Species Details

Allium marvinii

Yucaipa onion

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Photo of Allium marvinii
© 2013 Keir Morse
Photo of Allium marvinii
© 2006 Chris Wagner, SBNF
Photo of Allium marvinii
© 2013 Keir Morse
Scientific Name:
Allium marvinii A. Davids.
Common Name:
Yucaipa onion
Family: Alliaceae
Element Code: PMLIL02330
USDA Plants Symbol:
Synonyms/Other Names:
CA Rare Plant Rank: 1B.2
Fed List: None
State List: None
Global Rank: G1
State Rank:
Other Status: BLM_S; USFS_S
CRPR Changes:
changed from 1B.1 to 1B.2 on 2015-07-06
Add Date: 2001-01-01
Date Edited: 2022-02-01
Lifeform: perennial bulbiferous herb
Blooming Period: Apr-May
760 - 1065 meters
2495 - 3495 feet
General Habitat:
  • Chaparral (clay, openings)
General Micro Habitat:
Micro Habitat:
Known only from the Yucaipa and Beaumont area of the southern San Bernardino Mtns. Threatened by non-native plants, urbanization and alteration of fire regimes. Not in TJM (1993). See Bulletin of the Southern California Academy of Sciences 20:49 (1921) for original description.
Total Occurrences: 47
Element Occurrence Ranks:
0 3 1 0 1 42
Occurrence Status:
Historical >20 Years 13
Recent <=20 Years 34
Presumed Extant 46
Possibly Extirpated 0
Presumed Extirpated 1
California Endemic:
California Island:
States: Name (Code)
California (CA)
California Counties and Islands: Name (Code)
Orange (ORA), Riverside (RIV), San Bernardino (SBD), San Diego (SDG)
Quads: Name (Quad Code)
Alberhill (3311764), Barrett Lake (3211666), Beaumont (3311688), Beauty Mountain (3311646), Black Star Canyon (3311776), Blackburn Canyon (3311667), Bonsall (3311732), Cameron Corners (3211664), Canada Gobernadora (3311755), Cuyamaca Peak (3211685), Descanso (3211675), El Cajon Mtn. (3211687), El Casco (3311781), Forest Falls (3411618), Hot Springs Mtn. (3311635), Idyllwild (3311666), Lake Mathews (3311774), Mesa Grande (3311627), Morena Reservoir (3211665), Mount Laguna (3211674), Pechanga (3311741), Rodriquez Mtn. (3311628), Sage (3311658), San Jacinto (3311678), Santa Ysabel (3311616), Sitton Peak (3311754), Viejas Mountain (3211676), Warner Springs (3311636), Wildomar (3311753)
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.


Presumed Extant
Counties   Quads