Glabrous. Leaves opposite; lamina elliptic to almost orbicular, 8-13 by 4.5-9 cm, cuneate at the base to a winged petiole 25-40 mm long, rounded at the apex, slightly glossy or dull above, dull below; venation pinnate with the midrib prominent below and the main laterals faintly visible on both sides. Inflorescencess at the nodes, a raceme of 10-14 opposite pairs of triads, these often in loose whorls of 4, with the central flower sessile and the lateral flowers pedicellate; axis 35-70 mm long; peduncles of the triads 5-10 mmlong, secund; pedicels of lateral flowers 1.5-3 mm long. Corolla in mature bud 6-merous, 30-50 mm long, slender, shortly rounded at apex, red below and yellow above; petals in the open flower coherent as a slender tube in the lower 2-15 mm. Anther 4-8 mm long, acute, about two or three times as long as the free part of the filament.
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