Taxonomic notes onApostasia nipponicaandCrepidium cordilabium(Orchidaceae), two species newly recorded from Hong Kong

Abstract Apostasia nipponica and Crepidium cordilabium are newly added to the orchid flora of Hong Kong and their taxonomy is reviewed. A detailed description and line drawing are provided for both species, as are notes on flowering phenology and conservation status. Following careful examination of type material and other authentic specimens from throughout their range, as well as of photographs of plants in the wild, A. nipponica is removed from the synonymy of A. wallichii and reinstated as a valid species, under which A. ramifera and A. shenzhenica are newly synonymized. Additionally, Crepidium cordilabium , which was originally described from Taiwan as a natural hybrid between C. matsudae and Dienia ophrydis , is treated here as a distinct species belonging to the section Hololobus and sub‐section Maximowiczianae .