Genus:
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P. hyalothecae
8-15 μm φ
Sukawa highland
Kurikoma mt.
Akita, 2007
P. hyalothecae
μm φ
Kuroyachi m.2
Hachimantai
Iwate, 2007
P. hyalothecae
μm φ
Mitsuishi marsh
Hachimantai
Iwate, 2008
P. hyalothecae
45-52 μm φ
Yahei-daira m.4
Azuma mt.
Yamagata, 2007
P. hyalothecae
μm φ
Fujimitashiro
Oze-ga-hara
Gunma, 2007
P. hyalothecae
10-20 μm φ
Midagahara
Tate-yama
Toyama, 2006
P. hyalothecae
~20 μm φ
Tanohara marsh
Shiga highland
Nagano, 2006
P. hyalothecae
10-16 μm φ
Watasuge marsh
Tsugaike highland
Nagano, 2006
P. hyalothecae
μm φ
Shibu-ike 2
Shiga highland
Nagano, 2008
P. hyalothecae
μm φ
Shijuhachi-ike 3
Shiga highland
Nagano, 2008Similar genus -->> Chrysopyxis (Chrysophyceae);