Subgenus: Entomum (Apical area deeply indented or notched)
Section: Incisa (Cell surface smooth; apical area without spiny projections)
Species: Cell body 95-132 μm long, 56-70 μm wide, L/W=1.7, isthmus 15.4-22 μm wide; upper lateral lobes mamillate and projected obliquely upward, located slightly anterior from the middle line of semicells; a single pore present at the center of semicells (Illustrations of The Japanese Fresh-water Algae, 1977).
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E. humerosum 115-120 x 63-67 μm L/W=1.7-1.9 Sukawa highland Kurikoma mountain Akita, 2005 |
E. humerosum 107 x 63 μm L/W=1.7 Sukawa highland Kurikoma mountain Akita, 2007  |
E. humerosum 126 x 69 μm L/W=1.8 Yukawa-numa Nishiwaga Iwate, 2007 |
E. humerosum var. ?? 141 x 70 μm L/W=2.0 Kuroyachi m.2 Hachimantai Iwate, 2007 |
E. humerosum var. ?? 102 x 57 μm L/W=1.8 Mida-ga-hara 5 Gassan (mt.) Yamagata, 2006 |
E. humerosum var. ?? x 65 μm L/W= Iroha-numa Azuma mt. Yamagata, 2007 |
E. humerosum var. ?? x 63 μm L/W= near Ningyo-ishi Azuma mt. Yamagata, 2007 |
E. humerosum var. ?? 98 x 55 μm L/W=1.8 Goyo-no-izumi Shimogo Fukushima, 2006 |
E. humerosum var. ?? 115,120 x 60-65 μm L/W=1.8-1.9 near Hyoutan-ike Nasu Tochigi, 2006 |
E. humerosum var. ?? 104 x 55 μm L/W=1.9 Hyoutan-ike Nasu Tochigi, 2007 |
E. humerosum 110 x 60 μm L/W=1.8 Kareki-numa Nikko Tochigi, 2008 |
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E. humerosum 115 x 60 μm L/W=1.9 Ko-numa Akagi mountain Gunma, 2007 |
E. humerosum μm Yokotashiro 2 Katashina Gunma, 2007 |
E. humerosum μm Yokotashiro 4 Katashina Gunma, 2008 |
E. humerosum μm Fujimitashiro Katashina Gunma, 2007 |
E. humerosum var. ?? 98 x 55 μm L/W=1.8 Kamino-tanbo Tsugaike highland Nagano, 2006 |
E. humerosum 112 x 66 μm L/W=1.7 Tanohara marsh Shiga highland Nagano, 2004 |
E. humerosum 110 x 57 μm 101 x 58 μm L/W=1.9, 1.7 Tanohara marsh Shiga highland Nagano, 2005 |
E. humerosum 107 x 56 μm L/W=1.9 Tanohara marsh Shiga highland Nagano, 2006 |
E. humerosum var. ?? 110 x 65 μm L/W=1.7 Tanohara marsh Shiga highland Nagano, 2004 |
E. humerosum 113 x 65 μm L/W=1.7 Tanohara marsh Shiga highland Nagano, 2007 |
E. humerosum var. ?? 106 x 60 μm L/W=1.8 Hikage marsh Shiga highland Nagano, 2005 |
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E. humerosum 115 x 65 μm L/W=1.8 Ushidome-ike Norikura highland Nagano, 2005 |
E. humerosum μm L/W= Ushidome-ike Norikura highland Nagano, 2007 |
