Hemipilia zhuxiensis (Orchideae, Orchidaceae), a new species from Hubei Province, China

<i>Hemipiliazhuxiensis</i> (Orchidaceae), is a new species discovered in the Shibali Long Canyon National Nature Reserve, Zhuxi County, Hubei Province, China. It is morphologically similar to <i>Hemipiliahenryi</i> and <i>Hemipiliacrassicalcarata</i>, but differs in having an oblong, simple labellum with a slightly involute margin, an upcurved apex, and a spur shorter than the ovary. Molecular phylogenetic analyses, using nuclear (nrITS) and plastid (combined <i>matK</i>, <i>psaB</i>, <i>psbA-trnH</i>, <i>rbcL</i> and <i>trnL-F</i>) DNA sequences, confirm that <i>H.zhuxiensis</i> is closely related to <i>Hemipiliahenryi</i> and <i>Hemipiliacrassicalcarata</i>, supporting its recognition as a new species in the H.sectionHemipilia as defined by Tang et al. (2015).