Species Details

Allium yosemitense

Yosemite onion

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Photo by © 2012 Lynn Robertson  max-height:128px; max-width:145px;
© 2012 Lynn Robertson
Photo by © 2010 Barry Breckling  max-height:128px; max-width:145px;
© 2010 Barry Breckling
Photo by © 2008 Dean Wm. Taylor, Ph.D.  max-height:128px; max-width:145px;
© 2008 Dean Wm. Taylor, Ph.D.
Scientific Name:
Allium yosemitense Eastw.
Common Name:
Yosemite onion
Family: Alliaceae
Element Code: PMLIL022L0
USDA Plants Symbol: ALYO
Synonyms/Other Names:
Lifeform: perennial bulbiferous herb
Blooming Period: Apr-Jul
Elevation:
535 - 2200 meters
1755 - 7220 feet
General Habitat:
  • Broadleafed upland forest
  • Chaparral
  • Cismontane woodland
  • Lower montane coniferous forest
General Micro Habitat:
Micro Habitat:
  • Granitic (sometimes)
  • Metamorphic (sometimes)
  • Rocky
Notes:
Known from fewer than twenty occurrences. Possibly threatened by recreational activities. See Leaflets of Western Botany 1:132-133 (1934) for original description, Fremontia 8(1):15-18 (1980) for information on rediscovery, and Aliso 11(1):27-35 (1985) for taxonomic treatment.
Threats:
Taxonomy:
Other:
Total Occurrences: 14
Element Occurrence Ranks:
A B C D X U
4 1 0 1 0 8
Occurrence Status:
Historical >20 Years 10
Recent <=20 Years 4
Presence:
Presumed Extant 14
Possibly Extirpated 0
Presumed Extirpated 0
California Endemic:
California Island:
States: Name (Code)
California (CA)
California Counties and Islands: Name (Code)
Mariposa (MPA), Tuolumne (TUO)
Quads: Name (Quad Code)
Ascension Mtn. (3711978), Buckingham Mtn. (3711957), El Capitan (3711966), El Portal (3711967), Wawona (3711956)
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.

Map

Presumed Extant
Counties   Quads