New Combination and Two Synonyms of Indocalamus Nakai (Poaceae: Bambusoideae) from China Based on Morphological Characters and Phylogenetic Evidence

Based on several evidences from morphology, micromorphology on the abaxial leaf epidermis, and phylogenetic analysis by using complete chloroplast genome data, a new combination and two new synonyms were reported in the genus Indocalamus Nakai. Indocalamus cordatus T. H. Wen et Y. Zou was synonymized with I. tessellatus (Munro) P. C. Keng, and I. multinerus (W. T. Lin et Z. M. Wu) W. T. Lin was synonymized with I. chebalingensis W. T. Lin. As a new combination, I. mollis (H. R. Zhao et Y. L. Yang) L. Q. Gao, W. G. Zhang et G. Y. Yang, was created and supplementally described. In addition, the lectotype of I. chebalingensis was designated from several syntypes.