Synonyms: Apaturia chinensis; Apaturia lindleyana; Apaturia montana; Apaturia senilis; Apaturia smithiana; Epipactis scariosa; Eulophia hirsuta; Eulophia holtzei; Graphorchis holtzii; Graphorkis holtzei; Neottia pantanis (homotypic); Pachychilus chinensis; Pachychilus montanus; Pachychilus pantanus; Pachychilus pubescens (homotypic); Pachychilus senile; Pachychilus senilis; Pachychilus smithianus; Pachychilus speciosus; Pachystoma affine; Pachystoma brevilabium; Pachystoma chinense; Pachystoma chinense formosanum; Pachystoma chinense var. formosanum; Pachystoma chinensis; Pachystoma edgworthii; Pachystoma formosanum; Pachystoma fortunei; Pachystoma gracile; Pachystoma hirsuta; Pachystoma holtzei; Pachystoma josephi; Pachystoma lindleyanum; Pachystoma ludaoense; Pachystoma montanum; Pachystoma pantanum; Pachystoma papuanum; Pachystoma parvifolium; Pachystoma pubescens gracile; Pachystoma pubescens var. gracile; Pachystoma senile; Pachystoma smithianum; Pachystoma speciosum; Pachystoma wightii