RICHARDS. — DEVELOPMENT OF ^CIDIA. 269 



tion of tbis sporocarp. Hartig* has said that it is probable that the 

 tEcidium is the result of a preceding sexual act, and is therefore a true 

 sporocarp, like the perithecium and apothecium of the Ascomycetes. 

 This is stating the case strongly, but even if the secidium is not the 

 result of a sexual act, it does not preclude the comparison with the 

 sporocarp, for it has been abundantly shown that the sexuality in 

 the formation of the latter is often much reduced among many fungi, 

 the Ascomycetes in particular. 



* Diseases of Trees, Trans. Somerville and Ward, p. 153. 



Crtptogamic Laboratory, Harvard Unitersitt, 

 May, 1895. 



