Astragalus hornii var. hornii
Common Name: Horn's milk-vetch
Family: Fabaceae
Element Code: PDFAB0F421
Full Name: Astragalus hornii A. Gray var. hornii

2013 Neal Kramer
Biology Glossary
Rarity Status Glossary
  • Rare Plant Rank: 1B.1
    Rare, threatened, or endangered in California and elsewhere
    .1: Seriously endangered in California
  • Federal Listing Status:
    Not Listed
  • State Listing Status:
    Not Listed
  • State Rank: S1
    S1: Critically Imperiled.
  • Global Rank: G4G5T1T2
    T1: Critically Imperiled. T2: Imperiled. G4: (species) Apparently secure, considering populations outside California. G5: (species) Secure, considering populations outside California.
Occurrence Data from DFG
California Natural Diversity Database Glossary
  • Total # of Known Element Occurrences: 14
  • Element Occurrence Ranks:
    A B C D X U
    0 0 0 0 1 13
  • Population Status:
    >20 yrs
    <=20 yrs
    12 2
  • Presence:
    Present Extant Possibly Extirpated Extirpated
    13 0 1
Notes Glossary
  • Subject to eradication efforts in early 1900's because it was poisonous to sheep. Threatened by habitat alteration. See Proceedings of the California Academy of Arts 7: 398 (1868) 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: 2006-12-01
  • Last Update: 2011-10-18
Location Glossary
  • Elevation: 60 - 850 meters
  • California Endemic: no
  • States: California, Nevada
  • California Counties and Islands:   name (code)
    Inyo (INY),  Kern (KRN),  San Bernardino (SBD) *,  Tulare (TUL) ?
  • Quads:   name (DWR code) USGS code
    San Bernardino South (107D) 34117A3,  Willow Springs (187A) 34118H3,  Grapevine (189B) 34118H8,  Frazier Mtn. (189C) 34118G8,  Arvin (214A) 35118B7,  Conner (215A) 35119B1,  Taft (216B) 35119B4,  Fellows (217A) 35119B5,  Lamont (239C) 35118C8,  Stevens (240C) 35119C2,  Gosford (240D) 35119C1,  Tupman (241D) 35119C3,  Reward (242C) 35119C6,  Lost Hills NW (265B) 35119F6,  Semitropic (265D) 35119E5,  Union Wash (351A) 36118F1
  • 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 3194
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 ].

34117A3=San Bernardino South (107D) 34117A3;34118H3=Willow Springs (187A) 34118H3;34118H8=Grapevine (189B) 34118H8;34118G8=Frazier Mtn. (189C) 34118G8;35118B7=Arvin (214A) 35118B7;35119B1=Conner (215A) 35119B1;35119B4=Taft (216B) 35119B4;35119B5=Fellows (217A) 35119B5;35118C8=Lamont (239C) 35118C8;35119C2=Stevens (240C) 35119C2;35119C1=Gosford (240D) 35119C1;35119C3=Tupman (241D) 35119C3;35119C6=Reward (242C) 35119C6;35119F6=Lost Hills NW (265B) 35119F6;35119E5=Semitropic (265D) 35119E5;36118F1=Union Wash (351A) 36118F1