Family: Pseudostome terminal, of variable shape.
Genus: (Illustrated Guide, 1985).

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P. papillomata or Cucurbitella ? 98 x 82 μm Tennoh Tessei-cho Okayama, 2004

P. papillomata or Cucurbitella ? 138 x 110 μm Aizu Recreation p. Aizuwakamatsu Fukushima, 2005

P. papillomata or Cucurbitella ? 140 x 125 μm Obihiro-Hasshonochi Obihiro Hokkaido, 2005

Similar Genus -->> Cucurbitella; Difflugia;

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