Eriogonum corymbosum var. aureum

(M. E. Jones) Reveal

Taxon 32: 293. 1983.

Common names: Golden wild buckwheat
EndemicConservation concern
Basionym: Eriogonum aureum M. E. Jones Proc. Calif. Acad. Sci., ser. 2, 5: 718. 1895
Synonyms: Eriogonum microtheca subsp. aureum (M. E. Jones) S. Stokes
Treatment appears in FNA Volume 5. Treatment on page 259. Mentioned on page 256.
Revision as of 13:54, 28 October 2022 by GeoffLevin (talk | contribs) (Corrected spelling of specific epithet from "microthecum" to "microtheca".)
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Subshrubs or shrubs, 2–6(–8) × 3–8(–12) dm. Leaves cauline 1/2 or more length of flowering stem; petiole 0.5–0.8 cm; blade usually elliptic, 2–4 × 1–1.5 cm, densely tomentose abaxially, usually glabrous and green adaxially. Inflorescences 3–10 cm; branches glabrous or nearly so. Involucres 1–2 × 1–1.5(–2) mm. Flowers 1.5–2.5 mm; perianth yellow to pale yellow, rarely nearly white, glabrous.


Phenology: Flowering Aug–Oct.
Habitat: Gravelly slopes, creosote and blackbrush communities, juniper woodlands
Elevation: 1000-1100 m

Discussion

Variety aureum is known only from Shivwits Hill near Castle Cliffs in Washington County. This rare expression is probably the result of past introgression with the no longer sympatric herbaceous perennial Eriogonum thompsoniae.

Selected References

None.

Lower Taxa

None.
James L. Reveal +
(M. E. Jones) Reveal +
Eriogonum aureum +
Golden wild buckwheat +
1000-1100 m +
Gravelly slopes, creosote and blackbrush communities, juniper woodlands +
Flowering Aug–Oct. +
Endemic +  and Conservation concern +
Eriogonum microtheca subsp. aureum +
Eriogonum corymbosum var. aureum +
Eriogonum corymbosum +
variety +