FIGURES 44–47. Geissleria pseudobadma. Figs 44, 45 in Phylogenetic position of the diatom genus Geissleria Lange-Bertalot & Metzeltin and description of two new species from Siberian mountain lakes

FIGURES 44–47. Geissleria pseudobadma. Figs 44, 45: Internal view of valve ends, note slit like areolae structure with evident props and elongated subpolar pores (annulus) with warty outgrowths; isolated pores at valve pole. G. irregularis. Fig 46: Internal view of valve end, note elongated subpolar pores (annulus) with warty outgrowths. Fig. 47. G. lacusbaicalensis. (SEM).