pictures

identification source
Handbook of Algae Herman Silva Forest
Fig87 pg. 90 University of Tennessee Press Knoxville 1954

Melosira , Freshwater Algae, Their microscopic world explored Hilda Canter-Lund John Wg Lund
Fig 250 252, Pg.138 Biopress Ltd Bristol, England 1995
Fragilana, Algae of Illinois , Lewis Handford Tiffany , Max Edwin Britton, Fig.695 Pg.232
University of Chicago Press, Chicago Il, 1952

Free Living Freshwater Protozoa:a color guide, D.j. Patterson, Drawings by Stuart Hedley Mnsion Publishing 1996 ASM Press Washington D.C.

Handbook of Algae Herman Silva Forest
Fig 594 pg. 386 University of Tennessee Press Knoxville 1954

 Freshwater Biology Henry Baldin Ward George Handler Whipple Fig 594 pg.336 Stan hope Press F.H.Gilson Company Boston, U.S.A