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Chlorophyceae: Chlorococcales: Scenedesmaceae

Coelastrum morus
W. & G.S. West var. morus

Coelastrum Genus: Colonies spherical, with inner empty space; cells attached to each other by a protrusion of cell wall, arranged in a single layer; cell body mostly spherical with some conical or grobular bulges; chloroplasts cup-shaped with a pyrenoid; reproduction by asexual coenobium (Illustrations of The Japanese Fresh-water Algae, 1977).
Species: Spherical colonies of 8, 16 or more cells within a gelatinous coat; cell body spherical 9-10 (-24) μm in diam., with 4-10 (-14) small truncate, wart-like processes; cells connected to adjacent ones by the basal stout processes (Photomicrographs of the Freshwater Algae, vol. 5, 1986).


Coelastrum morus W. & G.S. West var. morus, colony 28 μm in diam., cell body 10 μm in diam. (including projections), x 640, near Momijidani Ootsuribashi (hanging bridge), Shiobara town, Tochigi Pref., Japan, August 22, 2004, by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Coelastrum morus Coelastrum morus Coelastrum morus

Coelastrum morus W. & G.S. West var. morus: Colonies of 8, 16 or more cells; cells spherical, covered by a delicate gelatinous sheath; sheaths with 4-10 or -14 small truncate, wart-like processes on outer face of the cell; cells connected to another by basal stout processes, 9-10 (-24) μm diam. (Photomicrographs of the Freshwater Algae, 1996).


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