THE ASPERGILLUS WENTII GROUP 



245 



long by 15m, with walls up to 1.5m in thickness, appearing smooth in liquid 

 mounts, but showing rudimentary markings or pits when examined dry. 

 Vesicles globose to subglobose, up to 40 to 50m in diameter, with walls 

 about 2m in thickness, and showing pores where sterigmata are attached. 

 Sterigmata in two series, primary 7 to 9m or even 12m by 3 to 4m, secondary 



A 



B 



Fig. 66. Aspergillus alliaceus. A, Heavy sclerotium-producing strain, NRRL 



(strain NRRL No. 318) showing tendency to split into divergent columns, X 18 



7 to 8m by 2m- Conidia elliptical to globose, yellowish, 2.5 or 3m in diameter. 

 Perithecia not found. Sclerotia often very abundant (fig. 66 C) at first 

 white but quickly becoming black or nearly so, in many strains dominating 

 the character of the colony. 



Strains compared include NRRL Xo. 315 (Thorn No. 4656) from a dead 



