162 



BOTANY. 



the size and form of tie spore-fruit. Some of the filaments 

 of the spore-fruit become enlarged into sacs in which spores 

 are developed (Fig. 88), while the others make up the sterile 



Fio. 87. 



Fig. 87.— Diagrammatic vertical section of a Cup-fungus, sliowing position of 

 the spore-sacs. 



Fig. 88.— a few spore-sacs of a Cup-fungus (Peziza convexula), in various stages 

 of development, a, youngest, to/, oldest. The slender filaments (paraphyses) 

 belong to the sterile tissue. Magnified 550 times. 



or protective tissue. The spore-sacs grow so that all reach 

 the same height, and make up the inner surface of the cup 

 (Fig. 87). 



