Eriogonum rubricaule

Tidestrom

Proc. Biol. Soc. Wash. 36: 181. 1923

Common names: Lahontan Basin wild buckwheat
Synonyms: Eriogonum laetum S. Stokes Eriogonum trichopes var. rubricaule (Tidestrom) S. Stokes
Treatment appears in FNA Volume 5. Treatment on page 394. Mentioned on page 383.

Herbs, erect, annual, (0.5–)1–4(–8) dm, glabrous, green to yellowish green. Stems: caudex absent; aerial flowering stems erect, occasionally hollow and fistulose, 0.3–1.3(–2) dm, glabrous. Leaves basal; petiole 2–3(–4) cm, pilose-hispid; blade round to reniform, 1–2(–3) × (0.5–)1–3 (3.5) cm, pilose-hispid and bright green on both surfaces, margins plane. Inflorescences narrowly cymose, open, 5–30(–50) × 5–35 cm; branches occasionally fistulose, glabrous; bracts 3, scalelike, 1–4 × 0.5–2 mm. Peduncles erect or nearly so, straight, slender, 0.2–0.3 cm, glabrous. Involucres campanulate, 2.5–3 × 2.5–3 mm, glabrous; teeth 5, erect, 0.5–1 mm. Flowers 1.5–2 mm; perianth pale yellow to yellow with light green or reddish midribs, becoming yellowish red, glabrous, papillate in fruit; tepals monomorphic, narrowly ovate; stamens included to exserted, 1–2 mm; filaments glabrous. Achenes light brown, 3-gonous, 2–2.5 mm, glabrous.


Phenology: Flowering May–Oct.
Habitat: Clayey, sandy or gravelly, often volcanic outcrops, washes, flats, and slopes, saltbush, greasewood, and sagebrush communities, pinyon-juniper woodlands
Elevation: 1100-1800 m

Discussion

Eriogonum rubricaule occurs on the eastern half of the pluvial Lahontan Lake basin of northwestern Nevada (Churchill, Esmeralda, Humboldt, Lander, Lyon, Mineral, Nye, Pershing, and Washoe counties). It tends to occur on or near the old lakeshore at the bases of the mountains, where it is infrequent to locally common.

Selected References

None.

Lower Taxa

None.

... more about "Eriogonum rubricaule"
James L. Reveal +
Tidestrom +
Eriogonum sect. Ganysma +
Lahontan Basin wild buckwheat +
1100-1800 m +
Clayey, sandy or gravelly, often volcanic outcrops, washes, flats, and slopes, saltbush, greasewood, and sagebrush communities, pinyon-juniper woodlands +
Flowering May–Oct. +
Proc. Biol. Soc. Wash. +
Eriogonum laetum +  and Eriogonum trichopes var. rubricaule +
Eriogonum rubricaule +
Eriogonum subg. Ganysma +
species +