204 



MOSSES AND FERNS 



A. 



^19. 106. — Futmria hys^omeirica. Development of i:be -embryo.^ A, Optical section- 

 of a very young embryo; B, C, surface view and optical section of an older one,, 

 X600; C, D, longitudinal sections of the apex of older embryos, X600; en^ endd- 

 thecium; am, amphitbecium. 



