Genus: Filament without branching; cell body cylindrical; one or several chloroplasts band-shaped, spirally arranged within the cell, pyrenoids present; septum with or without folded structure (Guide book to the "Photomicrographs of the Freshwater Algae", 1998). About 300 species (Illustrations of The Japanese Fresh-water Algae, 1977).
Species: Vegetative cells 65-240 μm long, 29-36 μm diam.; 1 chloroplast making 2.5-8 turns in each cell; conjugation scalariform; tubes formed from both gametangial cells; female gametangium cylindrical or slightly swelled; zygospores football-shaped (55-85 μm long, 30-36 μm wide) (Illustrations of The Japanese Fresh-water Algae, 1977).

S. daedaleoides ? 1 chl. 5 turns 180 x 28 μm diam. Onnenai Kushiro marsh Hokkaido, 2005	S. daedaleoides ? 1 chl. 3.5-4.5 turns 130 x 28 μm diam. near Akai wetland Aizuwakamatsu Fukushima, 2005
S. daedaleoides ? 1 chl. 4.5 turns 125 x 30 μm diam. Yoshi-numa Nasu-shiobara Tochigi, 2006	S. daedaleoides 1 chl. 4/8.5 turns 31, 36 μm diam. Tochigi, 2001	S. daedaleoides or S. singularis ? 1 chl. 3-4 turns 33-34 μm diam. Kinu river Takanezawa Tochigi, 2004	S. daedaleoides 1 chl. 3.5 turns 31 μm diam. Akagi forest p. Fujimi Gunma, 2005
S. daedaleoides 1 chl. 2-2.5 turns 32 μm diam. Urawa Minkaen Midori-ku Saitama, 2006	S. daedaleoides 1 chl. 2.5 turns 41 μm diam. Sakura Riverside p. Kumagayaku Saitama, 2008	S. daedaleoides 1 chl. 3 turns 32 μm diam. Kasukabe Saitama, 2004	S. daedaleoides ? 1 chl. 5 turns 32 μm diam. Michi-no-Oasis Shobu Saitama, 2004
S. daedaleoides 1 chl. 3-3.5 turns 30 μm diam. Sendabori Chiba, 2002	S. daedaleoides 1 chl. 4 turns 30 μm diam. Higashi-Murayama Tokyo, 2004
S. daedaleoides ? 1 chl. 5 turns 130 x 28 μm diam. Numa-no-hara m. Madarao highland Niigata, 2005	S. daedaleoides ? 1 chl. 3.5-4.5 turns 135 x 28 μm diam. near Oyomi marsh Hakuba Nagano, 2004	S. daedaleoides ? 1 chl. 3.5 turns 88 x 35 μm diam. rice field Ueda Nagano, 2006

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