Tree, up to 20 m high. Leaves elliptic-oblong to oblanceolate, coriaceous, ca 7-11-nerved, 6½-14 by 2.8-6½ cm, with rounded apex, obtuse to rounded base, and nearly entire to dentate, mainly in the upper part of the leaf, margin. Petiole 1½-3 cm long, with linear, 1 mm broad, caducous wings. Inflorescence terminal on the leaf-bearing branches or lateral on the older branches in the axil of a leaf-scar; raceme 2-6-flowered, sometimes with one lateral branch, up to 5 cm long. Flowers ca 6 cm diam., on a 3-6 cm long pedicel. Sepals 4-6, usually 5, ca 13-16 by 8-12 mm. Petals as many as sepals, white, ca 30 by 14 mm. Stamens ca 120-160, the outer ones slightly longer, 9 mm, than the inner ones, 7 mm. Carpels 4-6, usually 5, ca 7 by 2½ mm, with 5-8 mm long styles, each with 8-10 ovules. Fruit unknown.