Dioscorea pseudonitens Prain & Burkill (Dioscoreaceae) is conspecific with Dioscorea nitens Prain & Burkill
Keywords:Dioscorea, taxonomy, morphology, Thailand, China (Yunnan), D. sect. Shannicorea
New data generated from overlooked and newly collected specimens demonstrate that there is continuous variation between D. pseudonitens of Thailand and D. nitens of China (Yunnan). A revised key, illustrations and conservation status assessment are provided. The need for population-based research on species limits in D. sect Shannicorea is highlighted.