A new species, Petrocosmea xingyiensis Y. G. Wei & F. Wen, is described and illustrated from Maling Gorge, Xingyi County, Guizhou Province, China. The new species differs from related species in the genus by its narrowly oblanceolate leaves that are pubescent on both surfaces.
Key words: China, Gesneriaceae, Guizhou, IUCN Red List, Petrocosmea.
Wei, Y. G. & F. Wen. 2009. Petrocosmea xingyiensis (Gesneriaceae), a new species from Guizhou, China. Novon 19(2): 261–262: http://bioone.org/doi/abs/10.3417/2007090