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Montana Field Guide

Montana Field Guides

Imperfect Wild Buckwheat - Eriogonum mancum

Native Species

Global Rank: G4
State Rank: S4

Agency Status
MNPS Threat Rank:

External Links

General Description
Cushion-forming perennial from a woody, branched caudex. Flowering stems erect, 1–10 cm, covered in old leaf bases below. Leaves all basal; the blades oblanceolate, tomentose, 5–15 mm long. Inflorescence capitate with a cluster of several involucres; bracts scale-like; involucres tomentose, 1–4 mm long with 5 erect lobes. Flowers 1–3 mm long, cream to yellow, cup-shaped; tepals glabrous, punctate, similar in shape; stamens exserted. Achenes 20-3 mm long (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Species Range

Range Comments
Regional endemic of southwestern MT, east-central ID, and north-central WY.

Observations in Montana Natural Heritage Program Database
Number of Observations: 49

(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)

Stony, calcareous soil of exposed ridges, warm slopes; valleys to montane (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

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Citation for data on this website:
Imperfect Wild Buckwheat — Eriogonum mancum.  Montana Field Guide.  .  Retrieved on , from