272 



Mycologia 



Beef peptone agar, colonies remain small, surface velvety with 

 conMial fructifications arising from immersed hyphae. 



Steamed rice, good growth, numerous white, cream, pinkish 

 or yellow perithecia within 30 days. 



Fifteen per cent, gelatin, sparse growth, not liquidified in 30 

 days at 28 0 C. 



Milk, very little, if any, growth. 



Czapeck's solution agar (nitrogen omitted) to which the fol- 

 lowing substances were added : 



Saccharose 3 per cent., poor growth, no perithecia. 



Glucose, 3 per cent., poor growth, no perithecia. 



Maltose, 3 per cent., good growth, many sulphur colored 

 perithecia at 14 days, reverse faint cream. 



Lactose, 3 per cent., very poor growth, no perithecia. 



Galactose, 3 per cent., good growth of rapidly spreading colo- 

 nies, few sulphur colored perithecia at 14 days. 



Glycerin, 3 per cent., good growth, many cream-colored peri- 

 thecia at 14 days, reverse white and cream. 



Armour's peptone, 3 per cent., poor growth, no perithecia, re- 

 verse cream. 



Armour's peptone, 3 per cent., and saccharose, 3 per cent., 

 vigorous growth forming a dense mat of mycelium, few peri- 

 thecia, surface floccose and gray with conidial fructifications, re- 

 verse dark cream. 



Asparagin, poor growth, saccharose added, very good growth, 

 many small perithecia. 



Urea, no growth. 



Potato starch, fairly good growth, many small perithecia. 

 colonies surrounded by a wide circle of clear media from which 

 the starch has been dissolved by an enzyme. 



Butterfat, very poor growth. 



Temperature relation : On bean- or potato-saccharose agar 

 growth is slow at 20 0 C, good at 28, optimum at 33-35, good 

 at 40. 



Color : White is the predominating surface color ; however, 

 when conidia form in profusion, as infrequently accurs in small 

 areas, or over the entire surface when certain substances are 



