Primulina heterochroa (Gesneriaceae), a new species from a tropical limestone area in Guangxi, China

摘要

Primulina heterochroa (Gesneriaceae) is described and illustrated here. This new species morphologically resembles P. pungentisepala and P. minutimaculata, but it is easily distinguished from congeners by some qualitative and quantitative characters in leaf, bract, calyx, indumentum, corolla and inflorescence. The conservation status of P. heterochroa is assessed as Critically Endangered (CR) according to IUCN Red List categories and criteria.