Leafy Mosses 



The sperm-cells which develop in the antheridia are tailed and 

 swim in water to an archegonium which contains an egg-cell. 



The sperm-cells pass down the necks of the 

 archegonia, unite with the egg-cells, and after 



Vein 



Stfifn 



Cttt leaf 



Bryum binum. Stem cut vertically. 



Summit of a stem 

 with two perfect 

 sporogonia and five 

 withered antheri- 

 dia. One sporogo- 

 nium i s entirely 

 within the arche- 

 gonium wall . the 



as a calyptra. 



Funaria hygromelrica. 



Moss stem cut vertically 

 to show (a) archegonia 

 alone, (6) leaf blades. 



the union, each egg-cell be- other is raising the 

 gins to divide, forming new archegonium wail 

 cells until a spor- 

 ogonium is com- 

 pleted. 



As the spor- 

 ogonium, still 

 within the 

 archegonium 

 wall, grows up- 

 ward, the wall 

 of the archego- 

 nium is torn 

 away at the 



Phascum ciispidatum. Stem cut ver- 



baSC and IS tically to show (ar) archegonia on one 

 Carried UP as branch and (an) antheridia nearby on 



another branch' (p) paraphyses and 



a veil on the (6) i ea f blades. 



