Species Details

Eriogonum luteolum var. caninum

Tiburon buckwheat

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Classification

Scientific Name: Eriogonum luteolum Greene var. caninum (Greene) Rev.
Common Name: Tiburon buckwheat
Family:	Polygonaceae
Element Code:	PDPGN083S1
USDA Plants Symbol:	ERLUC
Synonyms/Other Names: Eriogonum caninum (Greene) Munz

Conservation Status

CA Rare Plant Rank:	1B.2
Fed List:	None
State List:	None
Global Rank:	G5T2
State Rank:	S2
Other Status:	SB_CalBG/RSABG
CRPR Changes: changed from 3.2 to 1B.2 on 2007-10-10
Add Date:	1974-01-01
Date Edited:	2022-12-06

Ecology and Life History

Lifeform: annual herb

Blooming Period: May-Sep

Elevation:
0 - 700 meters
0 - 2295 feet

General Habitats:

Chaparral
Cismontane woodland
Coastal prairie
Valley and foothill grassland

Microhabitat Details:

Microhabitat:

Gravelly
Sandy
Serpentine

Notes

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.
Threats:
Taxonomy:

Threat List Data from the CNDDB

THREAT LIST:
Threat List Total:	6
	Total EOs	% of EOs
EOs with Threat Listed:	7	27 %
Non-native plant impacts	4	15%
Foot traffic/trampling	3	11%
Development	2	7%
Road/trail construction/maint.	2	7%
Erosion/runoff	1	3%
Grazing	1	3%

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					26
A	B	C	D	X	U
2	0	3	0	0	21

Occurrence Status:
Historical >20 Years	13
Recent <=20 Years	13

Presence:
Presumed Extant	26
Possibly Extirpated	0
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
California (CA)

California Counties and Islands: Name (Code)
Alameda (ALA), Marin (MRN)

Quads: Name (Quad Code)
Bolinas (3712286), Novato (3812215), Oakland East (3712272), Petaluma (3812226)?*, Petaluma River (3812225), San Geronimo (3812216), San Quentin (3712284), San Rafael (3712285)

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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Selected References

CNPS Status Review:

CRPR List Change on 2007-10-10