CNPS Inventory Plant Detail

Eriogonum truncatum

Common Name:	Mt. Diablo buckwheat
Family:	Polygonaceae
Synonyms:
Element Code:	PDPGN085Z0
Full Name:	Eriogonum truncatum T. & G.
USDA PLANTS Symbol:	ERTR11

Biology
Lifeform: annual herb Blooming Period: April - December Habitat: sandy. • Chaparral • Coastal scrub • Valley and foothill grassland

Rarity Status
CA Rare Plant Rank: 1B.1 Rare, threatened, or endangered in California and elsewhere .1: Seriously endangered in California Federal Listing Status: Not Listed State Listing Status: Not Listed State Rank: S2 S2: Imperiled. Global Rank: G2 G2: Imperiled.

Occurrence Data from DFG
California Natural Diversity Database

Total # of Known Element Occurrences: 6
Element Occurrence Ranks:

A B C D X U

0 0 0 0 0 6

Population Status:

Historic >20 yrs	Recent <=20 yrs
6	0

Presence:

Present Extant	Possibly Extirpated	Extirpated
5	1	0

Notes

Rediscovered in May 2005 by Michael Park in Mount Diablo SP; now known from one extant occurrence for which quad location needs confirmation. Potentially threatened by trampling and non-native plants. Much habitat eliminated by urbanization. See Proceedings of the American Academy of Arts and Sciences 8:173 (1870) for original description, and Phytologia 66(4):375-376 (1989) for taxonomic treatment.
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: 2012-01-25

Location

Elevation: 3 - 350 meters

California Endemic: yes

States: California

California Counties and Islands: name (code)
Alameda (ALA), Contra Costa (CCA), Solano (SOL) *

Quads: name (DWR code) USGS code
Antioch South (464A)* 37121H7, Clayton (464B)? 37121H8, Diablo (464C)* 37121G8, Antioch North (481D)* 38121A7, Fairfield South (482A)* 38122B1

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

766

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 .

-121.875,37.875