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Image of Pahrump Valley buckwheat
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Pahrump Valley Buckwheat

Eriogonum bifurcatum Reveal

Comments

provided by eFloras
Eriogonum bifurcatum is restricted to the Mesquite, Pahrump, and Stewart valleys along the California-Nevada border in southeastern Inyo, northwestern Clark, and southwestern Nye counties. It is closely related to E. exaltatum, and spring-flowering specimens of the latter are impossible to distinguish from mature individuals of E. bifurcatum. The Las Vegas populations (last collected in 1941) formerly called E. bifurcatum are here tentatively assigned to E. exaltatum. The Pahrump Valley wild buckwheat is currently considered a “sensitive” species, and habitat protection is being considered.
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Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of North America Vol. 5 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
source
Flora of North America @ eFloras.org
editor
Flora of North America Editorial Committee
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eFloras.org
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eFloras

Description

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Herbs, spreading, annual, 1-4 dm, glabrous, greenish to grayish. Stems: caudex absent; aerial flowering stems erect, solid, not fistulose, 0.05-0.3 dm, often obscured by leaves, glabrous. Leaves basal; petiole 1-4 cm, tomentose; blade round-cordate, 1-3 × 1-3 cm, densely white-tomentose abaxially, less so to floccose and greenish adaxially, margins plane. Peduncles absent or erect, straight, slender, 0.1-0.5 cm, glabrous. Inflorescences cymose, spreading and flat-topped, 5-30 × 10-50 cm; branches glabrous; bracts scalelike, 1-1.5 × 0.4-1 mm. Involucres turbinate, 2-2.5 × 1.3-2 mm; teeth 5, erect, 0.4-0.5 mm. Flowers 1.5-2 mm, glabrous; perianth white with greenish to reddish midribs, becoming faintly pinkish, glabrous; tepals dimorphic, those of outer whorl obovate to cordate, those of inner whorl lanceolate; stamens exserted, 2-3 mm; filaments pilose proximally. Achenes light brown, 3-gonous, 2-2.3 mm, glabrous. 2n = 40.
license
cc-by-nc-sa-3.0
copyright
Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of North America Vol. 5 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
source
Flora of North America @ eFloras.org
editor
Flora of North America Editorial Committee
project
eFloras.org
original
visit source
partner site
eFloras

Distribution

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Calif., Nev.
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cc-by-nc-sa-3.0
copyright
Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of North America Vol. 5 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
source
Flora of North America @ eFloras.org
editor
Flora of North America Editorial Committee
project
eFloras.org
original
visit source
partner site
eFloras

Flowering/Fruiting

provided by eFloras
Flowering May-Jun.
license
cc-by-nc-sa-3.0
copyright
Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of North America Vol. 5 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
source
Flora of North America @ eFloras.org
editor
Flora of North America Editorial Committee
project
eFloras.org
original
visit source
partner site
eFloras

Habitat

provided by eFloras
Alkaline sandy flats and slopes, saltbush communities; of conservation concern; 600-800m.
license
cc-by-nc-sa-3.0
copyright
Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of North America Vol. 5 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
source
Flora of North America @ eFloras.org
editor
Flora of North America Editorial Committee
project
eFloras.org
original
visit source
partner site
eFloras