﻿332 



Halsted : Mvcological Notes. 



is altogether more satisfactory because it can be easily cultivated 

 for weeks in the laboratory. 



Witches Broom upon Asparagus. — The "witches broom" of 

 the cedar caused by species of Gymnosporangium and of the 



Fig. 2. 



oi 



cherry by Exoascus cerasi (Fl.) have received their full share 

 attention in works upon fungi ; but the writer fails to note any 

 mention of a similar growth upon asparagus. 



