ERRATA 



P. 83, line 18 from top ; for " erythrophl " read " erythrophyll." 

 161, 7 ; " the " (last word in the line) read " but." 

 ., 244, 29 ; " Sytonemaceae " read " Scytonemacese." 

 .. 273. 6 from bottom ; for " ooblastema-filaments " read " gonimo- 



blastic filaments." 



,9 ; " arilode " read " arillode." 



7 from top; for " brocteoles " read " bracteoles." 



