Glabrous except for the inflorescence densely and the flowers sparsely to densely red brown tomentose or sometimes the corolla glabrous. Leaves opposite or scattered; lamina narrowly ovate to ovate, (6—)8—15(—18) by (3-)6-9 cm, truncate to attenuate at the base to a petiole 7-20 mm long, thin, finely undulate at the margin, acuminate and acute at the apex, dull on both sides or darker and slightly lustrous above; venation pinnate with the midrib distinct above and raised below and the main laterals somewhat curvinerved and usually visible. Inflorescences at the nodes, a 15-30-flowered raceme; axis 40-65 mmjong; pedicels l-3.5(-6) mm long. Corolla in mature bud 5-merous, 20-26 (-32) mm long, slender, gradually widened upwards, narrowed to a weak neck, abruptly widened and clavate below the rounded or obtuse apex, red; tube in the open flower 15-24 mm long with the lobes reflexed 2-3 mm higher, hardly curved but split almost to the base on one side. Anther 1.5-2 mm long, obtuse, slightly shorter than the free part of the filament.
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