P. gibba
	 - Valve view -
	 18 samples
	 69-336 μm
	 1999-2006 | 
 
	 P. nobilis
	 - Valve view -
	 296 x 44 μm
	 Niigata, 2001 | 
 
	 P. nobilis ?
	 250 x 40 μm
	 Izumo Shrine
	 Izumo 
	 Shimane, 2006
	
   | 
 
	 P. maior
	 = P. major
	 29 samples
	 94-280 μm
	 1997-2006 | 
 
	 P. maior
	 or P. viridis ?
	 152 x 25 μm
	 Koigakubo marsh
	 Tessei-cho
	 Okayama, 2004 | 
 
	 P. viridis ?
	 30 samples
	 46-155 μm
	 1997-2005 | 
 
	 P. episcopalis
	 170 x 42 μm
	 near Imori pond
	 Myoko highland
	 Niigata, 2004 | 
 
	 Pinnularia sp.
	 117 x 22 μm
	 near Town Hall
	 Shobu
	 Saitama, 2005 | 
 
	 Pinnularia sp.
	 129 x 21 μm
	 Numa-no-hara m.
	 Madarao highland
	 Niigata, 2005 | 
 
	 Pinnularia sp.
	 110 x 20 μm
	 Kamonoyachi n.
	 Zao onsen
	 Yamagata, 2005 | 
 
	 Pinnularia sp.
	 91 x 19 μm
	 near Town Hall
	 Shobu
	 Saitama, 2005 | 
 
	 Pinnularia sp.
	 103 x 19 μm
	 93 x 25 μm
	 Numa-no-hara m.
	 Madarao highland
	 Niigata, 2005 | 
 
	 P. divergens ?
	 83 x 16 μm
	 108 x 17 μm
	 Numa-no-hara m.
	 Madarao highland
	 Niigata, 2005 | 
 
	 Pinnularia sp.
	 85 x 20 μm
	 Kusatsu Onsen b.t.
	 Kusatsu
	 Gunma, 2005 | 
 
	 Pinnularia sp. ?
	 or Caloneis ?
	 59 x 16 μm
	 Kawagoe
	 Saitama, 2001 | 
 
	 Pinnularia sp.
	 - Valve view -
	  μm
	 Chichibu
	 Saitama, 2003 | 
 
	 Pinnularia sp.3
	 - Valve view -
	 71 x 17 μm
	 Japan, 1999 | 
 
	 Pinnularia sp.
	 104 x 19 μm
	 Taki-no-joshi p.
	 Tokorozawa
	 Saitama, 2003 | 
| Constriction at both ends | 
 
	 P. biceps ?
	 8 samples
	  μm
	 1998-2005 | 
 
	 Pinnularia sp.
	 or Caloneis ?
	 38 x 12 μm
	 Kawagoe
	 Saitama, 2001 | 
 
	 P. platycephala ?
	 66 x 14 μm
	 Uruguay, 1999 | 
 
	 P. mesolepta ?
	 or Caloneis?
	 40 x 8.5 μm
	 Kawagoe
	 Saitama, 2001 | 
 
	 P. mesolepta ?
	 or Caloneis ?
	  μm
	 Tsuchiura
	 Ibaraki, 2003 |