Ulvophyceae: Ulotrichales: Ulotrichaceae
Phylum Viridiplantae: Subphylum Streptohyta: Class Klebsormidiophyceae (Protistology, 2003)

Klebsormidium
P.C. Silva, Mattox et W.H. Blackwell 1972
Syn.: Chlorhormidium; Hormidium

Order: Filamentous algae without branching; cell body mostly cylindrical.
Family: Chloroplasts plate-like or ribbon-like; sexual reproduction by isogamy.
Genus: Without gelatinous sheath; filaments consist of many cells; no rhizoid (Illustrations of The Japanese Fresh-water Algae, 1977).

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Cell body more than 8 μm in diam.
K. flaccidum 7 samples 9-24 x 9-12 μm 1998-2005	K. flaccidum 7 samples 9-24 x 9-12 μm 1998-2005	K. flaccidum 7 samples 9-24 x 9-12 μm 1998-2005	K. flaccidum 7 samples 9-24 x 9-12 μm 1998-2005
Klebsormidium ? 7-12 x 10 μm Benten-ike Higashi-Murayama Tokyo, 2004	Klebsormidium ? 13-16 x 10 μm Satsunai river Obihiro Hokkaido, 2005	Klebsormidium ? 7-10 x 9 μm Futayo-no-ike Haguro mountain Yamagata, 2005	Klebsormidium ? 12-14 x 9 μm Kumakubo Nasu-shiobara Tochigi, 2005
Klebsormidium ? 24 x 8 μm Satsunai river Obihiro Hokkaido, 2005	Klebsormidium ? 5-6 x 8 μm Shiken-zaike Kamikawa Saitama, 2004
Cell body less than 8 μm in diam.
K. nitens Syn. K. klebsii 24 samples x 4.5-7 μm 1999-2006	K. nitens Syn. K. klebsii 24 samples x 4.5-7 μm 1999-2006	K. nitens Syn. K. klebsii 24 samples x 4.5-7 μm 1999-2006	K. dissectum ? 9-11 x 5 μm Kejo-numa Furukawa Miyagi, 2003
Klebsormidium sp. 10 x 6-7 μm Omotsubo marsh Tetta-cho Okayama, 2004	Klebsormidium sp. 6-7 x 6 μm Numa-no-hara m. Madarao highland Niigata, 2005	Klebsormidium sp. 5.5-8.5 x 6.5 μm Watarase Wetland Fujioka Tochigi, 2005	Klebsormidium sp. 6 x 5 μm Karakemi marsh Omachi Nagano, 2006

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