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 DFG
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 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 Madroño 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: 2011-02-08
Location Glossary
  • Elevation: 300 - 990 meters
  • California Endemic: yes
  • States: California
  • 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) 37120F2,  Bear Valley (439D) 37120E1,  Groveland (457C) 37120G2,  Sonora (458B) 37120H4,  Moccasin (458D) 37120G3,  Georgetown (526A) 38120H7,  Garden Valley (526D) 38120G7,  Dutch Flat (541A) 39120B7,  Colfax (541C) 39120A8,  Foresthill (541D) 39120A7,  Washington (557D) 39120C7
  • 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.
Quad data is not available for all List 3 and 4 plants. For those that do contain this data, it has not been quality controlled and is potentially incomplete, inaccurate, and/or out of date. Please use caution when referencing this information. We are currently working hard to maintain this data and hope to provide accurate and up to date information in the near future.
Presumed Extant Presumed Extirpated or Unknown 1558
Links to Leading Resources of Taxon Information
Suggested Citation
CNPS, Rare Plant Program. . Inventory of Rare and Endangered Plants (online edition, v8-02). California Native Plant Society, Sacramento, CA. Website [accessed ].

37120F2=Coulterville (439B) 37120F2;37120E1=Bear Valley (439D) 37120E1;37120G2=Groveland (457C) 37120G2;37120H4=Sonora (458B) 37120H4;37120G3=Moccasin (458D) 37120G3;38120H7=Georgetown (526A) 38120H7;38120G7=Garden Valley (526D) 38120G7;39120B7=Dutch Flat (541A) 39120B7;39120A8=Colfax (541C) 39120A8;39120A7=Foresthill (541D) 39120A7;39120C7=Washington (557D) 39120C7