Subgenus: lacks arm-like projections (Illustrations of The Japanese Fresh-water Algae, 1977)
Section [Raphidiastrum]:
Species [ var. simonyi ]: Cell body 19-24 μm long, 18-25 μm (excluding spines), isthmus 6-7.5 μm wide, 6 short spines at each side of trianglur semicell in top view
[ var. sparse-aculeatum (Schmidle) Hirano ]: Cell body 19.6-23.7 μm long (excluding spines), 19.6-19.8 μm wide (excluding spines), isthmus 5.6-7.7 μm wide, spines equal in length (Illustrations of The Japanese Fresh-water Algae, 1977)
Google Image Search
| Marginal spines short; number of marginal spines more than 4 | |||
v. simonyi 24 x 21 μm Hachiman-numa m. Hachimantai Iwate, 2006  |
v. simonyi μm near Hachimantai Mt Hachimantai Iwate, 2007 |
v. simonyi 24 x 23 μm Mida-ga-hara Gassan Yamagata, 2005 |
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v. simonyi 24 x 25 μm ? Kama-ike Azuma mountain Fukushima, 2006 |
v. simonyi ? 22 x 20 μm Oze-ga-hara Katashina Gunma, 2006 |
v. simonyi ? μm Ayamedaira 3 Katashina Gunma, 2007 |
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v. simonyi 20 x 21 μm Kumakubo Nasu-shiobara Tochigi, 2005 |
v. simonyi ? 26 x 26 μm Uba-ga-daira Nasu Tochigi, 2006 |
v. simonyi μm Kareki-numa m. Nikko Tochigi, 2008 |
v. simonyi μm Motoyu marsh Nikko Tochigi, 2008 |
v. simonyi 26 x 21μm Shibu-ike Shiga highland Nagano, 2005 |
v. simonyi ? 19 x 17 μm Watasuge marsh Tsugaike highland Nagano, 2005 |
v. simonyi ? 23 x 23 μm Karakemi marsh Yasaka Nagano, 2005 |
v. simonyi ? 26 x 26 μm Karakemi marsh Omachi Nagano, 2007 |
v. simonyi μm Kowashimizu Suwa Nagano, 2007 |
v. simonyi ? 23 x 22 μm Midagahara Tate-yama Toyama, 2006 |
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| Marginal spines longer than those of var. simonyi; number of marginal spines 4 | |||
v. sparse-aculeatum μm Hanadate S.W. Yuri-Honjo Akita, 2008 |
v. sparse-aculeatum x 20 μm Sensho-ga-hara 5 Shizukuishi Iwate, 2007 |
v. sparse-aculeatum x 20 μm Sensho-ga-hara 8 Shizukuishi Iwate, 2007 |
v. sparse-aculeatum μm Mitsuishi marsh Hachimantai Iwate, 2008 |
v. sparse-aculeatum ? 25 x 24 μm East of Tojuro Azuma mountains Yamagata, 2007 |
v. sparse-aculeatum μm Yokotashiro Katashina Gunma, 2008 |
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v. sparse-aculeatum ? 25 x 25 μm Karakemi marsh Yasaka Nagano, 2005 |
v. sparse-aculeatum x 19 μm Watasuge marsh Tsugaike highland Nagano, 2005 |
v. sparse-aculeatum 20 x 19 μm Watasuge marsh Tsugaike highland Nagano, 2006 |
v. sparse-aculeatum 20 x 19 μm Watasuge marsh Tsugaike highland Nagano, 2006 |
v. sparse-aculeatum 21 x 21 μm Hyoutan-ike Shiga highland Nagano, 2007 |
v. sparse-aculeatum 22 x 22 μm Shijuhachi-ike Shiga highland Nagano, 2007 |
v. sparse-aculeatum 26 x 25 μm Tanohara marsh Shiga highland Nagano, 2007 |
v. sparse-aculeatum ? 20 x 25 μm Kowashimizu Suwa Nagano, 2005 |
v. sparse-aculeatum μm Mi-ike 2 Norikura highland Nagano, 2007 |
v. sparse-aculeatum 20 x 21 μm Tane-ike Togakushi highland Nagano, 2005 |
v. sparse-aculeatum x 22 μm Kodanuki marsh Fujinomiya Shizuoka, 2006 |
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