Glabrous. Stem internodes dilated upwards and 2-edged when young. Leaves opposite, sessile; lamina elliptic, c. 8 cm long, 4-5 cm wide, truncate to shortly cuneate at the base, rounded or obtuse at the apex, slightly glossy above, dull below; venation pinnate, obscure except for the midrib raised below. Inflorescencess few at the nodes, arising through a periderm layer which remains as a basal involucre, a raceme of 1 or 2 pairs of triads with the central flowers sessile and the lateral flowers very shortly pedicellate; axis 2-4 mm long; peduncles of the triads c. 1 mm long; pedicels of the lateral flowers up to 0.5 mm long. Corolla in mature bud 6-merous, c. 30 mm long, pale green below, red above. Other flower characters unknown.
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