FIGURE 1 in A narrow endemic new species of Dendrobium sect. Stachyobium from Thailand (Orchidaceae: Malaxideae)

FIGURE 1. Leaf structure in Dendrobium obchantiae (A–C, G–I, M–O) and D. incurvum (D–F, J–O) A. Adaxial epidermal cells with smooth cuticular ornamentation (SEM). B. Abaxial epidermal cells with smooth cuticular ornamentation and stomata (SEM). C. Tetracytic stomata in abaxial view (light microscope). D. Adaxial epidermal cells with striae-nett cuticular ornamentation (SEM). E. Abaxial epidermal cells with striae-nett cuticular ornamentation and stomata (SEM). F. Pentacytic and tetracytic stomata in abaxial surface (light microscope). G–H. Peltate glandular trichome type I on leaves, light microscope. I, Peltate glandular trichome type I on leaves, SEM. J–K. Peltate glandular trichome type II on leaves, light microscope. L. Peltate glandular trichome type II on leaves. M–O. Types of crystals found in both D. obchantiae and D. incurvum: raphide crystal, druse crystal. Abbreviations: st = stomata, pgt I = peltate glandular trichome type I, pgt II = peltate glandular trichome type II, ra = raphide crystal, dus = crystal druses.