Family: Filamentous algae attached to a substrate at base, differentiation of axis-branch structure variable; cell body cylindrical, spherical or elongated ellipsoidal, with one or several plate-like chloroplasts; pyrenoids one to several in number or absent; terminal cells tapered or rounded at its end (Illustrations of The Japanese Fresh-water Algae, 1977).
Genus: Filament with branching; cell body cylindrical; a single chloroplast plate-like, slightly curved, with 1 to several pyrenoids; apical cells pointed or drawn out as hairly projections; no difference between axial and branching filaments; forming a large clump attached on a substrate (Guide book to the "Photomicrographs of the Freshwater Algae", 1998).
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Similar Genus -> Cloniophora; Cladophora;
Branching rare at the base, numerous at anterior ends forming tuft
C. pisiformis
or C. attenuata ?
μm
Nagaike park
Hachioji
Tokyo, 2005
C. pisiformis ?
μm
Japan, 2000
C. pisiformis ?
μm
Akasaka-numa
Iwatsuki-ku
Saitama, 2006Di- or trichotomous branching uniformly occurs throughout whole filaments
C. elegans
7-20 x 5-7 μm
Iyari marsh
Omachi
Nagano, 2006
C. elegans ?
μm
Numa-no-hara m.
Madarao highland
Niigata, 2005
C. elegans
or Cloniophora ?
μm
Japan, 1999
Chaetophora sp. ?
μm
Yoshikawa
Saitama, 2003
Chaetophora sp. ?
or Draparnaldia?
μm
Ichinose-enchi
Norikura highland
Nagano, 2005
Chaetophora sp. ?
7-12 x 12 μm
Kawaguchi n.p.
Kawaguchi city
Saitama, 2005
Chaetophora sp. ?
or Cloniophora ?
12 x 8 μm
Shirakobato w.p.
Koshigaya
Saitama, 2005