Glabrous or the inflorescence and flowers sparsely brown-tomentose. Leaves opposite; lamina elliptic to ovate, 6-20 by 3-8 cm, truncate to cordate at the base, sessile, usually weakly acuminate and acute at the apex, grey and often glossy above, dull brown below; venation pinnate with the midrib prominent towards the base and the main laterals visible on both sides. Inflorescencess at the nodes; a subsessile 6-flowered head of 2 sessile triads on a short or obscure peduncle 0.5-1.5(-2.5) mm long. Corolla in mature bud 5-merous, (12-) 17-23 mm long, slender, very weakly clavate and acute or obtuse at the apex, yellow to red, sometimes paler below. Anther (l-)2.5-4 mm long, usually about equal to the free part of the filament.