292 



A MANUAL OF THE PENICILLIA 



ing below the level of metulae common; branches usually 15 to 25m by 2.2 

 to 3.3/1, with dimensions of metulae, sterigmata and conidia as above. 



Colonies on malt agar spreading broadly, attaining a diameter of 6.0 

 to 7.0 cm. in 10 days at room temperature, plane (fig. 79B), with margin 



5)' 



B 



-T^IR 





t / 



f « 



«f 



Fig. 79. Penicillium humuli v. Beyma, NRRL 872. A and B, Two-week-old 

 colonies on Czapek and malt agars. C , Marginal oolony area, X 85. D, Detail of 

 penicilli, X 1000. 



thin and submerged, color as above; no exudate; odor very faint; reverse 

 in cream to light buff shades with zonation apparent; penicilli mostly the 

 complex structures already described with an occasional monoverticillate 

 type present. 



Species description based primarily upon the type strain, NRRL 872. 



