familyPolygonaceae
subfamilyPolygonaceae subfam. Eriogonoideae
genusEriogonum
subgenusEriogonum subg. Eriogonum
speciesEriogonum longifolium
Eriogonum longifolium var. longifolium
Common names: Long-leaf wild buckwheat
IllustratedEndemic
Synonyms: Eriogonum longifolium subsp. diffusum S. Stokes Eriogonum longifolium var. lindheimeri Engelmann & A. Gray Eriogonum longifolium var. plantagineum Eriogonum vespinum
Plants 3–20 dm, tomentose to nearly glabrous. Leaves: basal leaf blade 0.5–20 × 0.3–3 cm, tomentose abaxially, less so to floccose or nearly glabrous adaxially. Peduncles 0.3–3 cm. Involucres turbinate to campanulate, 4–6 × 2.5–6 mm. Flowers 5–11 mm, including 0.5–2.5 mm stipelike base. Achenes 4–6 mm.
Phenology: Flowering May–Oct.
Habitat: Sandy to gravelly, often calcareous flats, slopes, and outcrops, mixed grassland, creosote bush, and mesquite communities, oak and conifer woodlands
Elevation: 60-1100(-1300) m
Distribution
Ark., Kans., La., Mo., N.Mex., Okla., Tex.
Discussion
Variety longifolium is widespread and common in the south-central United States. Its roots were used as food by the Kiowa (P. A. Vestal and R. E. Schultes 1939), and an infusion of the roots was taken by the Comanche for stomach trouble (G. G. Carlson and V. H. Jones 1940).
Selected References
None.
Lower Taxa
None.
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