Clark : A new Volutella 



619 



Tlie growth on plate cultures was quite characteristic. The 

 center of the colony produced a bunch of fluffy aerial hyphae 

 Avhich was surrounded by a compact ring of rich lemon yellow 

 spore masses, beyond which the mycelium grew out in radiating 

 lines bearing innumerable sporophores and an occasional sporo- 

 dochium. That this fungus is quite scnsitiv^e to changes of tem- 



plate culture of V, 7}idlea on sugar beet agar. .Cirown at first in thermostat at 

 2S^ C, l)ut afterwards on shelf in cuUure room. The fluffy hyi)hae in the center of the 

 colonies is obscured l)y underlying spore masses. 



■ 



perature was shown by the concentric markings of colonies in 

 Petrie dishes kept in the laboratory where the temperature varied 

 frequently and considerably during the development of the colonies. 



1 



Volutella mellea sp. nov. 



Sporodochia substipate, irregularly hemispherical, at first white, 

 then honey-colored, becoming brown in age. ioo-150/i in diam- 

 eter, stratosc; setae ic-60, arising irregularly from baseof sporo- 

 dochium and in many cases passing upwards through it, hyaline, 

 continuous, slightly curved, ' ' -. - - 



tapering, very siig 



shYditly roughened 



