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 



Cut leaf Vetx 



Funaria hygromelrica. 

 Moss stem cut vertically 

 to show (a) archej?onia 

 alone, (b) leaf blades. 



Bryum binum. Stem cut vertically. 



the union, each egg-cell be- 

 gins to divide, forming new 

 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 

 base and is 

 carried up as 

 a veil on the 



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 

 other is raising the 

 archegonium wall 

 as a calyptra. 



Phascum cuspidatunt. Stem cut ver- 

 tically to show , (ar ) archegonia on one 

 branch and (on) antheridia nearby on 

 another branch; (p) paraphyses and 

 (b) leaf blades. 



