familyPolygonaceae
subfamilyPolygonaceae subfam. Eriogonoideae
genusEriogonum
subgenusEriogonum subg. Eucycla
speciesEriogonum corymbosum
Eriogonum corymbosum var. aureum
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
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.