A dioecious Asiatic vine with cordate-ovate lvs, axillary yellow fls 1.5-2.5 cm, and with strongly ribbed and cross-ribbed ellipsoid fr 5 cm, occasionally escapes in s. Can. and n. N. Engl.

Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.

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