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Nevada City Buckwheat

Eriogonum prattenianum Dur.

Description

provided by eFloras
Herbs or subshrubs, spreading and matted or rounded to erect, 1-5 × 3-5 dm, glabrous. Stems: caudex spreading to erect; aerial flowering stems erect, slender, solid, not fistulose, arising at nodes of caudex branches and at distal nodes of short, non-flowering aerial branches, (0.5-)1-3 dm, glabrous, with a whorl of 3-6, leaflike bracts ca. midlength, similar to leaf blades, 0.7-1 × 0.2-0.4 cm. Leaves in compact basal rosettes; petiole 0.1-0.5 cm, tomentose; blade elliptic to ovate, 0.5-1.5(-2) × 0.2-0.7 cm, densely white-tomentose on both surfaces or sometimes subglabrous and pale green adaxially, margins entire, plane. Inflorescences capitate, 0.8-2 cm wide; branches absent; bracts absent immediately below involucre. Involucres 1 per node, campanulate, 3-4 × 3-8 mm, tomentose; teeth 8-10, occasionally lobelike, erect to reflexed, 1-3 mm. Flowers 3-8 mm, including 1-1.5 mm stipelike base; perianth yellow, glabrous; tepals monomorphic, spatulate to obovate; stamens exserted, 3-4 mm; filaments pilose proximally. Achenes light to rusty brown, 4-5 mm, glabrous.
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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.
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Flora of North America @ eFloras.org
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Flora of North America Editorial Committee
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Eriogonum prattenianum

provided by wikipedia EN

Eriogonum prattenianum is a species of wild buckwheat known by the common name Nevada City buckwheat.

Description

Eriogonum prattenianum is a small shrub growing up to about half a meter tall when erect in form or growing in a clump or mat lined with oval-shaped woolly leaves. The inflorescence arises on a slender scape and bears a rounded cluster of yellow flowers.

Distribution

Eriogonum prattenianum is endemic to California, where it can be found in many scattered disjunct populations in the Sierra Nevada and its foothills.

Taxonomy

There are two varieties of this species. The more common var. prattenianum occurs in scattered populations in the mountains and foothills, while the uncommon var. avium is limited to granite outcrops in the Sierra Nevada slopes of Madera and Fresno Counties. The latter is generally a smaller plant than the former.

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Eriogonum prattenianum: Brief Summary

provided by wikipedia EN

Eriogonum prattenianum is a species of wild buckwheat known by the common name Nevada City buckwheat.

license
cc-by-sa-3.0
copyright
Wikipedia authors and editors
original
visit source
partner site
wikipedia EN