A new species of Mahonia Nutt. (Berberidaceae) from China

Mahonia jingxiensis (Berberidaceae), a new species from Guangxi Zhuangzu Autonomous Region, China, is described. Its distinguishing characters and description are given, along with a detailed illustration, color photographs, and taxonomic comments. The species is compared with two similar species (Mahonia shenii W.Y. Chun and M. microphylla Ying et G.R. Long) and a species (M subimbricata W.Y. Chun et F. Chun) from adjacent locality in the genus. The species is distinguishable from the three species in having big entire leaflets, distinct adaxial venation; the lowest pair of leaflets is small (0.5-3.0 x 0.3-1.5 cm) and situated a short distance (ca. 1 cm) from the petiole base; racemes are sometimes branched, middle sepals (3.7-4.1 x 1.9-2.1 mm) and inner sepals (4.1-4.3 x 2.2-2.5 mm) almost equal; berry pyriform, small (3.5-5 mm). Its pollen and seed morphology are reported.