| 
3) Cell body moderately curved; inner side concaved; L/W = 6-7; body < 300 μm | 
 
	 var. moniliferum
	 290 x 46 μm
	 270 x 47 μm
	 L/W=6.3, 5.7
	 Yamaguchi Univ.
	 Yamaguchi, 2004 | 
 
	 var. moniliferum
	 290 x 43 μm
	 L/W=6.3
	 near Karasu river
	 Fujioka
	 Gunma, 2004 | 
 
	 var. moniliferum
	 250-288 x 35-48 μm
	 L/W=6.0-7.1
	 Japan, 1998 | 
 
	 var. moniliferum
	 280 x 44 μm
	 L/W=6.4
	 Sanda
	 Hyogo, 2001 | 
 
	 var. moniliferum
	 280 x 47 μm
	 L/W=6.0
	 Midori-no-ike
	 Togakushi highland
	 Nagano, 2005 | 
 
	 var. moniliferum
	 250 x 42 μm
	 L/W=6.0
	 Togakushi highland
	 Nagano, 2006
	
   | 
 
	 var. moniliferum
	 280 x 45 μm
	 L/W=6.2
	 Satsunai river
	 Obihiro
	 Hokkaido, 2005 | 
 
	 var. moniliferum
	 268 x 40 μm
	 L/W=6.7
	 Kitamoto
	 Saitama, 2001 | 
 
	 var. moniliferum
	 265 x 42 μm
	 L/W=6.3
	 Hazama marsh
	 Ashikaga
	 Tochigi, 2003 | 
 
	 var. moniliferum
	 260-280 x 40-42 μm
	 L/W=6.5-6.7
	 Hazama marsh
	 Ashikaga
	 Tochigi, 2006
	
   | 
 
	 var. moniliferum
	 270 x 40 μm
	 L/W=6.8
	 Kejo-numa
	 Furukawa
	 Miyagi, 2003 | 
 
	 var. moniliferum
	 265 x 38 μm
	 L/W=7.0
	 drainage ditch
	 Urawa
	 Saitama, 2005 | 
 
	 var. moniliferum
	 250 x 37 μm
	 L/W=6.8
	 Japan, 1998 | 
 
	 var. moniliferum
	 250 x 40 μm
	 L/W=6.3
	 Niigata, 2001 | 
 
	 var. moniliferum
	 250 x 40 μm
	 L/W=6.3
	 Tachikawa
	 Tokyo, 2001 | 
 
	 var. moniliferum
	 250 x 40 μm
	 L/W=6.3
	 rice field
	 Ichinoseki
	 Iwate, 2005 | 
 
	 var. moniliferum
	 250 x 37 μm
	 L/W=6.8
	 Konpira bridge
	 Shirakawa
	 Fukushima, 2003 | 
 
	 var. moniliferum
	 234 x 38 μm
	 L/W=6.2
	 Japan, 1999 | 
 
	 var. moniliferum
	 235 x 35 μm
	 L/W=6.7
	 Tochigi, 2001 | 
 
	 var. moniliferum
	 220 x 37 μm
	 cell division
	 Saitama, 2000 | 
 
	 var. moniliferum
	 208 x 33 μm
	 L/W=6.3
	 Uruguay, 1999 | 
 
	 var. moniliferum ?
	  μm
	 L/W=6
	 Japan, 199? | 
 
	 var. moniliferum
	 215 x 33 μm
	 L/W=6.5
	 Kejo-numa
	 Furukawa
	 Miyagi, 2003 | 
 
	 var. moniliferum
	 212 x 34 μm
	 L/W=6.2
	 near City Hall
	 Fujimi
	 Saitama, 2004 |