This section is from the book "Handbook Of Hardy Trees, Shrubs, And Herbaceous Plants", by W. Botting Hemsley. Also available from Amazon: Handbook of hardy trees, shrubs, and herbaceous plants.
Shrubby climbers with pinnate deciduous often tendrilled leaves and handsome campanulate flowers. Calyx entire or obscurely toothed. Corolla slightly irregular. Fertile stamens 4, with a rudiment of a fifth. Capsule 2-celled, 2-valved, compressed, the partition parallel with the valves. This genus commemorates the Abbe Bignon, librarian to Louis XIV.
1. B. capreolata. - A very handsome glabrous climber with unijugate leaves terminating in a branched tendril, and often provided with two very small leaflets near the base of the petiole. Peduncles clustered, one-flowered. Flowers large, orange. A native of North America from Virginia southwards, and only suitable for warm sheltered situations.