Species Details

Eriogonum heermannii var. occidentale

western Heermann's buckwheat

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Classification

Scientific Name: Eriogonum heermannii Dur. & Hilg. var. occidentale S. Stokes
Common Name: western Heermann's buckwheat
Family:	Polygonaceae
Element Code:	PDPGN082P6
USDA Plants Symbol:	ERHEO
Synonyms/Other Names:

Conservation Status

CA Rare Plant Rank:	1B.2
Fed List:	None
State List:	None
Global Rank:	G5T2
State Rank:	S2
Other Status:	BLM_S
CRPR Changes: changed from 4.2 to 1B.2 on 2015-06-15
Add Date:	1994-01-01
Date Edited:	2021-12-09

Ecology and Life History

Lifeform: perennial deciduous shrub
Blooming Period: Jul-Oct
Elevation: 105 - 795 meters 345 - 2610 feet
General Habitat: Cismontane woodland (openings)
General Micro Habitat: usually alluvium floodplains
Micro Habitat: Clay (rarely) Roadsides (usually) Serpentinite (often) Shale (rarely) Slopes (rarely)

Notes

Notes: Previously CRPR 4.2; rarer than originally thought. Possibly threatened by hydrological alterations caused by past vehicle use. See Leaflets of Western Botany 1(4):30 (1932) for original description, and Phytologia 66(4):314-316 (1989) for taxonomic treatment.
Threats:
Taxonomy:
Other:

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					12
A	B	C	D	X	U
0	0	0	0	0	12

Occurrence Status:
Historical >20 Years	6
Recent <=20 Years	6

Presence:
Presumed Extant	12
Possibly Extirpated	0
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
California (CA)

California Counties and Islands: Name (Code)
Fresno (FRE), Monterey (MNT), San Benito (SBT)

Quads: Name (Quad Code)
Bickmore Canyon (3612152), Hepsedam Peak (3612037), Hernandez Reservoir (3612047), Idria (3612046), Lonoak (3612038), Panoche (3612057), Rock Spring Peak (3612048), Smith Mountain (3612015), Topo Valley (3612141), Tres Pinos (3612173)

Notes:

Definitions of codes following a county and/or quad:
*		Presumed extirpated
(?)		Occurrence confirmed, but possibly extirpated
Quad and county data is imported from the CNDDB. Species may be present in other areas where conditions are favorable. These data should NOT be substituted for pre-project review or for on-site surveys.

Regional Map

Map

Presumed Extant

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Counties Quads

Selected References

CNPS Status Review:

CRPR List Change on 2015-06-15