The orchid genus Odontochilus comprises of about 40 known species. Most of them are small terrestrial plants, usually found in humid evergreen broadleaved forests of tropical Asia.
The new species is named after Putao, the northernmost town of Myanmar because the species was discovered in a vast area of undisturbed mountain forest next to it.
For the experts: Odontochilus putaoensis, a new species of Orchidaceae, is described and illustrated from Putao Township, Kachin State, Myanmar. Odontochilus putaoensis is close to O. duplex, but can be easily distinguished from the latter by having a light yellow lip, a bisaccate hypochile with a small, erect, blade-like and emarginate callus within each sac, a mesochile with a pair of dentate-pectinate flanges and a bilobed epichile with a pair of widely diverging lobes that are erect and concave. An identification key to the Southeast Asian species of Odontochilus and colour photographs of O. putaoensis are provided. A preliminary conservation assessment according to the IUCN Red List Categories and Criteria is given for the new species.