Plate 48 



Fig. 1. Pediastrum Bonjaniim (Turp.) Meneghini, x 330 (re- 



drawn from Smith ) 



Fig. 2. Pediastrum Boryaniim var. undulatum Wille, x 500 



Fig. 3. Pediastrum Boryanum (Turp.) Meneghini, x 500 



Fig. 4. Pediastrum duplex Meyen, x 500 (redrawn from Smith) 



Fig. 5. Pediastrum Braunii Wartmann, x 750 



Fig. 6. Pediastrum duplex var, ckithratum (A. Braun) Lager- 



he im, x 500 



Fig. 7. Pediastrum integrum var. priva Printz, x 666 ( redrawn 



from Smith ) 



Fig. 8. Pediastrum duplex var. rotumlatum Lucks, x 333 (re- 



drawn from Smith ) 



Figs. 9, 10. Pediastrum integrum NaegeH: 9, x 330; 10, x 500 



Fig. 11. Pediastrum duplex var. cohaerens Bohhn, x 500 



Fig. 12. Pediastrum duplex var. gracilimum West & West, x 



333 (after Smith) 



[756] 



