Observation of above-ground part of Cynanchum paniculatum by scanning electron microscope COMPARATIVE STUDY ON MORPHOLOGY OF ARTEMISIA PLANTS FROM NORTHEASTERN CHINA I. MORPHOLOGY OF SEED COAT Correlations between physical characters of wheat leaf hairs in SEM and the biological parameters of grain aphid Stiobion avenae Pharmacognostic Studies on Chinese Crude Drugs"Dunyebixie"and "Xibixie" Microstructure characteristics of seed from 11 plants of Artemisia L. in China Pollen Morphology and Its Taxonomy of Twenty Six Species in Rhododendron Behind the diversity: Ontogenies of radiate, disciform, and discoid capitula of Chrysanthemum and its allies Pollen Morphology of Eggplant and Study on Its Taxonomy SEM EXAMINATION ON SEED COAT OF TRICHOSANTHES AND ITS TAXONOMIC SIGNIFICANCE Macro- and Micro-Structural Changes in Bamboo after Attack by Various Fungi