กายวิภาคศาสตร์พืชวงศ์ลีลาวดี (Apocynaceae) บางชนิดของประเทศไทย (Thai)

Anatomy of some Apocynaceae in Thailand. (English)

The comparative anatomy of 5 subfamilies, 29 genera and 32 species of Apocynaceae in Thailand was studied using epidermal peeling and cross sections of the leaf blade, margins, midrib and branches. The investigations showed that anatomical characteristics, such as cuticles striate, papillose or smooth could be used for specific identification. The epidermal cells are polygonal or jigsaw-like in shape, cell walls are straight or cleft. The types of stomata are paracytic, cyclocytic, anisocytic and anomocytic, typical stomata or sunken stomata. The shapes of the margin are rounded-curved, slender, rounded subspherical, acuminate straight, slender curved, rounded straight and acuminate curved in outline. The adaxial side of midribs are subspherical, straight, curved, concave, or U-shaped and the abaxial side is U-shaped, V-shaped or straight. The shape of vascular bundles in midrib are U-shaped, V-shaped and three groups. The leaf blade and branch are with or without of unicellular trichome, multicellular trichome or domatia. The idiobast of leaf and branch are prismatic crystal, druse crystal, sand crystal, laticifer cells and secretory cells. However, these characters cannot be used for separation of five subfamilies, which do not correspond with the Endress and Bruyns' classification. [ABSTRACT FROM AUTHOR]

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