356 



THE AMERICAN MONTHLY 



[Dec 



the length of the conidiophore as .5mm., Schroter, 1 

 mm., while Wehmer merely states that they vary in 

 length. They become much enlarged in old cultures, the 



walls become very much thickened and also roughened. 



In young growths the sterigmata are short and regu- 

 lar, and vary from a few in number to sufficient to com- 



pletely cover the spherical head; but in older growths, 

 especially when submerged, they become septate, some- 



