Species Details

Nemacaulis denudata var. gracilis

slender cottonheads

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Scientific Name:
Nemacaulis denudata Nutt. var. gracilis Goodm. & Benson
Common Name:
slender cottonheads
Family: Polygonaceae
Element Code: PDPGN0G012
USDA Plants Symbol: NEDEG
Synonyms/Other Names:
CA Rare Plant Rank: 2B.2
Fed List: None
State List: None
Global Rank: G3G4T3?
State Rank:
S2
Other Status:
CRPR Changes:
changed from 2.2 to 2B.2 on 2013-06-12
Add Date: 1994-01-01
Date Edited: 2021-05-26
Lifeform: annual herb
Blooming Period: (Mar)Apr-May
JFMAMJJASOND
Elevation:
-50 - 400 meters
-165 - 1310 feet
General Habitats:
  • Coastal dunes
  • Desert dunes
  • Sonoran desert scrub
Microhabitat Details:
Microhabitat:
Notes:
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 MadroƱo 27(2):101-109 (1980) and Phytologia 66(4):390-91 (1989) for taxonomic treatments.
Threats:
Taxonomy:
Threat List Total: 4
Total EOs % of EOs
EOs with Threat Listed: 6 25 %
THREAT LIST:
ORV activity 4 16%
Non-native plant impacts 2 8%
Development 2 8%
Grazing 1 4%
Total Occurrences: 24
Element Occurrence Ranks:
A B C D X U
1 1 0 0 6 16
Occurrence Status:
Historical >20 Years 14
Recent <=20 Years 10
Presence:
Presumed Extant 18
Possibly Extirpated 5
Presumed Extirpated 1
California Endemic:
California Island:
States: Name (Code)
Arizona (AZ), Baja California (BA), California (CA), Sonora, Mexico (SO)
California Counties and Islands: Name (Code)
Imperial (IMP), Riverside (RIV), San Bernardino (SBD), San Diego (SDG)
Quads: Name (Quad Code)
Acolita (3311512), Amos (3311513), Arica Mountains (3411418), Budweiser Wash (3411577), Cactus (3211478), Carrizo Mtn. (3211671), Cathedral City (3311674), Clarks Pass (3411515), Clyde (3211488), Cowhole Mountain (3511518), Coyote Wells (3211568), Desert Hot Springs (3311685), East of Acolita (3311511), Gene Wash (3411432), Glamis (3211581), Glamis NW (3211582), Glamis SE (3211571), Glasgow (3411587), Imperial Beach (3211751), In-ko-pah Gorge (3211661), Kelso Dunes (3411586), La Quinta (3311663), Mecca (3311651), Oceanside (3311724), Old Dad Mtn. (3511517), Painted Gorge (3211578), Palm Springs (3311675), Point Loma (3211762), Rice (3411417), San Luis Rey (3311723), Tortuga (3311523), White Water (3311686)
Notes:
Definitions of codes following a county and/or quad:
* Presumed extirpated
(?) Occurrence confirmed, but possibly extirpated
Quad and county data is imported from the CNDDB. Species may be present in other areas where conditions are favorable. These data should NOT be substituted for pre-project review or for on-site surveys.
Presumed Extant
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