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Gamophyceae: Desmidales: Desmidiaceae
(Charophyceae: Zygnematales: Desmidiaceae)

 Hyalotheca dissiliens
var. minor Delponte

Hyalotheca dissiliens Species: Cell body 14-22 μm long, 23-32 μm wide, constriction 22-.30.4 μm wide (Illustrations of The Japanese Fresh-water Algae, 1977). Cell body 14-22 μm long, 23-32 μm wide, outline shape transversely rectangular, slightly constricted in the middle, vertically circular (f. dissiliens), sometimes with a slight papilla in opposite disposition (f. bidentula) or three ones equidistantly (f. tridentula); semicells subtrapeziform, lateral margin convex; cell wall punctated; filaments not twisted (Photomicrographs of the Freshwater Algae, vol. 1, 1984).

Hyalotheca dissiliens (Smith) Brébisson var. minor Delponte, cell body 12.5 μm long, 16 μm wide, L/W=0.8, gelatinous coat 13 μm in thickness, x 640, No. 2-3, Numa-no-hara marsh (Genseikaen), Madarao highland (Niigata & Nagano Pref.), Myoko village, Niigata Pref., Japan, June 17, 2006 by Y. Tsukii
scale 50 μm scale 100 μm scale 150 μm; x 400 : scale 31 μm scale 63 μm scale 94 μm; x 640
Hyalotheca Hyalotheca

Images of collecting locality: No. 1, 2, Numa-no-hara marsh (Genseikaen), Madarao highland (Niigata & Nagano Pref.), Myoko village, Niigata Pref., Japan, June 17, 2006 by Y. Tsukii

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