Four new orchid species from the Lengguru fold belt, West Papua, Indonesia Juswara, L. Schuiteman, A. /Droissart, Vincent Bulbophyllum Dendrobium Kaimana Regency Kumawa Forest Reserve limestone karst Orchidaceae Taeniophyllum Triton Bay Bulbophyllum leucoglossum, Dendrobium centrosepalum, Dendrobium taeniocaule, and Taeniophyllum pyriforme are here described as new species, based on herbarium specimens collected from the Lengguru fold-and-thrust belt in the West Papua Bird's neck, Indonesian New Guinea. All four novelties were found growing in submontane forest (elevation > 1000 m a.s.l.) on limestone karst. Information concerning the distribution and habitat for these taxa is provided along with diagnostic features, line drawings, high resolution photographs, and a map of collecting localities. More field studies are required to find additional populations of these new species, in order to better characterize their habitat, ecology and conservation status. 2016 text https://www.documentation.ird.fr/hor/fdi:010066667 fdi:010066667 Juswara L., Schuiteman A., Droissart Vincent. Four new orchid species from the Lengguru fold belt, West Papua, Indonesia. 2016, 61, 47-59 EN PAPOUASIE NOUVELLE GUINEE