Taxon Report

Lupinus antoninus Eastw.

Anthony Peak lupine

Print Report


©2018 John Doyen

Taxon Summary

Lupinus antoninus, commonly known as Anthony Peak lupine, is a perennial herb in the Fabaceae that is found only in California. It occurs within Lower montane coniferous forest, and Upper montane coniferous forest, growing at elevations from 1220 to 2285 meters. Lupinus antoninus is ranked 1B.2, Plants Rare, Threatened or Endangered in California and Elsewhere; Moderately threatened in California.

  Classification
Scientific Name:
 Lupinus antoninus Eastw.
Common Name:
 Anthony Peak lupine
Family: Fabaceae
Element Code: PDFAB2B0C0
USDA Plants Symbol: LUAN5
Synonyms/Other Names:

Ecology and Life History
Lifeform: perennial herb
Blooming Period: May-Jul May-Jul
Elevation: 1220-2285 (4005-7495)
General Habitats: Lower montane coniferous forest, Upper montane coniferous forest
Microhabitat: Rocky
Microhabitat Details:

Conservation Status
CA Rare Plant Rank: 1B.2
Global Rank: G2
State Rank:
 S2
State List: None
Fed List: None
Other Status:
CRPR Changes:
  • changed from 1B.3 to 1B.2 on 2017-10-18

Occurrence Data from the CNDDB
Total Occurrences: 6
Element Occurrence Ranks:
   Excellent (A) 0
   Good (B) 3
   Fair (C) 0
   Poor (D) 0
   None (X) 0
   Unknown (U) 3

Location
California Endemic:  True
California Counties and Islands: Name (Code)
Colusa (COL), Glenn (GLE), Lake (LAK), Mendocino (MEN), Tehama (TEH), Trinity (TRI)
Quads: Name (Quad Code)
Bartlett Mtn. (3912227), Fouts Springs (3912236), Hull Mountain (3912258), Lucerne (3912217), Mendocino Pass (3912278), Solomon Peak (4012218), St. John Mtn. (3912246)

Threat List Data from the CNDDB

Threat List Total: 0
EOs with Threat Listed: Total EOs % of EOs
0 %

 

Notes
Threats:
Possibly threatened by apparent hybridization with L. albifrons var. collinus.
Taxonomy:

Selected References

Leaflets of Western Botany 3(9):202 (1943)
Lupinus antoninus profile for potential Species of Conservation Concern evaluation (2017)
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 May 2025].