Abstract: Singchia Z.J. Liu & L.J. Chen, a new orchid genus, is established based on the new species S. malipoensis Z.J. Liu & L.J. Chen found in Southeast Yunnan of China. The new genus is related to Pteroceras, from which it differs by having a lip with its basal margins immovably adnate to the lower part of the pendent columnfoot, a thin-walled spur, and very unequally and deeply split pollinia each with a distinct caudicle. In addition to a discussion on Ascocentrum pusillum, a species of questionable placement, another new genus, Gunnaria S.C. Chen ex Z.J. Liu & L.J. Chen is set up, and a new combination, G. pusilla (Aver.) Z.J. Liu & L.J. Chen, is made in the present paper. This new genus, Gunnaria, differs from its ally Ascocentrum by having a more or less cross-shaped pollinarium, sulcate or split pollinia each with a distinct caudicle attached to a common linear stipe much longer than either pollinia or viscidium, and strongly incurved side-lobes of the lip.

Key words: Singchia Z.J. Liu & L.J. Chen, S. malipoensis Z.J. Liu & L.J. Chen, Gunnaria S.C. Chen ex Z.J. Liu & L.J. Chen, G. pusilla (Aver.) Z.J. Liu & L.J. Chen, new genera, new species, new combination, Yunnan, China.