Layia heterotricha
Common Name: pale-yellow layia
Family: Asteraceae
Element Code: PDAST5N070
Full Name: Layia heterotricha (DC.) H. & A.

2003 Christopher L. Christie
Biology Glossary
  • Lifeform: annual herb
  • Blooming Period: March - June
  • Habitat: alkaline or clay.
    • Cismontane woodland
    • Coastal scrub
    • Pinyon and juniper woodland
    • Valley and foothill grassland
Rarity Status Glossary
Occurrence Data from DFG
California Natural Diversity Database Glossary
  • Total # of Known Element Occurrences: 97
  • Element Occurrence Ranks:
    A B C D X U
    7 5 1 4 1 79
  • Population Status:
    >20 yrs
    <=20 yrs
    48 49
  • Presence:
    Present Extant Possibly Extirpated Extirpated
    96 0 1
Notes Glossary
  • Threatened by agricultural conversion and previous construction of San Antonio Reservoir, grazing, non-native plants, and vehicles. Potentially threatened by road maintenance and wind energy development.
  • 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: 2011-11-22
Location Glossary
  • Elevation: 300 - 1705 meters
  • California Endemic: yes
  • States: California
  • California Counties and Islands:   name (code)
    Fresno (FRE),  Kings (KNG) *,  Kern (KRN) *,  Los Angeles (LAX),  Monterey (MNT),  Santa Barbara (SBA),  San Benito (SBT) (*?),  San Luis Obispo (SLO) *,  Ventura (VEN)
  • Quads:   name (DWR code) USGS code
    Goleta (143A) 34119D7,  Lockwood Valley (165A) 34119F1,  San Guillermo (165B) 34119F2,  Reyes Peak (166A) 34119F3,  Rancho Nuevo Creek (166B) 34119F4,  Wheeler Springs (166D)* 34119E3,  Lake Cachuma (168C) 34119E8,  Lompoc (170B) 34120F4,  Surf (171A) 34120F5,  Pleito Hills (190A) 34119H1,  Sawmill Mountain (190C)* 34119G2,  Cuddy Valley (190D) 34119G1,  Ballinger Canyon (191B) 34119H4,  Cuyama Peak (191C) 34119G4,  Apache Canyon (191D) 34119G3,  Salisbury Potrero (192C) 34119G6,  Fox Mountain (192D) 34119G5,  Bates Canyon (193B) 34119H8,  Casmalia (196D) 34120G5,  Mojave (211C)* 35118A2,  Tehachapi NE (212A)* 35118B3,  Tehachapi North (212B)* 35118B4,  Tehachapi South (212C) 35118A4,  Monolith (212D)* 35118A3,  Wells Ranch (217C) 35119A6,  Elkhorn Hills (217D)* 35119A5,  Taylor Canyon (218C) 35119A8,  Caliente Mtn. (218D) 35119A7,  Reward (242C) 35119C6,  Carneros Rocks (243A)* 35119D7,  Las Yeguas Ranch (243B)* 35119D8,  Simmler (243C) 35119C8,  McKittrick Summit (243D) 35119C7,  La Panza (244C)* 35120C2,  California Valley (244D)* 35120C1,  Camatta Ranch (245A) 35120D3,  Wilson Corner (245B) 35120D4,  Freeman Junction (258C) 35117E8,  Orchard Peak (267B)* 35120F2,  Cholame (268A) 35120F3,  Garza Peak (291B)* 35120H2,  Tent Hills (291C) 35120G2,  The Dark Hole (292A) 35120H3,  Cholame Valley (292D) 35120G3,  Hames Valley (294B)* 35120H8,  Tierra Redonda Mountain (294C)* 35120G8,  Burnett Peak (295C) 35121G2,  Bryson (295D) 35121G1,  Coalinga (315A)* 36120B3,  Curry Mountain (315C)* 36120A4,  Smith Mountain (316D) 36120A5,  Monarch Peak (317A) 36120B7,  Nattrass Valley (317B) 36120B8,  San Lucas (318A)(*?) 36121B1,  Thompson Canyon (318B)* 36121B2,  Bear Canyon (319D) 36121A3,  Lillis Ranch (338B) 36120D4,  Joaquin Rocks (338C) 36120C4,  Domengine Ranch (338D) 36120C3,  Ciervo Mtn. (339A) 36120D5,  Santa Rita Peak (339D) 36120C5,  Rock Spring Peak (340B) 36120D8,  Lonoak (340C)* 36120C8,  Greenfield (341C) 36121C2,  Tumey Hills (361C) 36120E6,  Panoche (362D)(*?) 36120E7
  • 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 1709
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 ].

34119D7=Goleta (143A) 34119D7;34119F1=Lockwood Valley (165A) 34119F1;34119F2=San Guillermo (165B) 34119F2;34119F3=Reyes Peak (166A) 34119F3;34119F4=Rancho Nuevo Creek (166B) 34119F4;34119E3=Wheeler Springs (166D)* 34119E3;34119E8=Lake Cachuma (168C) 34119E8;34120F4=Lompoc (170B) 34120F4;34120F5=Surf (171A) 34120F5;34119H1=Pleito Hills (190A) 34119H1;34119G2=Sawmill Mountain (190C)* 34119G2;34119G1=Cuddy Valley (190D) 34119G1;34119H4=Ballinger Canyon (191B) 34119H4;34119G4=Cuyama Peak (191C) 34119G4;34119G3=Apache Canyon (191D) 34119G3;34119G6=Salisbury Potrero (192C) 34119G6;34119G5=Fox Mountain (192D) 34119G5;34119H8=Bates Canyon (193B) 34119H8;34120G5=Casmalia (196D) 34120G5;35118A2=Mojave (211C)* 35118A2;35118B3=Tehachapi NE (212A)* 35118B3;35118B4=Tehachapi North (212B)* 35118B4;35118A4=Tehachapi South (212C) 35118A4;35118A3=Monolith (212D)* 35118A3;35119A6=Wells Ranch (217C) 35119A6;35119A5=Elkhorn Hills (217D)* 35119A5;35119A8=Taylor Canyon (218C) 35119A8;35119A7=Caliente Mtn. (218D) 35119A7;35119C6=Reward (242C) 35119C6;35119D7=Carneros Rocks (243A)* 35119D7;35119D8=Las Yeguas Ranch (243B)* 35119D8;35119C8=Simmler (243C) 35119C8;35119C7=McKittrick Summit (243D) 35119C7;35120C2=La Panza (244C)* 35120C2;35120C1=California Valley (244D)* 35120C1;35120D3=Camatta Ranch (245A) 35120D3;35120D4=Wilson Corner (245B) 35120D4;35117E8=Freeman Junction (258C) 35117E8;35120F2=Orchard Peak (267B)* 35120F2;35120F3=Cholame (268A) 35120F3;35120H2=Garza Peak (291B)* 35120H2;35120G2=Tent Hills (291C) 35120G2;35120H3=The Dark Hole (292A) 35120H3;35120G3=Cholame Valley (292D) 35120G3;35120H8=Hames Valley (294B)* 35120H8;35120G8=Tierra Redonda Mountain (294C)* 35120G8;35121G2=Burnett Peak (295C) 35121G2;35121G1=Bryson (295D) 35121G1;36120B3=Coalinga (315A)* 36120B3;36120A4=Curry Mountain (315C)* 36120A4;36120A5=Smith Mountain (316D) 36120A5;36120B7=Monarch Peak (317A) 36120B7;36120B8=Nattrass Valley (317B) 36120B8;36121B1=San Lucas (318A)(*?) 36121B1;36121B2=Thompson Canyon (318B)* 36121B2;36121A3=Bear Canyon (319D) 36121A3;36120D4=Lillis Ranch (338B) 36120D4;36120C4=Joaquin Rocks (338C) 36120C4;36120C3=Domengine Ranch (338D) 36120C3;36120D5=Ciervo Mtn. (339A) 36120D5;36120C5=Santa Rita Peak (339D) 36120C5;36120D8=Rock Spring Peak (340B) 36120D8;36120C8=Lonoak (340C)* 36120C8;36121C2=Greenfield (341C) 36121C2;36120E6=Tumey Hills (361C) 36120E6;36120E7=Panoche (362D)(*?) 36120E7