A large tree. Leaves obovate-oblong or lanceolate, rounded at the apex, gradually tapering at the base, 24–30 in. long, 4–4 3/4 in. long, coriaceous, rigid, glabrous, quite entire; nerves 17–19 on each side; auricles beneath prominent, nearly semi-orbicular, revolute, not connate between the bases of the petioles; petiole 2 1/2 in. long, somewhat trigonous. Cymes dichotomous in a terminal panicle; branches irregularly compressed; pedicels 2 lin. long, articulate. Sepals suborbicular, coriaceous, with papery margins, outer 4 lin. long, inner slightly shorter. Corolla fleshy, white; tube cylindrical, 13 lin. long; lobes 10–12, narrowly oblong, strongly contorted, about 6 lin. long, 2 lin. wide. Stamens 10; filaments connate into a ring about 1 1/2 lin. high; anthers about 3 1/2 lin. long. Ovary ovoid or ovoid-oblong; style thick, 7 1/2 lin. long; stigma ovoid-oblong, 2 lin. long, 1 1/2 lin. thick.