Eriogonum sphaerocephalum var. sphaerocephalum

Common names: Rock wild buckwheat
IllustratedEndemic
Treatment appears in FNA Volume 5. Treatment on page 362. Mentioned on page 361, 363.
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Leaf blades usually oblanceolate, mostly lanate to tomentose on both surfaces, margins usually plane. Inflorescences umbellate or compound-umbellate. Perianths bright yellow.


Phenology: Flowering May–Jul.
Habitat: Sandy to gravelly flats and slopes, mixed grassland and sagebrush communities, juniper and montane conifer woodlands
Elevation: (100-)300-2000(-2300) m

Distribution

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Calif., Idaho, Nev., Oreg., Wash.

Discussion

Variety sphaerocephalum is common and widespread in eastern Washington, eastern Oregon, and southwestern Idaho, less so in northern and central-western Nevada, and infrequent in California. A collection supposedly obtained in 1883 from the “Flathead region” of Montana (Ayres s.n., NY) is discounted as to location.

Selected References

None.

Lower Taxa

None.
James L. Reveal +
Douglas ex Bentham +
Rock wild buckwheat +
Calif. +, Idaho +, Nev. +, Oreg. +  and Wash. +
(100-)300-2000(-2300) m +
Sandy to gravelly flats and slopes, mixed grassland and sagebrush communities, juniper and montane conifer woodlands +
Flowering May–Jul. +
Trans. Linn. Soc. London +
Illustrated +  and Endemic +
Eriogonum sphaerocephalum var. sphaerocephalum +
Eriogonum sphaerocephalum +
variety +