Abies yuanbaoshanensis is a Guangxi endemic and endangered evergreen coniferous arbor,listed in the Red Data Book of plant in P.R.C,being one of the stated-proteced first-class rare and endangered plants. It is distributed only in Yuanbaoshan mountain in northern Guangxi. Abies yuanbaoshanensis having survived the Quaternary Period Ice-age is significant not only to studying the occurrence and evolution of the Chinese ancient south plant flora but also to the ancient climate and geography. Espec...