Coefficient of Conservatism:
Coefficient of Wetness:
Sometimes cultivated and escaped, especially in the southern United States. Collected once in Michigan, on “banks of marshes” at River Rouge, Wayne Co. (O. A. Farwell 9320 in 1932, MICH, BLH).
This is a rather slender herbaceous vine climbing by tendrils, with alternate leaves usually twice-ternately compound, the leaflets ± coarsely toothed. The flowers are small (barely 5 mm), usually unisexual, and white; the fruit is an inflated, papery capsule.