Leafy Mosses 



THE DEVELOPMENT OF A SPORE-CASE 



(Sporogonium) 



After the union of the sperm-cell of the antheridia, with the 

 egg-cell of the archegonium, a division of the egg-cell takes place, 



Vertical section through male flower-cluster, (a) Young Vertical section through 



ntheridium. (6) Mature antheridium. (c) Paraphysis. female flower-cluster, (a) Ar- 



(d) Leaf -vein, (e) Leaf -blade. chegonium. (6) Leaf-blade. " 



Funaria hygrometrica. Dioicous inflorescence. (See page 48). 



which brings about a multiplication of cells, the ultimate result of 

 which is a mass of tissue called a sporogonium, which is the 



Sphterangtum muticum. Sporogonium 

 with wall partly removed to show colum- 

 ella with spores attached. 



Funaria kygrometrica. Summit of spore* 

 gonium to show the annulus rolling back 

 from the teeth. 



fruit of the moss made up of the lid, spore-case, teeth, annulus, 

 spores, and columella. (See diagrams on pages 48 and 53.) 



49 



