Comparative anatomy of oil cells and mucilage cells in the leaves of the Lauraceae in China DEVELOPMENTAL ULTRASTRUCTURE OF OIL AND MUCILAGE CELLS IN CINNAMOMUM LONGEPANICULATUM Anatomical Studies on the Distribution and Development of Mucilage Cells in Anredera cordifolia Anatomical studies on the development of oil and mucilagecells in Cinnamomum longepaniculatum