Tetracera maingayi Hoogland

Scandent shrub. Leaves oblong, ca 7½-15 by 3-6 cm, with acute, somewhat acuminate apex, coriaceous, shining above. Petiole 10-20 mm. Inflorescence terminal, rather many-flowered (up to 250), basal part often with 1-3 leaves. Flower ca 12-15 mm diam. Sepals 5, the outer two 3½ by 3 mm, the inner three 5 by 3½-4½ mm, scabrid outside. Petals 3. Stamens 2½ mm long; anther-cells manifestly separated at the apex. Carpel 1, with ca 6 ovules. Capsule oblong, 8-12 by 3-4 mm, with a 2-3 mm long beak. Seeds unknown.

Seems to be rare in lowland forests up to 200 m.