Deciduous, glabrous twiner to 10 m; lvs petiolate, lance-ovate to oblong, 5-10 cm; fls brown-purple, 2-2.5 cm wide, the narrowly oblong cor-lobes densely villous on the upper side especially toward the margins and base, and with a central, densely and shortly papillate- hairy strip toward the base; principal lobes of the corona slender, almost thread-like, 4-8 mm; anthers villous on the back; frs 10-15 cm; 2n=24. Native of s. Eur., rarely escaped from cult. in our range.

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

©The New York Botanical Garden. All rights reserved. Used by permission.