Subgenus: Entomum (Apical area deeply indented or notched)
Section: Incisa (Cell surface smooth; apical area without spiny projections)
Species: Cell body μm long, μm wide, L/W=, isthmus μm wide; (Illustrations of The Japanese Fresh-water Algae, 1977).
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E. ampullaceum 92-101 x 53-57 μm L/W=1.7-1.8 Kenashitai Hakkoda mountain Aomori, 2005 |
E. ampullaceum 100 x 63 μm L/W=1.8 Tashirodaira m. 5 Hakkoda mountain Aomori, 2006  |
E. ampullaceum 102 x 56 μm L/W=1.6 Tashirodaira m. 6 Hakkoda mountain Aomori, 2006 |
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E. ampullaceum 97 x 54 μm L/W=1.8 Sensho-ga-hara 6 Shizukuishi Iwate, 2007 |
E. ampullaceum 92 x 54 μm L/W=1.7 Sensho-ga-hara 9 Shizukuishi Iwate, 2007 |
E. ampullaceum μm L/W= Mitsuishi m.2 Hachimantai Iwate, 2008 |
E. ampullaceum μm L/W= Shibakusadaira Zao mountain Miyagi, 2007 |
E. ampullaceum 84 x 59 μm 80 x 50 μm L/W=1.4,1.6 Iroha-numa Zao mountain Yamagata, 2005 |
E. ampullaceum 96 x 58 μm L/W=1.7 Iroha-numa 2 Zao mountain Yamagata, 2006 |
E. ampullaceum 96 x 58 μm L/W=1.6 Iroha-numa 1 Zao mountain Yamagata, 2006 |
E. ampullaceum μm L/W= Iroha-numa 2 Zao mountain Yamagata, 2008 |
E. ampullaceum 85 x 50 μm L/W=2.3 Mida-ga-hara 9 Gassan (mt.) Yamagata, 2006 |
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E. ampullaceum 112* x 48 μm L/W=2.3 Oze marsh Katashina Gunma, 2006 |
E. ampullaceum μm L/W= Ayamedaira 2 Oze marsh Gunma, 2007 |
E. ampullaceum μm L/W= Ayamedaira 4 Oze marsh Gunma, 2007 |
E. ampullaceum μm L/W= Yokotashiro 4 Oze marsh Gunma, 2008 |
E. ampullaceum μm L/W= Miyatoko m.5 Minami-Aizu Fukushima, 2008 |
E. ampullaceum μm L/W= Miyatoko m.3 Minami-Aizu Fukushima, 2008 |
