EXPERIMENT STATION BULLETINS. 



585 



TABLE I. — CI^ARACTERISTICS ON DIFFERENT MEDIA. 



Medium 



Fruiting 



Standard nutrient agar 



Dextrose agar 



Celery agar 

 Corn meal agar. 

 Oat meal agar. 



Prune juice agar. 

 Potato plugs. 

 Carrot plugs. 



Celery plugs. 



Beans. 

 Rice. 



Corn. 



Coons' synthetic, 

 (on filter paper) 



Richards' solution. 



Growth good, largely superficial, slight 

 mouse colored tinge. 



Growth abundant, fluffy, largely super- 

 ficial; tough masses of dark myceUum 

 formed over surface with black scle- 

 rotial-iike bodies formed in the sur- 

 face mycelium. 



Growth good, considerable submerged 

 mycelium; aerial mycelium slightly 

 tinged with blue. 



Considerable growth below the surface 

 of the substrate; aerial mycehum 

 very faint blue. 



Mycelium abundant, sometimes filling 

 entire slant in test-tube; black masses 

 of mycelium formed at the edges of 

 cultures. 



Growth moderate, largely aerial, fluffy, 

 white. 



Mycelium abundant, compact, white, 

 old cultm-es form tough black mats 



Very much the same as with potato 

 plugs; mycelium not so compact and 

 slightly bluish. 



Growth moderate, fluffy and white at 

 first, later turns blue. 



Mycelium very abundant, white or 

 slightly tinged with blue. 



Color of rice changed from white to or- 

 ange color; mycelium varying from 

 light blue to black; growth abundant. 



Growth moderate, color mycelial mass 

 light blue. 



Mycelial growth sparse; at first white, 

 later turning dark. 



At first submerged coming to the sur- 

 face very dense masses formed; color 

 varying from white to black. 



Few pycnidia. 

 Pycnidia scarce. 



Pycnidia scarce. 



Pycnidia sometimes 

 numerous in old cul- 

 tures. 



Pycnidia have been 

 found in old cul- 

 tures. 



No pycnidia were 

 found. 



Fruiting not abund- 

 ant. 



Few pycnidia. 



Pycnidia found in 

 great numbers, seat- 

 ed on the surface 

 and visible to the 

 unaided eye. 



No pycnidia observ- 

 ed. 



Pycnidia produced 

 in old cultures. 



Pycnidia produced 

 in old cultures. 



Pycnidia very a- 

 bundant on both 

 sides of filter paper 

 cone. 



No pycnidia 

 observed. 



