Section [Raphidiastrum]:
Species: Cell body small in size, 21-25 μm long (excluding spines), 18.3-24 μm wide (excluding spines), L/W=1.25-1.3, isthmus 6-9 μm wide; semicells elongate elliptical in lateral view, apex flat, each corner rounded, with 2-3 spiny projections, additionally 6-8 spiny projections surrounding around the corners; spines present at the base of the semicells; apical view triangle- or rectangle-shaped (Illustrations of The Japanese Fresh-water Algae, 1977)
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S. hystrix rectangular 27 x 21 μm Kenashitai Hakkoda mountain Aomori, 2005 |
S. hystrix μm Ohyachi 2 Hachimantai Akita, 2007  |
S. hystrix 25 x 24 μm near R. 342 Sukawa highland Akita, 2007 |
S. hystrix μm Ryugahara m.7 Yuri-Honjo Akita, 2008 |
S. hystrix 28 x μm Kuroyachi m.2 Hachimantai Iwate, 2007 |
S. hystrix 25 x μm Mitsuishi m.2 Hachimantai Iwate, 2008 |
S. hystrix 24,26 x 23 μm Mida-ga-hara Gassan (mt.) Yamagata, 2006 |
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S. hystrix μm Hyoutan-ike Nasu Tochigi, 2007 |
S. hystrix ?? x 23 μm Oze marsh Katashina Gunma, 2006 |
S. hystrix μm Yokotashiro 1 Katashina Gunma, 2007 |
S. hystrix 26 x 23 μm Midagahara Tateyama Toyama, 2006 |
S. hystrix 25 x 30 μm Shimo-no-koike Shiga highland Nagano, 2004 |
S. hystrix 28 x 23 μm Shibu-ike Shiga highland Nagano, 2005 |
S. hystrix x 22 μm Shijuhachi-ike Shiga highland Nagano, 2006 |
S. hystrix μm Shijuhachi-ike Shiga highland Nagano, 2008 |
S. hystrix 27 x 24 μm Ukishima marsh Tsugaike highland Nagano, 2005 |
S. hystrix 27 x 23 μm J Skunk Cabbage m. Tsugaike highland Nagano, 2006 |
S. hystrix 26 x 25 μm Ukishima marsh Tsugaike highland Nagano, 2006 |
