Polygonum jucundum var. rotundum Z. Z. Zhou & Q. Y. Sun, a new variety of Polygonaceae from Anhui, China
ZHOU Zhong-Ze, SUN Qing-Ye, XU Wen-Bin, SHEN Jun, XU LI-Lin, ZHAO Xiu-Xia
J Syst Evol . 2007, (5): 713 -718 .  DOI: 10.1360/aps06205