The Microcharacteristics of Leaf Surface and Its Systematic Implication in Lysimachia Seed Micromorphological Characteristics of Eurya and Their Systematic Implications Pollen morphology of Rhododendron subgen. Tsutsusi and its systematic implications Floral organogenesis of three species of Jatropha (Euphorbiaceae) A New Type of Embryo Sac in Cardiopteris and Its Systematic Implication Floral organogenesis of Handeliodendron bodinieri (Sapindaceae) and its systematic implications Microsporogenesis of Cycas and its systematic implications Seed Morphology in Some Chinese Species of Aconitum (Ranunculaceae) and Its Systematic Implications Pollen Morphology of Parnassia L. (Parnassiaceae) and Its Systematic Implications Sporogenesis,Gametogenesis in Zephyranthes candida and Their Systematic Significances MORPHOLOGICAL CHARCTERS OF THE GENUS DIPLOPANAX HAND.-MAZZ. AND IT‘S SYSTEMATIC IMPLICATION