Cyne quadriangula Danser

Glabrous. Stem internodes quadrangular when young. Leaves opposite; lamina oblong to elliptic, 8-14 by 3.5-5 cm, truncate to shortly cuneate at the base to a petiole 6-14 mm long, shortly acuminate and obtuse at the apex, dull on both sides; venation pinnate, the midrib and main laterals distinct. Inflorescences few in hollows at the nodes, arising below a periderm layer which is usually shed. Corolla chocolate-coloured. Other characters unknown.