STUDY ON LEAF EPIDERMAL HAIRS OF THE GENUS POTENTILLA IN CHINA Epidermal Characteristics of Seriphidium (Compositae) Leaves in China Study on the Anatomical Structures of Rhododendron protistum var. giganteum with an Extremely Small Population Observation of Leaf Epidermis and Its Hair of Begonia from Yunnan Leaf epidermal and epidermal hair micromorphology of 18 species(1 forma)Salvia species STUDIES ON THE COMPARATIVE MORPHOLOGY AND ANATOMY OF ARTEMISIA LINN. IN CHINA (Ⅰ) THE STRUCTURE OF LEAF EPIDERMIS Studies on Epidermal Hairs of Gossypium