PLATE 17, FIGURES 102–108. G. distorta, SEM. Figs 103–105, external views. Figs 103, 105 in New Gomphoneis Cleve (Bacillariophyceae: Gomphonemataceae) species from Xinjiang Province, China

PLATE 17, FIGURES 102–108. G. distorta, SEM. Figs 103–105, external views. Figs 103, 105. Apices showing doubly-punctate striae and, at the footpole, apical pore field with porelli similar to the areolae. Fig. 104. Central area with dilated proximal raphe ends and striae tapering from biseriate to uniseriate. Figs 102, 106–108, internal view. Fig. 102. Entire valve view. Note prominent helictoglossae and central nodule. Fig. 106. Headpole with helictoglossa slightly offset from main axis of raphe. Fig. 107. Raised central nodule with proximal raphe ends deflected in the same direction. Internal thickenings are evident in the striae near the axial area. Fig. 108. Footpole, with prominent helictoglossa, small pseudoseptum and thin interstriae dividing the porelli.