126 



MEMOIRS OF THE NEW YORK BOTANICAL GARDEN 



PLATE 16 



Figure 31. Scytonema magnum 



Portions of typical filaments, showinj? ocminate 

 branoliing to the right and a portion of the older 

 part to tlie left x 250 



" 32. Scjjfoncma punctafum 



Portion of a typical filament, showing the punc- 

 tate nature of the slieath x 250 



" 33. Sc]jioncma pulchclJ^nn 



To the left, portion of a filament, showing single 

 and geminate branching ; to the right, M, portion 

 of an older fihimcnt x 250 



