Eriogonum ovalifolium var. nivale

(Canby ex Coville) M. E. Jones

Contr. W. Bot. 11: 8. 1903.

Common names: Sierran cushion wild buckwheat
Basionym: Eriogonum nivale Canby ex Coville Contr. U.S. Natl. Herb. 4: 187. 1893
Synonyms: Eriogonum rhodanthum A. Nelson & P. B. Kennedy
Treatment appears in FNA Volume 5. Treatment on page 323. Mentioned on page 319, 320, 324.
Revision as of 20:09, 24 September 2019 by FNA>Volume Importer

Plants 0.5–3 dm wide. Leaf blades usually round, 0.2–0.8 cm, densely lanate to white-tomentose, margins infrequently brownish. Scapes mostly erect, 0.3–5(–13) cm, mostly lanate or tomentose. Inflorescences capitate, 1–2.5 cm wide; branches absent. Involucres 2–4 per cluster, 3–4.5 mm. Flowers 4–5 mm; perianth white to rose or red. 2n = 40.


Phenology: Flowering Jun–Sep.
Habitat: Sandy to gravelly often granitic slopes, ridges, and alpine fell-fields, mixed grassland, mountain meadow, and sagebrush communities, conifer woodlands
Elevation: 1700-4200 m

Distribution

V5 654-distribution-map.gif

B.C., Calif., Nev., Oreg., Utah, Wash.

Discussion

Variety nivale is the common high-elevation expression of the species in desert ranges of the Great Basin and in the Sierra-Cascade cordillera. In northwestern Washington, some plants of var. nivale have scapes to 13 cm (especially in Chellam County). They are well removed from var. purpureum, and have the dense, almost brilliant white tomentum of var. nivale. Plants in the Slide Mountain-Mt. Rose area of west-central Nevada occasionally have the brown leaf margins more commonly seen in the lower-elevation var. eximium. A few populations having off-yellowish flowers are known from the White Mountains of Inyo and Mono counties, California. There as well, the tepals are distinctly marked by a large red midrib. This is similar to the condition found in Eriogonum gilmanii, but in the White Mountains plants the tepals are not globose as in that species nor is the pubescence similar. The variety is ideal for the rock garden and is widely available for cultivation.

Selected References

None.

Lower Taxa

None.
James L. Reveal +
(Canby ex Coville) M. E. Jones +
Eriogonum nivale +
Sierran cushion wild buckwheat +
B.C. +, Calif. +, Nev. +, Oreg. +, Utah +  and Wash. +
1700-4200 m +
Sandy to gravelly often granitic slopes, ridges, and alpine fell-fields, mixed grassland, mountain meadow, and sagebrush communities, conifer woodlands +
Flowering Jun–Sep. +
Contr. W. Bot. +
Illustrated +  and Endemic +
Eriogonum rhodanthum +
Eriogonum ovalifolium var. nivale +
Eriogonum ovalifolium +
variety +