278 A MANUAL OF THE ASPERGILLI 



the entire surface. Sterigmata in two series: primary 10 to 20 or even 30m 

 in larger heads by 2 to 4 or 7 m at the tips; secondary 10 by 2 to 

 2.5/x. Conidia 2.5 to 3m by 3 to 3.5/* to almost globose, very nearly colorless 

 in mounts, smooth, thin-walled. Sclerotia white to brick red, up to 500m 

 in diameter (fig. 74 B). 



The original culture as described by Bainier in 1880 was not preserved. 

 Neither was that of Sartory in 1910. However, cultures of organisms vary- 

 ing about as here described and complying fairly closely with Bainier's 

 description are not infrequently encountered from widely separated regions. 



Aspergillus sachari Chaudhuri and Sachar, in Ann. Myc. 32: 95. 1934. 



This organism was placed by the describers near ^4. quercinus on the basis of the 

 colors of the head and sclerotia. They ignored the colorless, smooth conidiophores 

 which, if correctly observed, would make their placing untenable. It is left here 

 arbitrarily until rediscovered and its characters verified. Compare: A. candidus 

 group. 



Species characterization based upon the original description follows: 



Colonies on Czapek's solution agar naphthalene yellow, (Ridgway, PI. XVI. 23, 

 yellow, f.) more or less floccose; reverse colorless at first then in yellow shades. Scle- 

 rotia scattered through the colony, quickly developed, hard, white through yellow 

 shades to cinnamon, up to 2 mm. in long axis with a depression in the center. Heads 

 abundant, radiate, 50 to 85m in diameter, or somewhat columnar in age up to 160 by 

 100m. Conidiophores 700 to 9C0m by about 8m with smooth colorless walls, about 1.5m 

 thick; vesicles globose, 20 to 30m in diameter; sterigmata in two series, covering the 

 whole vesicle, radiate; primary 5.4 by 2m, secondary 7.2 by 1.8m, conidia colorless, 

 smooth, globose, 2 to 2.7m in diameter. Found in alkaline soil. 



Aspergillus sclerotiorum Huber, in Phytopathology 23 (3): 

 306-8, Fig. I. 1933. 



Colonies on Czapek's solution agar rather slow growing, forming a smooth 

 mycelial layer irregularly overgrown with loose tufts of sterile hyphae within 

 which numerous sclerotia develop and often dominate the colony appear- 

 ance (fig. 74 E), white to shades of yellowish or ochraceous; reverse cream. 

 Conidial heads given as sulphur yellow by Huber, but in our cultures found 

 in ochraceous shades such as cream-buff (Ridgway, PI. XXX), mostly 

 appearing as columnar masses of conidia up to 250m long, sometimes 

 splitting, 60 to 70m at the base and up to 125m at the apex. Conidiophores 

 with walls yellow and pitted, commonly 200 to 400m long by 7 to 10m in 

 diameter, but varying from very short, 50m in length, to occasional groups 

 up to 1200m; in old cultures, arising as branches from loose aerial hyphae. 

 Vesicles subglobose, 15 to 20m in long axis. Sterigmata in two series, pri- 

 mary usually 8 to 9m, occasionally much more but not above 20m long by 3.5 

 to 4.5m in diameter, secondary 8 to 9m by 2m- Conidia smooth, mostly 2 

 to 2.5m- Sclerotia abundant (fig. 74 F), beginning to appear within 3 days, 

 white to cream or pink, up to 1.5 mm. in diameter, well scattered over the 



