Trees or shrubs, rarely herbs. Stem with watery juice, erect or climbing. The members of the order are called soapworts because of the fruit of many species containing a saponaceous principle. The flowers are unsymmetrical, racemed, or panicled, the pedicels often changed into tendrils. The order furnishes a variety of dissimilar products
A Manual of Organic Materia Medica and Pharmacognosy, 1917, was written by Lucius E. Sayre, B.S. Ph. M.