Shrub to 4 m high. Leaves glabrous; lamina lanceolate, lanceolate-elliptic or elliptic, to 14 cm long, to 5 cm wide, cuneate, acute or short-to long-acuminate, herbaceous to membranous; secondary veins 6–12 each side of midrib; tertiary venation obscure. Flowers 11–18 mm long, 18–30 mm diam.; pedicels 6–13 mm long. Sepals lanceolate to lanceolate-ovate, 1.5–3.2 mm long. Corolla salverform, cream; tube 9–17 mm long, 1.7–2.5 mm diam.; lobes lanceolate-obovate to obovate, 5–15 mm long, 2.7–6.5 mm wide. Stamen filaments 1.5–2 mm long. Fruit 20–38 mm long. Seed 4–6 mm long.
Shrubs or small trees 1-14 m tall. Branchlets pubescent to glabrous. Petiole 0.3-2 cm; leaf blade elliptic or narrowly so, 3-25 X 1-10 cm, sometimes pubescent abaxially, apex acuminate, caudate, or obtuse; lateral veins 4-16 pairs. Cymes 3-16 cm. Flower buds with a broadly ovate head, apex rounded or obtuse. Corolla white, tube 0.8-2.2 cm; lobes obliquely oblong, falcate, 0.6-1.9 cm. Stamens inserted at or above middle of corolla tube. Ovary glabrous. Follicles obliquely ellipsoid, 1.2-7 X 0.5-3 cm, apex beaked or rounded. Fl. May-Jul, fr. Jul-Nov.