Glabrous. Leaves in whorls of 4-6; lamina ovate, c. 14 cm long, c. 6 cm wide, shortly cuneate at the base to a petiole 15-20 mm long, shortly attenuate and acute at the apex, slightly lustrous above, dull below; venation pinnate with the midrib prominent below, otherwise obscure. Inflorescences at the nodes and probably along the epicortical runners, pedunculate c. 6-rayed umbels of triads with all flowers pedicellate; peduncle 3-4 mm long; rays 1.5-2 mm long; pedicels c. 1 mm long or sometimes those of the central flowers shorter. Corolla in mature bud 4-merous, c. 33 mm long, inflated in the middle, contracted near the apex and acute, brownish below and dirty yellow grading to green above. Anther c. 3 mm long, about twice as long as the free part of the filament.
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