Allium sanbornii var. congdonii
Common Name: Congdon's onion
Family: Alliaceae
Element Code: PMLIL02211
Full Name: Allium sanbornii A.W. Wood var. congdonii Jeps.

2012 Lynn Robertson
Biology Glossary
Rarity Status Glossary
Occurrence Data from CDFW
California Natural Diversity Database Glossary
  • Total # of Known Element Occurrences:
  • Element Occurrence Ranks:
    A B C D X U
  • Population Status:
    >20 yrs
    <=20 yrs
  • Presence:
    Present Extant Possibly Extirpated Presumed Extirpated
Notes Glossary
  • Possibly threatened by non-native plants. See Flora of California 1(6):275 (1922) by W.L. Jepson for original description, and MadroƱo 36(2):122-130 (1989) for taxonomic treatment.
  • To submit rare plant observation data, use the CNDDB field survey form. Please see also the CNPS Rare Plant Data page.
  • Date Added: 1994-01-01
  • Last Update: 2017-01-26
Location Glossary
  • Elevation: 300 - 1395 meters
  • California Endemic: yes
  • Other States:
  • California Counties and Islands:   name (code)
    El Dorado (ELD),  Mariposa (MPA),  Nevada (NEV),  Placer (PLA),  Tuolumne (TUO)
  • Quads:   name (DWR code) USGS code
    Coulterville (439B) 3712062,  Bear Valley (439D) 3712051,  Groveland (457C) 3712072,  Sonora (458B) 3712084,  Moccasin (458D) 3712073,  Georgetown (526A) 3812087,  Garden Valley (526D) 3812077,  Dutch Flat (541A) 3912027,  Colfax (541C) 3912018,  Foresthill (541D) 3912017,  Washington (557D) 3912037
  • Notes:
      Definitions of codes preceding a county and/or quad:
      * Presumed extirpated
      ? Uncertain about distribution or identity
      ?* Uncertain about distribution, but presumed extirpated if once present
      (?) Occurrence confirmed, but possibly extirpated
      Species may be present in other areas where conditions are favorable. This data should NOT be substituted for pre-project review or for on-site surveys.
Includes unprocessed quads for CRPR 3 and 4 plants; unprocessed location data has not been quality controlled and may contain errors.
Presumed Extant Presumed Extirpated or Unknown 1558
Links to Leading Resources of Taxon Information
Suggested Citation
California Native Plant Society, Rare Plant Program. . Inventory of Rare and Endangered Plants of California (online edition, v8-03). Website [accessed ].

3712062=Coulterville (439B) 3712062;3712051=Bear Valley (439D) 3712051;3712072=Groveland (457C) 3712072;3712084=Sonora (458B) 3712084;3712073=Moccasin (458D) 3712073;3812087=Georgetown (526A) 3812087;3812077=Garden Valley (526D) 3812077;3912027=Dutch Flat (541A) 3912027;3912018=Colfax (541C) 3912018;3912017=Foresthill (541D) 3912017;3912037=Washington (557D) 3912037