Characters of Leaf Epidermis of Begonia (Begoniaceae) from China and Their Taxonomic Significance
ZHANG Rong-Mei , , CHEN Wen-Hong , SHUI Yu-Min, CHEN Shao-Yu , WEI Zhi-Dan ,
Plant Diversity . 2008, (6): 665 -678 .  DOI: 10.3724 SP.J.1143.2008.08007