A Diterpene Endoperoxide from Microtoena insuavis (Hance) Prain ex Dunn A New Stilbene from Cercis chinensis Bunge Antimicrobial Isoflavans from Astragalus membranaceus (Fisch.) Bunge A new phenylethanoid glycoside from roots of Incarvillea compacta Isoflavones from Astragalus membranaceus Non-coding RNA for ZM401, a Pollen-specific Gene of Zea mays Studies on the Chemical Constituents of Rhododendron capitatum Maxim