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Montana Field Guide

Montana Field Guides

Slender Buckwheat - Eriogonum microthecum

Status Under Review
Native Species

Global Rank: G5
State Rank: S3?

Agency Status
MNPS Threat Rank:

External Links

General Description
Perennial subshrub with woody stems and a branched caudex. Flowering stems ascending, 10–40 cm. Leaves all cauline; the blade linear to narrowly obovate, 1–3 cm long, tomentose, densely below, less so above, margins often rolled under. Inflorescence an open cyme, often flat-topped; bracts scale-like; involucres glabrate to sparsely tomentose, 5-lobed, 2–3 mm long. Flowers 2–4 mm long, white or yellowish, cup-shaped; tepals glabrous, similar in shape; stamens exserted. Achenes 2–3 mm long (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Species Range

Range Comments
WA to MT, south to CA, AZ and NM (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Observations in Montana Natural Heritage Program Database
Number of Observations: 23

(Click on the following maps and charts to see full sized version) Map Help and Descriptions
Relative Density



(Observations spanning multiple months or years are excluded from time charts)


  • Additional ReferencesLegend:   View Online Publication
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    • Britton, M. P. 1955. An ecological study of a relict grassland and an adjacent grazed pasture in Beaverhead Valley, Montana. M.S. thesis. Montana State University, Bozeman. 23 pp.
    • Lesica, P., M.T. Lavin, and P.F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.
    • Quire, R.L. 2013. The sagebrush steppe of Montana and southeastern Idaho shows evidence of high native plant diversity, stability, and resistance to the detrimental effects of nonnative plant species. M.Sc. Thesis. Bozeman, MT: Montana State University. 124 p.
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Citation for data on this website:
Slender Buckwheat — Eriogonum microthecum.  Montana Field Guide.  .  Retrieved on , from