FIGURES 14–18 in A New Aerophilic Neidium Pfister (Neidiaceae, Bacillariophyta) species from Guangxi Zhuang Autonomous Region, China

FIGURES 14–18. Neidium convolutum Liu & Kociolek sp. nov. SEM, external view. Fig. 14: Girdle view of the whole frustule; showing the twist of the valve; Fig. 15: Unporiod girdle bands; Fig. 16: Girdle view of the apex, showing the original position of lacinia (white arrow); Fig. 17: Areolae in the axial area with volate occlusions (white arrow); Fig. 18: Areolae on the longitudinal canal with volate occlusions (white arrow).