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The application of DNA molecular markers in conservation of the rare and endangered medicinal plants Seed germinating characteristics of endangered plant Magnolia officinalis AN EFFECTIVE IN VITRO PROTOCOL FOR INCREASING MYCORRHIZAL FORMATION RATE OF CATHAYA ARGROPHYLLA Potential Effects of Climate Change on the Distribution of Six Desert Plants in China Gas Exchange and Water Use Efficiency of Adenophora lobophylla (Campanulaceae) at Different Altitudes on the East Boundary of the Qing- Zang Plateau Pollination Biology in Cimicifuga nanchuanensis, an Endangered Species (Ranunculaceae) Analysis of reproductive ecological factors of endangered Rhodiola gannanica. The Diversity of Plant Communities with Endangered Plant,Berchemiella wilsonii var. pubipetiolata Research Advances about Tissue Culture of Endangered Plants in China Preliminary Study of the Evaluation System of Precious and Endangered Wild Officinal Plants in Changbai Mountains Analysis on resource situation of rare and endangered characteristic medicinal species in Chinese She nationality Diplandrorchis sinica,a Newly Recorded Rare and Endangered Species of Orchidaceae from Loess Plateau,China material resources for sustainable development