Species: Cell body 46-62 μm long, 36-45 μm wide, L/W= 1.25-1.33;
semicells pyramidate-trapeziform, apex trucated and 4-6 crenate, lateral margins convex, 6-8 crenate,
all the crenations consist of bigranules or emarginations, bicrenate granules arranged radially from the center,
which locates just above the isthmus; the 6-7 vertical series of granulte ridges present at the center;
side view of the semicells ovate-oblong, convexing at the center for both side;
vertical view elliptic-oblong (Photomicrographs of the Freshwater Algae, vol. 3, 1985).
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31 μm
