Family: Cell body cylindrical or spindle-shaped, loosely attached with each other to form a filamentous colony; cell wall smooth, consists of a single partition, one layer; 1-2 chloroplasts plate- or ribbon-like, with pyrenoids; a single nucleus centrally placed.
Genus: Cell body ellipsoidal or short cylindrical; chloroplasts plate-like (Illustrations of The Japanese Fresh-water Algae, 1977) .
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M. macrococcum
11 samples
23-44 x 13-18 μm
2004-2008
M. chlamydosporum ?
28 x 17 μm
Omine-numa
Tsukiyono
Gunma, 2003
M. chlamydosporum
28 x 12.5 μm
Shijuhachi-ike 4
Shiga highland
Nagano, 2006
M. chlamydosporum?
μm
Shijuhachi-ike 3
Shiga highland
Nagano, 2008
M. caldariorum
32 x 10 μm
L/W= 3.2
Numa-no-hara m.
Madarao highland
Niigata, 2006
M. caldariorum
μm
L/W=
Kurome-gawa b.
Asaka
Saitama, 2008
Similar genus -->> Roya; Netrium; Penium;
