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).
|
31 μm
63 μm
94 μm; x 640
Cosmarium margaritatum (P. Lundell) J. Roy et Bisset,
cell body 74 μm long, 76 μm wide, isthmus 25 μm wide,
x 640, rice field, Tsukamoto, Nishi-ku, Saitama city, Saitama Pref., Japan, May 30, 2004 by Y. Tsukii
31 μm
63 μm
94 μm; x 640
