Coelogyne tsii and Dendrobium menglaensis (Orchidaceae), two new species from Yunnan, China

Two new species of Orchidaceae, Coelogyne tsii X.H. Jin & H. Li and Dendrobium menglaensis X.H. Jin & H. Li, are described and illustrated from Yunnan, China. Coelogyne tsii is morphologically reminiscent of C. prolifera, from which it differs in having red and secund flowers, and a midlobe one third of the total length of the lip. Dendrobium menglanensis is similar to D. moschatum, but can be easily distinguished by its complanate stem, 1-flowered inflorescence, smaller flowers and white anther cap.