Bulbophyllum thaithongiae (Orchidaceae), a new species from Thailand

During an exploration for the diversity of orchids in Thong Pha Phum National Park, Kanchanaburi Province, a new species of Bulbophyllum in section Racemosae was discovered. It is described here as Bulbophyllum thaithongiae. This new species can be characterized by having sub-densely arranged inflorescences, short floral bracts which never completely hide the flowers and long papillae up to 0.53 mm on the labellum which are clearly visible by naked eye. A detailed description and illustrations are provided together with notes on taxonomy and conservation status.