Subgenus: Entomum (Apical area deeply indented or notched)
Section: Incisa (Cell surface smooth; apical area without spiny projections)
Species: Cell body 47-73 μm long, 34-36 μm wide, isthmus 11-14 μm wide (Illustrations of The Japanese Fresh-water Algae, 1977).
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E. gnathophorum 66* x 34 μm Mida-ga-hara 7 Gassan (mt.) Yamagata, 2006  |
E. gnathophorum 68 x 38 μm Mida-ga-hara 9 Gassan (mt.) Yamagata, 2006 |
E. gnathophorum 70* x 34 μm Iroha-numa Zao mountain Yamagata, 2005 |
E. gnathophorum x 31 μm Iroha-numa 1 Zao mountain Yamagata, 2006 |
E. gnathophorum μm Utsubo-numa Zao mountain Yamagata, 2008 |
E. gnathophorum μm Shibakusadaira Zao mountain Miyagi, 2007 |
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E. gnathophorum μm Numappara marsh Kuroiso Tochigi, 2003 |
E. gnathophorum ??? Numappara marsh Kuroiso Tochigi, 2003 |
E. gnathophorum μm Numappara marsh Nasu-shiobara Tochigi, 2007 |
E. gnathophorum μm Kareki-numa Nikko Tochigi, 2008  |
E. gnathophorum μm Omine-numa Tsukiyono Gunma, 2003 |
E. gnathophorum μm Omine-numa Tsukiyono Gunma, 2003 |
E. gnathophorum ??? Omine-numa Tsukiyono Gunma, 2003 |
E. gnathophorum 63,66 x 30 μm Omine-numa Tsukiyono Gunma, 2006 |
E. gnathophorum 65 x 31 μm Omine-numa 6 Tsukiyono Gunma, 2007 |
E. gnathophorum 57 x 35 μm Shibu-ike Shiga highland Nagano, 2005 |
E. gnathophorum 61 x 35 μm Shimo-no-koike Shiga highland Nagano, 2004 |
E. gnathophorum (68) x 34 μm Ushidome-ike Norikura highland Nagano, 2005 |
E. gnathophorum 70-73 μm Kodanuki marsh Fujinomiya Shizuoka, 2005 |
E. gnathophorum 66* x 34 μm Kodanuki marsh Fujinomiya Shizuoka, 2006 |
E. gnathophorum 75-78 x 38 μm Imou bog Toyohashi Aichi, 2004 |
E. gnathophorum 83 x 41 μm Imou bog 3 Toyohashi Aichi, 2006 |
E. gnathophorum μm Yamamuro m.8 Maibara Shiga, 2008 |
E. gnathophorum μm Kashibaru m.II Karatsu Saga, 2008 |
