Leaf Epidermal Anatomy of Asclepiadoideae in Northeastern Thailand
Abstract
The leaf epidermal characteristics of 11 species belonging to 11 genera of Asclepiadoideae in Northeastern Thailand. The samples were investigated by leaf epidermal peeling and stained with 1% safranin in water. The generalized epidermal characteristics in species studied are as follows: 1) the shapes of epidermal cell are irregular, polygonal or jigsaw-like, 2) the cell walls are straight and straight to cleft, 3) the types of stomata are paracytic, pentacytic, anomocytic and anisocytic, 4) the types of trichomes are multicellular hair and papillae, 5) the cuticular ormamentation are papillose and straight and 6) the types of inclusions are prismatic crystal and dark red staining inclusions. These characteristics can be used to identify and classified some closely resembled species or genera. In the present study, leaf epidermal anatomy of 4 species of Asclepiadoideae were recorded for the first time.
Keywords : anatomy ; leaf epidermis ; asclepiadoideae
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