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

Klebsormidium sp.

Klebsormidium 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).
Species:
Similar Genus ->> Ulothrix

Klebsormidium ? or similar species, cell body 7-12 μm long, 10 μm wide, x 400, x 640, Benten-ike (pond), Higashi-Murayama city, Tokyo, Japan, February 11, 2004 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
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Klebsormidium flaccidum (Kützing) S. Mattox et Blackwell (Syn. Hormidium flaccidum (Kützing) Braun): Cell body cylindrical; may slightly swells at middle of the cell; 8-12 μm long, 6-12 μm diam., a single chloroplast plate-like, extends 1/2 of the cell wall (Illustrations of The Japanese Fresh-water Algae, 1977).

Klebsormidium klebsii (G. M. Smith) S. Mattox et Blackwell: Similar to K. flaccidum, but cell body longer; 18-25 μm long, 6-8 μm diam., a single chloroplast with a pyrenoid (Illustrations of The Japanese Fresh-water Algae, 1977).

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