Glabrous except for the young parts, inflorescence, ovary and usually the corolla white-to red-brown-tomentose, the leaves usually soon glabrescent; very rarely completely glabrous. Leaves scattered or subopposite; lamina narrowly to broadly ovate or obovate, (4-)10-15 by (1.5-)3-5(-8) cm, attenuate to cuneate at the base to a petiole usually 10-20 mm long, mostly obtuse or rounded (sometimes acute) at the apex, darker and glossy above or dull on both sides; venation pinnate with the midrib and the main laterals visible above and often more distinct below. Inflorescencess at the nodes, a (2-) 5-10(-16)-fiowered raceme; axis 10-25(-30) mm long; pedicels (l-)2-4(-5) mm long. Corolla in mature bud 5-merous, (28-)30-48 mm long, uniformly widened upwards, slightly narrowed to a neck and usually weakly clavate and acute at the apex, various shades of yellow to red and often differently coloured below and above; tube in the open flower 18-30 mm long with the lobes reflexed 4-6 mm higher, curved, more deeply split on one side. Anther 3-5 mm long, obtuse, 0.5-1 times as long as the free part of the filament. Fig. 23e.
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