(formerly Xanthophyceae: Mischococcales: Chlorobotrydaceae)
Family: Colonial, usually with a gelatinous coat; 4 daughter cells are connected with filaments derived from their maternal cell wall; cell body spherical, elliptical or heart-shaped; a single chloroplast plate-like or cup-shaped containing a pyrenoid; asexual reproduction by autospore, sexual reproduction by fertilization of egg and sperm.
Genus: Cells aggregate irregular in shape; cells connected by thin filaments; cell body ovoid, 6-10 μm long, 3-6 μm width; a chloroplast plate-like (Illustrations of The Japanese Fresh-water Algae, 1977).
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cell 4-12 μm φ
B. sudetica ?
cell 11 μm
Tanohara marsh 4