Pollination ecology of rare and endangered species Kmeria septentrionalis Comparative Study on Community Natural Recovery of Kmeria septentrionalis Dandy (Magnoliaceae) after 5 Years Floral Organogenesis of Kmeria septentrionalis(Magnoliaceae) A STUDY OF POLLEN WALL ULTRASTRUCTURE OF KMERIA SEPTENTRIONALIS Extraction and analysis of volatile constituents from testa of rare and endangered plant Kmeria septentrionalis Research on the niche of dominant species population of endangered plants Kmeria septentrionalis community The Characters of Kmeria septentrionalis Community in Mulun, Huanjiang of Guangxi The Floral Syndrome and Its Pollination Adaptability in Kmeria septentrionalis (Magnoliaceae)