Primulina spiradiclioides (Gesneriaceae), a New Species from Limestone Areas in Guangxi, China

Primulina spiradiclioides Z.B. Xin & F. Wen (Gesneriaceae), a new species from limestone areas in Guangxi, China, is described and illustrated. It resembles P. curvituba, but can be easily distinguished from it by several characters, especially by its straight corolla tube. We found only one population with fewer than 200 mature individuals at the type locality.