State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China;
Graduate University of Chinese Academy of Sciences, Beijing 100049, China;
Gothenburg Botanical Garden and Department of Plant and Environmental Sciences, University of Gothenburg, 413 19 G(o)teborg, Sweden;
Department of Ecology and Evolutionary Biology, University of Tennessee, Knoxville, TN 37996 USA;
State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China;
