AS SEEN IN BRYOPHYTA 



FIG. 



17- 



Fnnaria hygronutrica. A, longitudinal section of a sporogonium showing the first 



differentiation of its parts. X about 96. B, the upper part of the same. x6oo. 



r marks the limits of the theca and operculum. C, basal part of the capsule of the same. 



x6oo. The intercellular spaces are beginning to form. ar, archesporium. col, 



-columella. 



