CNPS Inventory Plant Detail

Nemacaulis denudata var. gracilis

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

Biology
Lifeform: annual herb Blooming Period: March - May Habitat: • Coastal dunes • Desert dunes • Sonoran desert scrub

Rarity Status
CA Rare Plant Rank: 2.2 Rare, threatened, or endangered in California, but more common elsewhere .2: Fairly endangered in California Federal Listing Status: Not Listed State Listing Status: Not Listed State Rank: S2 S2: Imperiled. Global Rank: G3G4T3? T3: Vulnerable. G3: (species) Vulnerable. G4: (species) Apparently secure, considering populations outside California.

Occurrence Data from DFG
California Natural Diversity Database

Total # of Known Element Occurrences: 23
Element Occurrence Ranks:

A B C D X U

1 0 0 0 6 16

Population Status:

Historic >20 yrs	Recent <=20 yrs
13	10

Presence:

Present Extant	Possibly Extirpated	Extirpated
17	5	1

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 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: 2010-03-15

Location

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, 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
USDA PLANTS Calflora CalPhotos Consortium of California Herbaria California Department of Fish and Game: CNDDB Quick Viewer

Suggested Citation
California Native Plant Society (CNPS). Inventory of Rare and Endangered Plants (online edition, v8-01a). California Native Plant Society. Sacramento, CA. Accessed on .

-116.0,33.5