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Montana Field Guide

Montana Field Guides

Macoun's Bindweed - Calystegia macounii

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Undetermined Origin

Global Rank: G5
State Rank: SNR

Agency Status


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General Description
Plants erect with sparsely twining stems, finely pubescent. Petioles up to 40 mm long. Leaves 2-6 cm long, 1-5 cm wide, ovate, bascally cordate to subsagittate. Flowers solitary, frequently 4 or less per plant, arising from lower axils on peduncles 3-5 cm long. Sepals 10-12 mm long, subequal, elliptic to ovate, acute to mucronate, transparent at least on margins. Corollas funnelform, 4-5 cm, white. Stamens 25-28 mm long, glandular pubescent basally. Fruits capsular, globose to ovoid (adapted from D.F. Austin, 1986, in Flora of the Great Plains).

Range Comments
Most common in NE and KS, but extending to AZ, TX, WY, MO, and MI (Kartesz in prep. 2012).

Observations in Montana Natural Heritage Program Database
Number of Observations: 2

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Relative Density



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

Disturbed habitats.

  • Additional ReferencesLegend:   View Online Publication
    Do you know of a citation we're missing?
    • Lesica, P., M.T. Lavin, and P.F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.
    • Lesica, P., M.T. Lavin, and P.F. Stickney. 2022. Manual of Montana Vascular Plants, Second Edition. Fort Worth, TX: BRIT Press. viii + 779 p.
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Citation for data on this website:
Macoun's Bindweed — Calystegia macounii.  Montana Field Guide.  .  Retrieved on , from