THAYA JENJITTIKULSAROJ RUCHISANSAKUNMahidol University2020-11-182020-11-182020-10-19Phytotaxa. Vol.464, No.3 (2020), 257-26011793163117931552-s2.0-85094588728https://repository.li.mahidol.ac.th/handle/20.500.14594/59804© 2020 Magnolia Press. Stephania kaweesakii (Menispermaceae), a new tuberous species from Thailand, is described and illustrated. It is morphologically similar to S. pierrei but can be distinguished by having thick-scaled (vs. smooth and papery) tuber bark, male flowers with 3 or 4 petals (vs. absence of petals).Mahidol UniversityAgricultural and Biological SciencesArticleSCOPUS10.11646/phytotaxa.464.3.9