FIGURES 41–46 in Two new freshwater species of Bacillaria (Bacillariophyta) from Dongting Lake, China

FIGURES 41–46. Bacillaria dongtingensis sp. nov., colony and frustule view, SEM. 41. A colony. 42. Middle detail of Fig. 41, note raphe flange present on one side only (RF), one transapical rib forming two branches (arrow), and two transapical ribs merging into one (three curved arrows). 43. A dismantled frustule. 44. Middle part of Fig. 43, note raphe flange present on one side only (RF) and rudiments of marginal spines. 45, 46. Two apical details of Fig. 43, note raphe flange present on one side only (RF), T-shaped distal raphe ends, rudiments of marginal spines, and two girdle bands (B1 and B2). Scale bars =10 μm (Figs 41, 43), 2 μm (Fig. 42), 1 μm (Figs 44–46).