CNPS

CNPS Rare Plant Inventory



Taxon Details

Allium fimbriatum var. purdyi

Purdy's onion

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Photo of Allium fimbriatum var. purdyi
© 2014 Steve Matson 		Photo of Allium fimbriatum var. purdyi
© 2016 Aaron Arthur 		Photo of Allium fimbriatum var. purdyi
© 2011 Vernon Smith

Taxon Summary:

Allium fimbriatum var. purdyi, commonly known as Purdy's onion, is a perennial bulbiferous herb in the Alliaceae that is found only in California. It occurs within Chaparral, and Cismontane woodland, growing at elevations from 300 to 600 meters. Allium fimbriatum var. purdyi is ranked 4.3, Plants of Limited Distribution, A Watch List; Not very threatened in California.

  Classification

Scientific Name:
Allium fimbriatum Wats. var. purdyi (Eastw.) Ownbey & Aase
Common Name:
Purdy's onion
Family: Alliaceae
Element Code: PMLIL020Y7
USDA Plants Symbol: ALFIP2
Synonyms/Other Names:
Name Status: JEF, FNA, POWO,
IPNI, Tropicos

  Conservation Status

CA Rare Plant Rank: 4.3
Fed List: None
State List: None
Global Rank: G4G5T3
State Rank:
 S3
Other Status: SB_UCSC
CRPR Changes:
Add Date: 1980-01-01
Date Edited: 2023-05-02

  Ecology and Life History

Lifeform: perennial bulbiferous herb
Blooming Period: Apr-Jun
JFMAMJJASOND
Elevation:
300 - 600 meters
985 - 1970 feet
General Habitats:
  • Chaparral
  • Cismontane woodland
Microhabitat Details:
Microhabitat:
  • Clay
  • Serpentine

  Notes

Notes:
Threats:
Taxonomy:

  Threat List Data from the CNDDB

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

  Occurrence Data from the CNDDB

Total Occurrences: 0
Element Occurrence Ranks:
A B C D X U
0 0 0 0 0 0
Occurrence Status:
Historical >20 Years 0
Recent <=20 Years 0
Presence:
Presumed Extant 0
Possibly Extirpated 0
Presumed Extirpated 0

  Location

California Endemic:
California Island:
States: Name (Code)
California (CA)
California Counties and Islands: Name (Code)
Colusa (COL), Lake (LAK), Napa (NAP), Yolo (YOL)*
Quads: Name (Quad Code)
Gilmore Peak (3912235), Glascock Mtn. (3812283), Jericho Valley (3812274), Knoxville (3812273), Salt Canyon (3912213), Wilbur Springs (3912214)
Notes:
Definitions of codes following a county and/or quad:
* Presumed extirpated
(?) Occurrence confirmed, but possibly extirpated
Quad and county data is imported from the CNDDB. Species may be present in other areas where conditions are favorable. These data should NOT be substituted for pre-project review or for on-site surveys.
Regional Map

  Map

Presumed Extant
Click on quad for name. Hold Shift Key to use mouse scroll wheel

  Selected References

Original Description: Leaflets of Western Botany 2:110 (1938)
Revised Nomenclature: Aliso 13:423 (1992)
Species Account: Allium fimbriatum var. purdyi profile for potential Species of Conservation Concern evaluation (2018)

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Suggested Citation:
California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 30 July 2025].
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