Compilation
Eriogonum auriculatum

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Name

Identification
Eriogonum auriculatum Benth. [family POLYGONACEAE ] Verified by James Lauritz Reveal, Eriogonum latifolium Benth. [family POLYGONACEAE ] (stored under name);
Related name
  • Eriogonum latifolium
  • Eriogonum nudum
  • Eriogonum auriculatum
  • Eriogonum var.nudum
Common name
  • Ear-shaped wild buckwheat, Flora of North America Vol. 5

Flora

Entry for Eriogonum nudum Douglas ex Bentham var. auriculatum (Bentham) J. P. Tracy ex Jepson [family POLYGONACEAE]
Herbarium
Flora of North America (FNA)
Collection
Flora of North America
Resource Type
Reference Sources
Entry From
Flora of North America, Vol 5,
Names
Eriogonum nudum Douglas ex Bentham var. auriculatum (Bentham) J. P. Tracy ex Jepson [family POLYGONACEAE], Fl. Calif., 1: 420. 1914
Eriogonum auriculatum Bentham [family POLYGONACEAE], Trans. Linn. Soc. London, 17: 412. 1836
Eriogonum latifolium Smith var. alternans S. Stokes [family POLYGONACEAE]
Eriogonum latifolium subsp. auriculatum (Bentham) S. Stokes [family POLYGONACEAE]
Treatment Author(s)
James L. Reveal
Information
Plants 5–15(–20) dm. Aerial flowering stems occasionally fistulose, 2–5(–10) dm, glabrous. Leaves sheathing; blade 3–7 × 2–4 cm, tomentose abaxially, subglabrous or glabrous adaxially, margins strongly undulate-crisped. Inflorescences cymose, 30–100(–150) × 10–80 cm; branches glabrous. Involucres (2–)3–5 per cluster, 3–4 mm, glabrous or sparsely pubescent. Flowers 2.5–3 mm; perianth white to pink, rarely yellowish, glabrous or sparsely pubescent. 2n = 80.
Phenology
may (spring), jun-aug (summer), sep-oct (fall)
Altitude range
0–1200 m;
Distribution
USA Calif.
Discussion
Variety auriculatum is a highly variable taxon that occurs along the coast and in the adjacent mountains (Alameda, Contra Costa, Humboldt, Lake, Marin, Monterey, Napa, San Benito, San Francisco, San Luis Obispo, San Mateo, Santa Clara, Santa Cruz, Solano, Sonoma, and western Stanislaus counties).
A related and as yet undescribed variety, known only from the Antioch sand dunes area of Contra Costa County, California, is the host for the federally endangered Lange’s metalmark butterfly (Apodemia mormo langei).

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