Numerical classification and species diversity of Cinnamomum burmannii community in karst hills of Guilin Morphological characteristics and biomass allocation of Cinnamomum burmannii seedlings on the karst hills of Yangshuo County, Guangxi Structure of Cinnamomum burmannii Population in Karst hills of Guilin STUDIES ON THE INTRODUCTION AND CHEMICAL CONSTITUENTS OF ESSENTIAL OIL OF CINNAMOMUM BURMANNII F. HEYNEANUM A Study on Infraspecific Types of Chemical Character of Cinnamomum burmannii Studies on Mei Pian Tree (Cinnamomum burmannii Physiological Type) as a New Resource of Natural d-Borneol