Branchlets sparsely puberulent to glabrous. Leaves opposite; Inflorescence an axillary cyme, 6.8-8 cm long, puberulent on upper parts; Sepals ovate, 1.5-2.4 by 1.1-1.5 mm, 1.3-1.7 times as long as wide, apex acute to acuminate, puberulent. Stamens inserted at c. 1.8 mm from corolla base which is c. 0.5 of tube length; Ovary 1-1.1 mm long; Fruit linear, 14.7-15.1 cm by 8-9 mm. Seeds 11.2-14.2 by 1.9-2.2 mm;
Asia-Tropical: Malaya (Peninsular Malaysia present), southern Thailand present
Southern Thailand; in Malesia: Peninsular Malaysia.
It is closely related to P. alboflavescens but easily distinguished by its ovoid buds which are usually somewhat papillose outside.