PLATE 11, FIGURES 61–66. G. basirobusta. SEM. Figs 64, 66, external views. Fig. 64 in New Gomphoneis Cleve (Bacillariophyceae: Gomphonemataceae) species from Xinjiang Province, China

PLATE 11, FIGURES 61–66. G. basirobusta. SEM. Figs 64, 66, external views. Fig. 64. Central area, showing striae composed of two rows of areolae tapering to single rows near the axial area. Fig. 66. Footpole, with distal raphe end bisecting the bilobed apical pore field. Porelli are organized into two rows. Figs 61–63, 65, internal views. Fig. 61. Entire valve view with prominent axial area, footpole and helictoglossa. Fig. 62. Central nodule is small and internally elevated, areolae near the center have prominent thickenings. Central nodule has recurved proximal raphe ends. Fig. 63. Headpole, with helictoglossa and pseudoseptum prominent. Fig. 65. Footpole, with helictoglossa prominent, pseudoseptum present and interstriae dividing the rows of porelli at the pore field.