k6 



Fig. 6l. Synedra Vaucheriae , ( 5 ), cells 10-40u long, 2-k\s wide; 



12-16 striae in lOu; central area clear and thickened only 

 on one side. X 1000. Widely distributed. 



^SHS> ^32STSS=== var. capitellata 



«ssSH!E3B&- c^TSI^ var - truncata 



valve views 

 valve views, 

 S. Vaucheriae 



Notes : 



Notes on other species of SYNEDRA. 



