CNPS Inventory Plant Detail

Eriogonum umbellatum var. ahartii

Common Name:	Ahart's buckwheat
Family:	Polygonaceae
Synonyms:
Element Code:	PDPGN086UY
Full Name:	Eriogonum umbellatum Torr. var. ahartii Reveal
USDA PLANTS Symbol:

Biology
Lifeform: perennial herb Blooming Period: June - September Habitat: serpentinite, slopes, openings. • Chaparral • Cismontane woodland

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: 26
Element Occurrence Ranks:

A B C D X U

0 0 0 0 0 26

Population Status:

Historic >20 yrs	Recent <=20 yrs
5	21

Presence:

Present Extant	Possibly Extirpated	Extirpated
26	0	0

Notes
Threatened by road construction and maintenance, vehicles, and fire suppression. Potentially threatened by logging. Not in The Jepson Manual (1993). See Phytologia 86:146 (2004) for original description. To submit rare plant observation data, use the CNDDB field survey form. Please see also the CNPS Rare Plant Data page. Date Added: 2010-11-29 Last Update: 2011-04-21

Location

Elevation: 400 - 2000 meters

California Endemic: yes

States: California

California Counties and Islands: name (code)
Butte (BUT), Plumas (PLU), Yuba (YUB)

Quads: name (DWR code) USGS code
Challenge (558B) 39121D2, American House (574A) 39121F1, Cascade (574B) 39121F2, Clipper Mills (574C) 39121E2, Berry Creek (575B) 39121F4, Cherokee (576A) 39121F5, Pulga (591C) 39121G4, Paradise East (592D) 39121G5

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

3432

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 .

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