FIG. 74. Plowrigktia morbosa, a fungus with a large, irregularly shaped 

 black stroma in the substance of which numerous perithecia containing 

 spores are immersed, i, portion of a branch of a plum-tree bearing a 

 stroma of the fungus covered with conidia ; 2, portion of a branch with a 

 stroma of older date and bearing perithecia ; 3, conidiophores with 

 conidia near the tip ; 4, ascus containing eight ascospores : by its side is 

 a paraphysis. Figs, i and 2, half nat. size ; the others mag. 



