Astragalus tener var. ferrisiae
Common Name: Ferris' milk-vetch
Family: Fabaceae
Element Code: PDFAB0F8R3
Full Name: Astragalus tener Gray var. ferrisiae Liston

Biology Glossary
Rarity Status Glossary
Occurrence Data from DFG
California Natural Diversity Database Glossary
  • Total # of Known Element Occurrences: 18
  • Element Occurrence Ranks:
    A B C D X U
    1 0 0 1 5 11
  • Population Status:
    >20 yrs
    <=20 yrs
    16 2
  • Presence:
    Present Extant Possibly Extirpated Extirpated
    13 5 0
Notes Glossary
  • Rediscovered in 1989 by V. Oswald in Butte Sink WA (DFG); known only from six extant occurrences. Most historical habitat destroyed by agriculture. See Brittonia 42(2):100-104 (1990) for original description, and Systematic Botany 17(3):367-379 (1992) for distributional information.
  • 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: 2010-03-15
Location Glossary
  • Elevation: 2 - 75 meters
  • California Endemic: yes
  • States: California
  • California Counties and Islands:   name (code)
    Butte (BUT),  Colusa (COL),  Glenn (GLE),  Solano (SOL) *,  Sutter (SUT),  Yolo (YOL)
  • Quads:   name (DWR code) USGS code
    Saxon (497B) 38121D6,  Liberty Island (497C)* 38121C6,  Dozier (498D)* 38121C7,  Davis (513C) 38121E6,  Sacramento West (513D) 38121E5,  Dunnigan (530B)* 38121H8,  Yuba City (544A)* 39121B5,  Colusa (546A)* 39122B1,  Arbuckle (546D)* 39122A1,  Manor Slough (547A) 39122B3,  Biggs (560B) 39121D6,  West of Biggs (561A) 39121D7,  Butte City (561B) 39121D8,  Pennington (561D) 39121C7,  Logandale (562B) 39122D2,  Llano Seco (577C) 39121E8,  Nord (593C)* 39121G8
  • 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 1128
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 ].

38121D6=Saxon (497B) 38121D6;38121C6=Liberty Island (497C)* 38121C6;38121C7=Dozier (498D)* 38121C7;38121E6=Davis (513C) 38121E6;38121E5=Sacramento West (513D) 38121E5;38121H8=Dunnigan (530B)* 38121H8;39121B5=Yuba City (544A)* 39121B5;39122B1=Colusa (546A)* 39122B1;39122A1=Arbuckle (546D)* 39122A1;39122B3=Manor Slough (547A) 39122B3;39121D6=Biggs (560B) 39121D6;39121D7=West of Biggs (561A) 39121D7;39121D8=Butte City (561B) 39121D8;39121C7=Pennington (561D) 39121C7;39122D2=Logandale (562B) 39122D2;39121E8=Llano Seco (577C) 39121E8;39121G8=Nord (593C)* 39121G8