Petrocosmea getuheensis (Gesneriaceae), a new species from a karst cave in Guizhou Province, China

Petrocosmea getuheensis X.X.Bai, Y.L.Zhou & Xing Chen Li, a new species of Gesneriaceae from a karst cave in Guizhou Province, China, is described and illustrated here, with colour photographs and a preliminary assessment for the IUCN Red List. It morphologically resembles P. minor Hemsl., but this new species can be easily distinguished from that taxon and all other species of Petrocosmea Oliv. by the comprehensive characteristics of its leaf blade thinly papery, lateral veins inconspicuous, abaxial lip lobes narrowly-triangular, apex acute, filaments transparent glandular hairs around the protuberant side, anthers round at apex, pistil apex barely protruding or obvious. One population with about 10,000 mature individuals was found at the type locality. This new taxon was assessed as "Data Deficient" (DD) according to the IUCN standards.