An herbaceous, annual vine, climbing and twining, several feet long, sometimes confused with the One-seeded Bur Cucumber. Stems angular and grooved, nearly glabrous and not clammy-hairy, but sometimes hairy at tin- nodes. Leaves thin, roughish on both sides, heart-shaped at the base, with five (varying from three to seven) triangular-lanceolate, sharp-pointed lobes with deep sinuses between them. Flowers greenish white, the stami-nate flowers in narrow, compound racemes; the pistillate flowers solitary or sometimes two together; lobes of the corolla five to six, narrow and sharp pointed. Fruit a small, fleshy pod (pepo), dry when mature, armed with slender spines; inner part fibrous-netted, usually two-celled with two flat seeds in each cavity; ovoid in shape, 11/2 to2 inches long, green, and opening at the apex when mature.
Figure XXXV Wild Balsam Apple; Wild Cucumber (Micrampelis lobata (Michaux) Greene)
In rich, moist or wet soil in thickets or woods along streams or rivers, New Brunswick to Ontario, Manitoba, Montana, south to Virginia, Kentucky, Texas and Kansas. Flowering from July to September. Frequent in cultivation and perhaps largely introduced or escaped in the northeast.
Memoir 15 N. Y. State Museum
Wild Balsam Apple; Wild Cucumber - Micrampelis lobata