Eriogonum luteolum var. caninum

Tiburon buckwheat

Family: Polygonaceae · Type: annual · Native

Conservation status: CNPS 1B.2

Tiburon buckwheat is a rare (CNPS 1B.2) California native annual found in central northern Coast Range Interior, northern Coast, and northern San Francisco Bay regions including Colusa, Marin, and Alameda counties, growing on serpentine landscapes at elevations below 700 meters. Flowering from May to October, this plant produces delicate white to rose-colored flowers in small clusters approximately 1.5 to 2.5 millimeters long. Growing with generally prostrate to weakly erect stems 2 to 10 centimeters tall, it forms low-spreading patches across its serpentine habitat. Its leaves are both basal and along the stem, with wide blades that provide ground-hugging coverage. The small fruits measure 1.4 to 1.6 millimeters, complementing the plant's diminutive and understated form.

Habitat: Serpentine

Bloom period: May-Oct

Elevation: < 700 m

Bioregions: c NCoRI (Colusa Co.), n CCo, n SnFrB (Marin, Alameda cos.).

California counties: Marin, Alameda, Solano, Contra Costa, Sonoma, Monterey, Santa Barbara, Mendocino, Sierra, San Mateo, Napa

Data from The California Species Project — 14,000+ California species with verified data from CNPS, CDFW, USFWS, Jepson eFlora, Cal-IPC, and more.