V] 



SPHAERIALKS 



167 



frequent lateral anastomoses occur and crj'stals of calcium oxalate, which 



have become separated from the substratum, are found among the filaments. 



Hyphae become massed together to form the stroma which in the 



\cry young stages consists entirely of vegetative filaments densely inter- 



Vig. 124. Xyidi/u Hypo.\ylon ViX'^w, after Tulahiie. 



woven and rising vertical!)' from the surface of the substratum. As the_\- 

 grow the stromata assume their characteristic shape, conidia appear and 

 drojjs of pinkish or }-cllowisli fluid are e.xuded. When these dr)- u]), black 

 dots indicating the position of the ripening perithecia are seen. 



