Abstract
A new species of Bignoniaceae, Stereospermum binhchauensis, recently discovered in the Binh Chau - Phuoc Buu Nature Reserve of southern Viet Nam, is described and illustrated. Stereospermum binhchauensis is morphologically similar to S. neuranthum Kurz, but differs in having a longer inflorescence, 30-45 cm long and a yellowish purple, pubescent, longer corolla, 4-5 cm long. A key to the species of Stereospermum in Viet Nam is also provided.
