Abstract:Based on field observation and specimen examination, two little known orchids, Dendrobium transparens Wall. ex Lindl. and Neottia alternifolia (King & Pantl.) Szlach., are documented first time in field in China. Dendrobium transparens is similar to Dendrobium aphyllum (Roxb.) C. E. Fischer, but it is easily distinguished from the latter by its lip having a large deep purplish red patch along its middle and pubescent adaxially; Neottia alternifolia (King & Pantl.) Szlach. is quite different from other species of Neottia Guettard by having two alternate leaves.