Eriogonum umbellatum var. ahartii
Common Name: Ahart's buckwheat
Family: Polygonaceae
Element Code: PDPGN086UY
Full Name: Eriogonum umbellatum Torr. var. ahartii Reveal

2011 Dean Wm. Taylor, Ph.D.
Biology Glossary
Rarity Status Glossary
Occurrence Data from DFG
California Natural Diversity Database Glossary
  • Total # of Known Element Occurrences: 28
  • Element Occurrence Ranks:
    A B C D X U
    0 4 1 0 0 23
  • Population Status:
    >20 yrs
    <=20 yrs
    4 24
  • Presence:
    Present Extant Possibly Extirpated Extirpated
    28 0 0
Notes Glossary
  • Threatened by road and trail construction and maintenance, vehicles, and fire suppression. Potentially threatened by logging. Not in The Jepson Manual (1993). See Phytologia 86:146 (2004) for original description.
  • To submit rare plant observation data, use the CNDDB field survey form. Please see also the CNPS Rare Plant Data page.
  • Date Added: 2010-11-29
  • Last Update: 2014-07-30
Location Glossary
  • Elevation: 400 - 2000 meters
  • California Endemic: yes
  • States: California
  • California Counties and Islands:   name (code)
    Butte (BUT),  Plumas (PLU),  Yuba (YUB)
  • Quads:   name (DWR code) USGS code
    Challenge (558B) 39121D2,  American House (574A) 39121F1,  Cascade (574B) 39121F2,  Clipper Mills (574C) 39121E2,  Berry Creek (575B) 39121F4,  Cherokee (576A) 39121F5,  Haskins Valley (590C) 39121G2,  Dogwood Peak (590D) 39121G1,  Pulga (591C) 39121G4,  Soapstone Hill (591D) 39121G3,  Paradise East (592D) 39121G5,  Caribou (606C) 40121A2,  Belden (607D) 40121A3
  • 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.
Presumed Extant Presumed Extirpated or Unknown 3432
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 ].

39121D2=Challenge (558B) 39121D2;39121F1=American House (574A) 39121F1;39121F2=Cascade (574B) 39121F2;39121E2=Clipper Mills (574C) 39121E2;39121F4=Berry Creek (575B) 39121F4;39121F5=Cherokee (576A) 39121F5;39121G2=Haskins Valley (590C) 39121G2;39121G1=Dogwood Peak (590D) 39121G1;39121G4=Pulga (591C) 39121G4;39121G3=Soapstone Hill (591D) 39121G3;39121G5=Paradise East (592D) 39121G5;40121A2=Caribou (606C) 40121A2;40121A3=Belden (607D) 40121A3