Woody,
twining liana with white latex; leaves opposite, simple, elliptic,
base cordate to subsagittate, apex with prominent drip-tip; flower
buds with three distinct zones, the corolla tube covering the
ovary region (basal), the remainder of the corolla tube (middle),
and the corolla lobes (apical); fruiting dry follicles narrow,
periodically enlarged around the seeds; seeds plumose.
