Suffruticose, scandent to 2 m. high, glabrous. Stem erect, branched. Leaves straight, asymmetric, pinnate-nerved, lanceolate to elliptic-lanceolate, acute or acuminate, unequal at base with the adaxial side cuneate and the other rounded and decurrent, 5-9 cm. long, 16-40 mm. wide, doubly crenate-serrate, ciliate, mem-branaceous, petiole 2-8 mm. long, stipules deciduous or subpersistent, oblong-ovate, acuminate-setiferous, 8-10 mm. long, scarious. Peduncles terminal and axillary, 4-5 cm. long. Cymes dichotomous, few-to many-flowered, 6-15 cm. in diameter. Bracts deciduous or subpersistent, ovate, obtuse, acute or mucronate, 4-7 mm. long, scarious. Pedicels 4-19 mm. long. Flowers pinkish white. Staminate tepals 4, the outer elliptic-ovate, entire or dentate at apex, 8-15 mm. long, the inner obovate, distinctly shorter. Stamens free, very numerous, anthers oblong, mostly shorter than the filaments, connective produced, apiculate or obtuse. Pistillate bracteoles deciduous, ovate to narrowly obovate, 6 mm. long, entire. Pistillate tepals 5, subequal with the two outer slightly smaller, elliptic, acute, 6-10 mm. long. Styles 3, bifid nearly to base, each main branch with 3-4 short spiral branches, placentae bifid, ovuliferous throughout. Capsule ellipsoid, the largest wing triangular, horizontal or slightly ascending, 15 mm. wide, the other two marginiform.
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