Eriogonum subreniforme

S. Watson

Proc. Amer. Acad. Arts 12: 260. 1877.

Common names: Kidney-shaped wild buckwheat
Synonyms: Eriogonum filicaule S. Stokes
Treatment appears in FNA Volume 5. Treatment on page 405. Mentioned on page 385.
Revision as of 20:10, 24 September 2019 by FNA>Volume Importer

Herbs, erect or slight spreading, annual, 1–5(–7) dm, mostly glabrous, usually greenish. Stems: caudex absent; aerial flowering stems erect, solid, not fistulose, (0.2–)0.5–1.5 dm, glabrous except floccose to glabrescent proximally. Leaves basal; petiole (1–)2–6 cm, mostly floccose; blade reniform to orbiculate, (0.3–)1–3.5(–4) × (0.3–)1–4(–5) cm, densely white-tomentose abaxially, hirsute to floccose or glabrous and greenish adaxially, margins plane. Inflorescences cymose, open to somewhat diffuse, 5–40(–50) × 5–35 cm; branches glabrous; bracts 3, scalelike, 1–3 × 1.5–2.5 mm. Peduncles erect or nearly so, straight, filiform, 0.5–2.5 cm, glabrous or rarely floccose at or before anthesis. Involucres turbinate, 0.5–1 × 0.6–0.9 mm, glabrous; teeth 5, erect, 0.2–0.4 mm. Flowers 0.6–1.6(–2) mm; perianth white to rose or rarely yellowish, glabrous or puberulent to sparsely hirsute; tepals monomorphic, lanceolate to spatulate or elliptic to ovate; stamens included to slightly exserted, 0.7–1.4 mm; filaments glabrous. Achenes light to dark brown, 3-gonous, 1.7–2 mm, glabrous.


Phenology: Flowering Apr–Oct.
Habitat: Sandy to gypsophilous or clayey flats and slopes, saltbush, greasewood, blackbrush, and creosote bush communities, oak and pinyon-juniper woodlands
Elevation: 800-2100 m

Discussion

Eriogonum subreniforme is generally rare to infrequent throughout its scattered range in northern Arizona (Apache, Coconino, Mohave, and Navajo counties), northwestern New Mexico (McKinley and San Juan counties), and southern Utah (Garfield, Kane, and Washington counties). Even in a “good” year, the plants are rarely common and never weedy.

Selected References

None.

Lower Taxa

None.
... more about "Eriogonum subreniforme"
James L. Reveal +
S. Watson +
Eriogonum sect. Ganysma +
Kidney-shaped wild buckwheat +
Ariz. +, N.Mex. +  and Utah. +
800-2100 m +
Sandy to gypsophilous or clayey flats and slopes, saltbush, greasewood, blackbrush, and creosote bush communities, oak and pinyon-juniper woodlands +
Flowering Apr–Oct. +
Proc. Amer. Acad. Arts +
Eriogonum filicaule +
Eriogonum subreniforme +
Eriogonum subg. Ganysma +
species +