Fig. 109. — Fiinaria hygrometrica. A, Longitudinal section of a sporogonium showing 

 the first differentiation of its parts, X about 96; B, the upper part of the same, 

 X600; r marks the limits of the theca and operculum; C, basal part of the cap- 

 sule of the same, X600. The intercellular spaces are beginning to form; ar, 

 archesporium; col, columella. "^ 



