CNPS Inventory Plant Detail

Chamaesyce ocellata ssp. rattanii

Common Name:	Stony Creek spurge
Family:	Euphorbiaceae
Synonyms:	Euphorbia ocellata var. rattanii
Element Code:	PDEUP0D1P1
Full Name:	Chamaesyce ocellata (Dur. & Hilg.) Millsp. ssp. rattanii (Wats.) Koutnik
USDA PLANTS Symbol:	CHOCR

Biology
Lifeform: annual herb Blooming Period: May - October Habitat: • Chaparral • Valley and foothill grassland (sandy or rocky)

Rarity Status

CA Rare Plant Rank: 1B.2
Rare, threatened, or endangered in California and elsewhere
.2: Fairly endangered in California
Federal Listing Status:
Not Listed
State Listing Status:
Not Listed
State Rank: S1S2
S1: Critically Imperiled. S2: Imperiled.
Global Rank: G4T1T2
T1: Critically Imperiled. T2: Imperiled. G4: (species) Apparently secure, considering populations outside California.

Occurrence Data from DFG
California Natural Diversity Database

Total # of Known Element Occurrences: 35
Element Occurrence Ranks:

A B C D X U

1 1 0 0 0 33

Population Status:

Historic >20 yrs	Recent <=20 yrs
19	16

Presence:

Present Extant	Possibly Extirpated	Extirpated
35	0	0

Notes

Need quads for COL Co. Confused with ssp. ocellata. Threatened by foot trampling, recreational activities, and vehicles. See Proceedings of the American Academy of Arts and Sciences 20:372 (1885) for original description, Rhodora 43:97-154, 168-286 (1941) for taxonomic treatment, and Madroño 32(3):187-189 (1985) for revised nomenclature.
To submit rare plant observation data, use the CNDDB field survey form. Please see also the CNPS Rare Plant Data page.
Date Added: 1980-01-01
Last Update: 2010-10-22

Location

Elevation: 85 - 800 meters

California Endemic: yes

States: California

California Counties and Islands: name (code)
Glenn (GLE), Tehama (TEH)

Quads: name (DWR code) USGS code
Stonyford (564A) 39122D5, Chrome (580A) 39122F5, Elk Creek (580D) 39122E5, Corning (594B) 39122H2, Kirkwood (594C) 39122G2, Henleyville (595A) 39122H3, Sehorn Creek (595C) 39122G4, Black Butte Dam (595D) 39122G3, Paskenta (596A) 39122H5, Hall Ridge (596C) 39122G6, Newville (596D) 39122G5, Cold Fork (612B) 40122B6, Raglin Ridge (612C) 40122A6, Lowrey (612D) 40122A5, Inskip Hill (627C) 40121C8

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

458

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 .

-122.375,39.75