Glabrous except for the young shoots, inflorescences and flowers white to pale grey tomentose, soon glabrescent other than the ovary. Leaves scattered or rarely opposite; lamina ovate or elliptic, 7-20 by 5-12 cm, thick, cuneate to slightly cordate at the base to a petiole 2-12 mm long, obtuse or rounded at the apex, dull on both sides; venation pinnate with the midrib and the incurved main laterals distinct on both sides and more prominent below. Inflorescences at the nodes, a many-flowered raceme; axis 30-60 mm long; pedicels 1-4 mm long. Corolla in mature bud 5-merous, (52-)70-l 10 mm long, gradually widened upwards, thickened on each petal just below the neck, weakly clavate, sometimes angular, truncate or obtuse at the apex, mostly yellow or yellowish green, becoming orange or rarely red with age; tube in the open flower 35-55 mm long with the lobes reflexed 6-10 mm higher, curved. Anther 5-9 mm long, obtuse, slightly shorter than the free part of the filament.
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