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Montana Field Guide

Montana Field Guides

Macoun's Bindweed - Calystegia macounii

Global Rank: G5
State Rank: SNR

Agency Status
MNPS Threat Rank:

External Links

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).

Species Range

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

Summary of Observations Submitted for Montana
Number of Observations: 2

(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)

Disturbed habitats.

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Citation for data on this website:
Macoun's Bindweed — Calystegia macounii.  Montana Field Guide.  .  Retrieved on , from