FIGURES 108–113 in The diatom genus Oricymba in Vietnam and Laos with description of one new species, and a consideration of its systematic placement

FIGURES 108–113. Oricymba voronkinae sp. nov. 108. external view. 109–113, internal views. 108. Girdle view showing distinct marginal ridge and striae extending from valve face to mantle. 109. Low magnification valve view with distinct central nodule present. 110, 111. Central area demonstrating lack of an intermission and two elongate-elliptical stigma openings occluded by a dendritic structure. 112, 113. Apices with distinct helictoglossae offset from axial area. Siliceous granules are present around aveoli. Porelli area restricted to the mantle. Scale bars = 5 μm in Fig. 108; 10 μm in Fig. 109; 1 μm in Figs 110, 112; 0.5 μm in Figs 111, 113.