A new combination and a new synonym of Gesneriaceae in China.

Didymocarpussubpalmatinervis W.T.Wang was shown to be conspecific with Petrocodonlithophilus Y.M.Shui, W.H.Chen & Mich.Möller, by checking original literature, examining specimens, tracing specimen collecting history, and conducting field surveys. The results show morphological characteristics and geographical distribution overlaps between these two species. The transfer of Didymocarpussubpalmatinervis to Petrocodon as a new combination with Petrocodonsubpalmatinervis (W.T.Wang) F.Wen & Z.L.Li is proposed here, and P.lithophilus is synonymized with P.subpalmatinervis . Color photographs and essential information are also provided, including a detailed comparison of description, distribution, habitat, and the proposed IUCN conservation status.
Competing Interests: The authors have declared that no competing interests exist.
(Zheng-Long Li, Zhang-Jie Huang, Da-Wei Chen, Xin Hong, Fang Wen.)