Species: Cell body 78-90 μm long, 70-72 μm wide, L/W=1.20-1.25,
isthmus 22-25 μm wide;
semicells subrectangular, basal angles rounded, lateral margins convex, anical angles broadly rounded,
apex truncate and flat; cell wall regularly granulated, between the granules finely punctated;
side view of the semicells subcircular, vertical view oblong-elliptic;
zygospores spherical or slightly depressed, with yellowish smooth wall, surrounded by mucilagenous sheath,
44.8-47.6 μm in diam.
(Photomicrographs of the Freshwater Algae, vol. 3, 1985).
[f. minor]: Cell body 58-59 μm long, 54 μm wide, isthmus 18-19 μm wide (Illustrations of The Japanese Fresh-water Algae, 1977). |
31 μm
63 μm
94 μm; x 640
