138 



iMKMOlRS OF THE KRVV YORK BOTANICAL GARDEN 



PLATE 22 



Figure 56. Stigonema Hpiniferum 



Portion of n tyi)ical plant witli hormogonii'erous 



branches and, T, a cross-section x 250 



" 57. Stigonema sc\jtoneynatoidcs 



Portion of an older filament with a single vege- 

 tative branch and, N, apical portion of a branch, 

 sliowing tlie character of lamellation of the 



tegument x 250 



" 58. Stigonema opalesccns 



T'l)por portion of a typical filament x 250 



