Eriogonum esmeraldense |
Eriogonum esmeraldense var. esmeraldense |
|||||
---|---|---|---|---|---|---|
Esmeralda buckwheat, Esmeralda wild buckwheat |
Esmeralda buckwheat, Esmeralda wild buckwheat |
|||||
Habit | Herbs, erect to spreading, annual, (0.5–)1–5(–10) dm, glabrous or glandular proximally, mostly grayish. | Plants (0.5–)1–5(–10) dm. | ||||
Stems | caudex absent; aerial flowering stems erect, solid, not fistulose, 0.5–1(–3) dm, glabrous or sparsely glandular proximally. |
|||||
Aerial flowering stems | glabrous. |
|||||
Leaves | basal; petiole 0.5–4 cm, strigose to hispid; blade obovate to round-ovate, 0.5–2.5 × 0.4–2 cm, sparsely strigose to pilose-hispid, often slightly glandular, grayish, greenish, or reddish on both surfaces, or reddish adaxially, margins plane. |
|||||
Inflorescence(s) | cymose, open to diffuse, 5–40(–70) × 5–50 cm; branches not fistulose, glabrous or sparsely glandular near proximal nodes; bracts 3, scalelike, 0.5–3 × 0.5–2 mm. |
branches glabrous. |
||||
Peduncles | spreading to reflexed, straight, slender to filiform, 0.2–1.5 cm, glabrous. |
|||||
Involucres | narrowly turbinate, 0.8–1.8 × 0.5–1.2 mm, glabrous; teeth 4–5, erect, 0.2–0.4 mm. |
|||||
Flowers | 1–3 mm; perianth white to pinkish with greenish or reddish midribs, glabrous, minutely pustulose proximally; tepals monomorphic, oblanceolate to oblong; stamens included, 1–1.5(–1.8) mm; filaments glabrous. |
1–2 mm. |
||||
Achenes | light brown, 3-gonous, 1.4–2.5 mm, glabrous. |
1.4–1.8 mm. |
||||
Eriogonum esmeraldense |
Eriogonum esmeraldense var. esmeraldense |
|||||
Phenology | Flowering May–Oct. | |||||
Habitat | Sandy flats and slopes, sagebrush communities, pinyon-juniper and montane conifer woodlands | |||||
Elevation | 1700-3200 m (5600-10500 ft) | |||||
Distribution |
CA; NV; UT
|
CA; NV; UT |
||||
Discussion | Varieties 2 (2 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Variety esmeraldense is locally common throughout most of its range. Its greatest concentration is along the eastern edge of the Sierra Nevada in Mono and Inyo counties, California, and adjacent desert ranges eastward into western Esmeralda and Mineral counties, Nevada. A second area of concentration is the high mesa region of southern Nye County, Nevada, north and east of Beatty. An isolated population occurs in northeastern Washoe and adjacent northwestern Humboldt counties in northwestern Nevada. The isolated population in the Tushar Mountains of Sevier County, Utah, recently named var. tayei, is likely a recent introduction, probably via shipments of livestock. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
||||
Key |
|
|||||
Source | FNA vol. 5, p. 392. | FNA vol. 5, p. 393. | ||||
Parent taxa | Polygonaceae > subfam. Eriogonoideae > Eriogonum > subg. Ganysma | Polygonaceae > subfam. Eriogonoideae > Eriogonum > subg. Ganysma > Eriogonum esmeraldense | ||||
Sibling taxa | ||||||
Subordinate taxa | ||||||
Synonyms | E. esmeraldense var. tayei | |||||
Name authority | S. Watson: Proc. Amer. Acad. Arts 24: 85. (1889) | unknown | ||||
Web links |