FIG. 95. Section through cupule of Marchantia, showing wall in which are chloro- 

 phyll-bearing air-chambers with air-pores, and gemmae (a) in various stages of 

 development. DODEL-PORT. 





FIG. 96. Marchantia polymorpha : the lower figure represents a gametophyte bear- 

 ing a mature antheridial branch (d), some young antheridial branches, and also 

 some cupules with toothed margins, in which the gemmae may be seen ; the 

 upper figure represents a partial section through the antheridial disk, and shows 

 antheridia within the antheridial cavities (a, b, c, d, e,f). After KNY. 



