CABPOPHJTA. 185 



ceeding beauty, but their structure and their mode of life 

 are in some respects very wonderful. They abound almost 

 everywhere — on tree-trunks, rocks, old roofs, and in many 



Fig. 106. Fig. 107. 



Fig. 106.— Diagrammatic vertical section of a Cup-fungus, showing posi- 

 tion of the spore-sacs. 



FlQ. 107.— A few spore-sacs of a Cup-fungus (Peziza oonvexula). In vari- 

 ous stages of development, a, youngest, to /, oldest. The slender fila- 

 ments (paraphyses) belong to the sterile tissue. Magnified 550 times. 



regions upon the ground. They are for the most part of a 

 greenish-gray color, and hence are often called Gray 

 Mosses. Other colors, as black, purple, yellow, and white, 

 are also common. 



