P. TraipermT. BoonkerdP. ChantaranothaiD. A. SimpsonMahidol UniversityChulalongkorn UniversityKhon Kaen UniversityRoyal Botanic Gardens, Kew2018-06-112018-06-112012-03-01Kew Bulletin. Vol.67, No.1 (2012), 75-79007559742-s2.0-84862201820https://repository.li.mahidol.ac.th/handle/123456789/13488Summary: During a revision of the genus Ischaemum for the Flora of Thailand, a new species, Ischaemum thomasii, was discovered. A description and illustration are presented here. Two taxa are reduced to synonymy: Ischaemum barbatum Retz. var. glaberrimum Bor and I. tenuifolium A. Camus are placed under I. barbatum Retz. and Andropogon burmanicus Bor, respectively. A further four names are lectotypified: I. aristatum L. subsp. imberbe Hack. var. imbricatum Hack., I. aristatum L. var. arfakense Rendle, I. magnum Rendle and I. macrurum Stapf ex Ridl. © 2012 The Board of Trustees of the Royal Botanic Gardens, Kew.Mahidol UniversityAgricultural and Biological SciencesArticleSCOPUS10.1007/s12225-012-9324-1