Eriogonum luteolum var. caninum

(Greene) Reveal

Great Basin Naturalist 40: 148. 1980.

Common names: Tiburon wild buckwheat
Basionym: Eriogonum vimenum var. caninum Greene Fl. Francisc., 150. 1891
Synonyms: Eriogonum caninum (Greene) Munz
Treatment appears in FNA Volume 5. Treatment on page 421. Mentioned on page 420.
Revision as of 21:57, 16 December 2019 by FNA>Volume Importer

Plants protrate to spreading, 0.5–3 dm, glabrous. Aerial flowering stems mostly prostrate to weakly erect, 0.2–1 dm. Leaves basal and cauline; blade oblong-ovate. Inflorescences 3–30 cm. Involucres sessile or terminal on branchlets, turbinate, 3–4 mm. Flowers 1.5–2.5 mm; perianth white to rose. Achenes 1.4–1.6 mm. 2n = 24.


Phenology: Flowering May–Oct.
Habitat: Sandy to gravelly serpentine flats and slopes, mixed grassland and chaparral communities, oak and pine woodlands
Elevation: 0-700 m

Discussion

The elegant variety caninum is localized in the Tiburon area of Marin County and in the Oakland Hills of Alameda County. It is similar to E. nortonii in form and habit. North of Tiburon, and especially on Mt. Tamalpais, a sharp distinction between var. luteolum and var. caninum is not always possible. Variety caninum is protected at Tiburon near Old St. Hilary’s Chapel in the John Thomas Howell Botanical Garden and in The Nature Conservancy’s Ring Mountain Preserve, and near Oakland in the W. P. Coe State Park.

Selected References

None.

Lower Taxa

None.
James L. Reveal +
(Greene) Reveal +
Eriogonum vimenum var. caninum +
Tiburon wild buckwheat +
0-700 m +
Sandy to gravelly serpentine flats and slopes, mixed grassland and chaparral communities, oak and pine woodlands +
Flowering May–Oct. +
Great Basin Naturalist +
Illustrated +  and Endemic +
Eriogonum caninum +
Eriogonum luteolum var. caninum +
Eriogonum luteolum +
variety +