Herbs, scandent to climbing; stems 8-ribbed, scabrous. Leaves in whorls of 4, subsessile; blade drying papery, lanceolate to lanceolate-elliptic, 4-7 × 1.2-2 cm, both surfaces scaberulous and sometimes hirtellous, base acute to obtuse, margins entire, apex acute to acuminate; principal veins 3 or 5, palmate. Inflorescences thyrsoid, paniculate, with terminal and axillary, many-flowered cymes, usually much longer than subtending leaves; axes hirtellous, scaberulous to glabrescent; bracts lanceolate or subovate, 2-5 mm; pedicels 2-5 mm. Ovary subglabrous to hirtellous. Corolla pale yellow, somewhat funnel-shaped, glabrous or hirtellous outside, fused basal part ca. 0.5 mm; lobes 5, ovate to lanceolate, 1-1.2 mm, obtuse to acute. Mericarp berry unknown. Fl. Sep.
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