Nemacaulis denudata var. gracilis
Common Name: slender cottonheads
Family: Polygonaceae
Element Code: PDPGN0G012
Full Name: Nemacaulis denudata Nutt. var. gracilis Goodm. & Benson

2010 Duncan S. Bell
Biology Glossary
Rarity Status Glossary
Occurrence Data from DFG
California Natural Diversity Database Glossary
  • Total # of Known Element Occurrences: 24
  • Element Occurrence Ranks:
    A B C D X U
    1 1 0 0 6 16
  • Population Status:
    >20 yrs
    <=20 yrs
    13 11
  • Presence:
    Present Extant Possibly Extirpated Extirpated
    18 5 1
Notes Glossary
  • Threatened by urbanization near Palm Springs (RIV Co.) and along coast. Intergrades with var. denudata at some coastal localities. See Aliso 4:89 (1958) for original description, and Madroño 27(2):101-109 (1980) and Phytologia 66(4):390-91 (1989) for taxonomic treatments.
  • 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: 2013-06-12
Location Glossary
  • Elevation: -50 - 400 meters
  • California Endemic: no
  • States: California, Arizona, Baja California, Sonora
  • California Counties and Islands:   name (code)
    Imperial (IMP),  Riverside (RIV),  San Bernardino (SBD),  San Diego (SDG)
  • Quads:   name (DWR code) USGS code
    Coyote Wells (006B) 32115F8,  Point Loma (011B) 32117F2,  Imperial Beach (011D) 32117E1,  Clyde (013B) 32114H8,  Cactus (013C) 32114G8,  Glamis (014A) 32115H1,  Glamis NW (014B) 32115H2,  Glamis SE (014D) 32115G1,  Acolita (027C) 33115A2,  East of Acolita (027D) 33115A1,  Tortuga (028A) 33115B3,  Amos (028D) 33115A3,  Oceanside (036B) 33117B4,  Mecca (064D) 33116E1,  La Quinta (065A) 33116F3,  Cathedral City (082C) 33116G4,  Desert Hot Springs (083A) 33116H5,  Palm Springs (083D) 33116G5,  Arica Mountains (097C) 34114A8,  Rice (097D) 34114A7,  Clarks Pass (100D) 34115A5,  Gene Wash (120C) 34114C2,  Kelso Dunes (176B) 34115H6,  Glasgow (177A) 34115H7,  Budweiser Wash (177D) 34115G7,  Old Dad Mtn. (202D) 35115A7
  • 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 1741
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 ].

32115F8=Coyote Wells (006B) 32115F8;32117F2=Point Loma (011B) 32117F2;32117E1=Imperial Beach (011D) 32117E1;32114H8=Clyde (013B) 32114H8;32114G8=Cactus (013C) 32114G8;32115H1=Glamis (014A) 32115H1;32115H2=Glamis NW (014B) 32115H2;32115G1=Glamis SE (014D) 32115G1;33115A2=Acolita (027C) 33115A2;33115A1=East of Acolita (027D) 33115A1;33115B3=Tortuga (028A) 33115B3;33115A3=Amos (028D) 33115A3;33117B4=Oceanside (036B) 33117B4;33116E1=Mecca (064D) 33116E1;33116F3=La Quinta (065A) 33116F3;33116G4=Cathedral City (082C) 33116G4;33116H5=Desert Hot Springs (083A) 33116H5;33116G5=Palm Springs (083D) 33116G5;34114A8=Arica Mountains (097C) 34114A8;34114A7=Rice (097D) 34114A7;34115A5=Clarks Pass (100D) 34115A5;34114C2=Gene Wash (120C) 34114C2;34115H6=Kelso Dunes (176B) 34115H6;34115H7=Glasgow (177A) 34115H7;34115G7=Budweiser Wash (177D) 34115G7;35115A7=Old Dad Mtn. (202D) 35115A7