BRYALES 



279 



JB. 



1 1'.. 136. 



riu hygromelrica. A = longitudinal section of a sporogonium showing the first 

 ifferentiation of its parts. X about 96. = the upper part of the same. x6oo. 

 marks the limits of theca and operculum. C = basal part of capsule of the same. x6oo. 

 <zr=archesporium ; f(?/=columella. (After Campbell.) 



