A new species of Gesneriaceae from Honghe County, Southeastern Yunnan, China, Tremacron hongheense W.H. Chen & Y.M. Shui, is described and illustrated. The new species is similar to Tremacron forrestii Craib, but differs by its leaf blade adaxially sparsely long setose (vs. densely white appressed pubescent and sparsely rusty-brown villous), corolla tube outside short white glandular (vs. nearly glabrous), corolla lobes red and thickening at apex, especially adaxial lip (vs. yellow and not thickening), stamens 16-18cm long (vs. 0.4-1.2cm long), staminode 0.5-1.4cm long (vs. 0.2-0.4cm long).
(Transferred a short time later to Oreocharis, see relevant paper in the library)