A revision of Aeschynanthus in Thailand

The species of Aeschynanthus Jack (Gesneriaceae) in Thailand are revised. Twenty species are recognized, a key to the species is given, all names are typified, and detailed descriptions of all species are provided. Conservation assessments are given for all species. Aeschynanthus minutifolius D.J.Middleton is newly described. Micraeschynanthus Ridl. is reduced to synonymy and a new combination is given for its only species: Aeschynanthus dischidioides (Ridl.) D.J.Middleton.