Species: Cell body ellipsoidal, 9-16 μm long, 5-12 μm wide; papilla short, horizontally broad with flattened apex (frontal view), side view conical; chloroplast cup-shaped; a pyrenoid located at lateral-central side of the cell; nucleus also centrally located or slightly anterior; stigma elongated elliptical, at anterior half of the cell.
[var. eumetabletos (Moewus) Gerloff 1944]: Cell body 15-17 μm long, 8-10 μm wide; stigma more elongated (stick-like); nucleus located at posterior half of the cell (?).
[var. maior Lund 1947]: Cell body large, 16-24 μm long, 6-14 μm wide.
[var. microstigmata (Lund) Ettl 1976]: Papilla more depressed; stigma more small.
[var. monoica Deason et Ratnasabapathy 1976]: Cell body small, 7-8 μm long, 3-4.5 μm wide (Süßwasserflora von Mitteleuropa 9, Chlorophyta I, 1983).

C. moewusii ? 21 x 14.5 μm s: centr.lateral Kurome river Asaka Saitama, 2004	C. moewusii ? Tnk-12, axenic p: centr.lateral s: centr.lateral Tochigi, 2001	C. moewusii ? 11-14 x 4-8 μm s: centr.lateral Iwajuku Gunma, 2001	C. moewusii ? or C. mutabilis ? 15-21 x 12-17 μm s: centr.lateral Iruma river Saitama Saitama, 2004
C. moewusii 14-17 x 10-15 μm Akigase park Saitama, 2005	C. moewusii ? 18-21 x 14-17 μm Shimo-muneoka Shiki Saitama, 2004	C. moewusii ? 25-27 x 20-23 μm Shimo-muneoka Shiki Saitama, 2004	C. moewusii ? 19 x 13.5 μm Asa-kawa Hachioji Saitama, 2005
C. moewusii ? 20-24 x μm Showa-machi g.p. Showa Saitama, 2006

Similar species -> C. mutabilis; C. typhlos (11-15 x 6-9 μm, stigma absent);
Similar genus -> Chloromonas; Chlorococcum;

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