FIGURES 19–24 in A new species of Gomphosinica (Bacillariophyta) from Lugu Lake, Yunnan Province, SW China

FIGURES 19–24. Gomphosinica lugunsis Liu, Kociolek, You & Fan sp. nov. SEM pictures, externally view. Figs 19–20: The whole valve; Fig. 21: Headpole of the valve, showing the distal raphe end (white arrow), and the two rows of areolae (black arrow); Fig 22: Central area of the valve, showing the opening of the stigma (white arrow), and the central pore (black arrow); Figs 23–24: Footpole of the valve, Fig. 27: showing the apical pore field, Fig. 28: showing the distal raphe end.