CNPS Inventory Plant Detail

Eriogonum luteolum var. caninum

Common Name:	Tiburon buckwheat
Family:	Polygonaceae
Synonyms:	Eriogonum caninum
Element Code:	PDPGN083S1
Full Name:	Eriogonum luteolum Greene var. caninum (Greene) Rev.
USDA PLANTS Symbol:	ERLUC

Biology
Lifeform: annual herb Blooming Period: May - September Habitat: serpentinite, sandy to gravelly. • Chaparral • Cismontane woodland • Coastal prairie • Valley and foothill grassland

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: S2 S2: Imperiled. Global Rank: G5T2 T2: Imperiled. G5: (species) Secure, considering populations outside California.

Occurrence Data from DFG
California Natural Diversity Database

Total # of Known Element Occurrences: 19
Element Occurrence Ranks:

A B C D X U

2 0 1 0 0 16

Population Status:

Historic >20 yrs	Recent <=20 yrs
12	7

Presence:

Present Extant	Possibly Extirpated	Extirpated
19	0	0

Notes

Not clearly distinguishable from var. luteolum north of Tiburon. E. luteolum is similar to E. gracile to the south and E. vimineum to the northeast. Threatened by development, foot traffic, and non-native plants. See Flora Franciscana, pp. 150-151 (1891) by E. Greene for original description, and Phytologia 66(4):378-379 (1989) for alternative treatment which restricts var. caninum to ALA and MRN counties.
To submit rare plant observation data, use the CNDDB field survey form. Please see also the CNPS Rare Plant Data page.
Date Added: 1974-01-01
Last Update: 2010-03-15

Location

Elevation: 0 - 700 meters

California Endemic: yes

States: California

California Counties and Islands: name (code)
Alameda (ALA), Contra Costa (CCA), Marin (MRN), Sonoma (SON) ?*

Quads: name (DWR code) USGS code
Oakland East (465C) 37122G2, San Quentin (466B) 37122H4, San Rafael (467A) 37122H5, Bolinas (467B) 37122H6, Cordelia (482B) 38122B2, Petaluma (484B)?* 38122B6, San Geronimo (484C) 38122A6, Novato (484D) 38122A5

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

733

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 .

-122.5,38.0