Cloning and Expression Analysis of GA2ox1 Gene from Camellia lipoensis Cloning and Expression Analysis of Full Length cDNA of Actin Gene from Camellia lipoensis Population Structure and Dynamic Analysis of the Rare and Endangered Plant Camellia longistyla Chemical constituents in roots of Camellia oleifera Cloning and Expression Analysis of Gibberelin 20 Oxidase Gene from Camellia lipoensis Chang et Xu Chemical constituents of saponins from leaves of Camellia euphlebia Chemical constituents of saponins from leaves of Camellia euphlebia A new species of the genus Camellia from Guangdong, China