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Xanthophyceae: Mischococcales: Sciadiaceae

 Harpochytrium atkinsonianum
Pascher

Harpochytrium atkinsonianum Order: Unicellular or Colonical.
Family: Unicellar; cylindroid; spiny protrusion at one end.
Genus: Chloroplasts absent (Illustrations of The Japanese Fresh-water Algae, 1977).

Harpochytrium atkinsonianum ?, cell body cylindroid, slightly curved, 60 μm long, 4.5 μm wide, tapered at both end, no chloroplasts, x 400, x 640, Japan, 199? 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
Harpochytrium Harpochytrium

Harpochytrium atkinsonianum ?, cell body cylindroid, slightly curved, 110 μm long, 4.5 μm wide, tapered at both end, no chloroplasts, x 400, x 640, Japan 199? 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
Harpochytrium Harpochytrium

Harpochytrium atkinsonianum Pascher: Cell body cylindroid, slightly curved; tapered at both end; attached to other algae (e.g., Zygnema, Oedogonium) at one end; no chloroplasts; many oil drops; 70-120 μm long, 5-6 μm wide (Illustrations of The Japanese Fresh-water Algae, 1977).

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