Leaf epidermal features of Rhododendron (Ericaceae)
from China and their systematic significance
WANG Yu-Guo, LI Guang-Zhao, ZHANG Wen-Ju, YOU Jia, CHEN Jia-Kuan,
J Syst Evol . 2007, (1): 1 -20 .  DOI: 10.1360/aps06106