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Montana Field Guide

Montana Field Guides

Wild Cucumber - Echinocystis lobata

Native Species

Global Rank: G5
State Rank: S4
* (see State Rank Reason below)

Agency Status
MNPS Threat Rank:
C-value: 5

External Links

State Rank Reason (see State Rank above)
Echinocystis lobata occurs sporadically in the western U.S. (FNA 2015). In Montana it has been collected in the southwestern, south-central, and southeastern areas along creek bottoms and canals, on fences, in gardens, and along roads. Almost half of the known collections were documented from 1888 to 1965 with very imprecise locations. It appears to be tolerant of some disturbance though current population and location data is needed.
General Description
Scabrous, monoecious annual. Leaves 5–15 cm long, with toothed margins. Flowers greenish-white, 6–10 mm across; male flowers racemose; female flowers solitary; corolla 6-lobed, 3–6 mm long with spreading lobes; stamens 3; style with a lobed stigma. Fruit ovoid, 3–5 cm long, inflated, prickly (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Range Comments
SK to NL south to TX and FL (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Observations in Montana Natural Heritage Program Database
Number of Observations: 19

(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)


  • Literature Cited AboveLegend:   View Online Publication
    • Flora of North America Editorial Committee, eds. 2015. Flora of North America north of Mexico, Volume 6. Magnoliophyta: Cucurbitaceae to Droseraceae. Oxford University Press, Inc. New York.
    • Lesica, P., M. T. Lavin, and P. F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.
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Citation for data on this website:
Wild Cucumber — Echinocystis lobata.  Montana Field Guide.  .  Retrieved on , from