elevations from 1000 to 2500 meters. Lupinus peirsonii is ranked 1B.3, Plants Rare, Threatened or Endangered in California and Elsewhere; Not very threatened in California.Classification
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Scientific Name: |
Lupinus peirsonii Mason |
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Common Name: |
Peirson's lupine |
| Family: | Fabaceae |
| Element Code: | PDFAB2B330 |
| USDA Plants Symbol: | LUPE2 |
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Synonyms/Other Names: |
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Ecology and Life History
| Lifeform: | perennial herb |
| Blooming Period: Apr-Jun | Apr-Jun |
| Elevation: | 1000-2500 (3280-8205) |
| General Habitats: | Joshua tree "woodland", Lower montane coniferous forest, Pinyon and juniper woodland, Upper montane coniferous forest |
| Microhabitat: | Gravelly, Rocky |
| Microhabitat Details: |
Conservation Status
| CA Rare Plant Rank: | 1B.3 |
| Global Rank: | G3 |
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State Rank: |
S3 |
| State List: | None |
| Fed List: | None |
| Other Status: | IUCN_NT; SB_CalBG/RSABG; USFS_S |
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CRPR Changes: |
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Occurrence Data from the CNDDB
| Total Occurrences: | 12 |
| Element Occurrence Ranks: | |
| Excellent (A) | 1 |
| Good (B) | 2 |
| Fair (C) | 2 |
| Poor (D) | 0 |
| None (X) | 0 |
| Unknown (U) | 7 |
| California Endemic: True | |
| California Counties and Islands: Name (Code) | |
| Los Angeles (LAX) | |
| Quads: Name (Quad Code) | |
| Crystal Lake (3411737), Juniper Hills (3411748), Mount San Antonio (3411736), Valyermo (3411747), Waterman Mtn. (3411738) | |
Threat List Data from the CNDDB
| Threat List Total: | 5 | |
| EOs with Threat Listed: | Total EOs | % of EOs |
| 5 | 42 % | |
| Erosion/runoff | 2 | 16% |
| Road/trail construction/maint. | 2 | 16% |
| Vandalism/dumping/litter | 1 | 8% |
| Foot traffic/trampling | 1 | 8% |
| Over-collecting/poaching | 1 | 8% |
Citation
California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 31 March 2025].