Piper puerense, a new species of Piperaceae from Yunnan, China

Piper puerense (Piperaceae), a new species from Yunnan, China, is here described and illustrated. Detailed morphological comparisons between the newly discovered species and other members of Piper indicate that Piper puerense is similar to Piper curtipedunculum, from which it differs in that stems of the new species are densely pubescent when young, glabrous when mature, leaf blades ovate, 8.5-12 cm x 4.3-6.5 cm, spike peduncle 15 mm long, nearly two times larger than the petiole; female inflorescence 12-18 cm long, male inflorescence 20-30 cm long, fruit obovate in shape, 1.0-1.5 mm in diameter.