234 A MANUAL OF THE ASPERGILLI 



II. Conidiophores up to 3 mm., rarely 4 mm. long. 

 a.. Sporulation normal. 



Reverse uncolored or slightly olive; drops few or none; primary 

 sterigmata 20 to 40m; mycelium often yellow at first 



A. niger Van Tiegham 

 Reverse orange-brown or purple-brown; drops large, black; pri- 

 mary sterigmata 8 to 25m; mycelium colorless or rarely yellow 



A. Biourgei Mosseray 



Reverse pale reddish-brown; drops very few; heads very small; 



primary sterigmata 15 to 30m; mycelium colorless or sometimes 



rose; sporulation very slow A. Churchii Mosseray 



Reverse golden yellow; drops none; primary sterigmata 20 to 40m; 

 mycelium reddish-yellow at first 



A. luteo-niger (Lutz) Thorn and Church 

 Reverse dark olive-brown; conidiophores up to 1 to 2 mm.; primary 

 sterigmata very variable; vesicles subglobose 



A. anomalus Mosseray 



Reverse cream to brown, spotted slightly, wrinkled with a dark 



band in center, sporulation scattered, pale, conidiophores up to 



4 mm. long A. tubingensis (Schober) Mosseray 



/3. Sporulation abnormal. 



Sporulation absent in patches and in the margin, with a granular 

 appearance, and proliferation of mycelium throughout the co- 



nidial area A. granulatus Mosseray 



Sporulation massed at the thin end of the agar, less dense toward 



the bottom of the tube; mycelium wooly. 

 Mycelium wooly, gray-white or yellowish-gray, carrying on the 

 thin areas numerous simple heads ("fumigatiformes") and some 

 normal heads. Reverse cream, slightly wrinkled 



A. velutinus Mosseray 

 Mycelium less wooly, white; conidiophores 1 to 3 mm. long, very 

 abundant at the thin end of the agar, the remainder sterile. Re- 

 verse much wrinkled, cream. .... A . ficuum (Reich.) Hennings 

 III. Conidiophores tall, up to 1 cm.; sporulation scanty, mostly toward the 

 thin end of the agar. 



Heads large, splitting into divergent columns; conidiophores up to 

 1 cm. by 30m; primary sterigmata up to 100m; reverse cream or slightly 



rose A . elalior Mosseray. 



Heads small, mycelium gray-rose; conidiophores rarely up to 1 cm., 

 more often 2 to 6 mm.; very numerous little "fumigatiform" heads, on 

 short conidiophores at the surface; reverse clear rose or salmon 



A. pseudo-elatior Mosseray 



IV. Conidiophores very irregular from less than 1 mm. to 3 mm. with much 



larger heads; reverse clear reddish-brown; mycelium yellow at first 



then dark brownish-red; sporulation delayed. A. pseudo-niger Mosseray 



b. Colonies not purple-brown but clear brown; morphology of A. niger; conidia 



mostly smooth or nearly so. 



I. Colonies clear brown or sepia; conidiophores up to 1 mm. ; reverse olive or 

 lighter; with reticulated wrinkles; vesicles 20 to 50m; primary sterig- 

 mata 12 to 50m; conidia smooth A. olivaceo-fuscus Mosseray 



