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A MANUAL OF THE PENICILLIA 



long, apices swollen to form definite vesicles 4.0 to 4.5iu in diameter; peni- 

 cilli strictly monoverticillate with no branched structures observed, bear- 

 ing loose to fairly compact columns up to 100m in length; sterigmata 

 crowded, often incurved, usually 10 to 15 in the verticil, about G to 8m 



Fig. 57. Penicillium chermesinum Biourge, NRRL 2048. A and B, Two-week-old 

 colonies on Czapek and malt, agars. C, Low-power view of colony margin showing 

 conidiophores as short branches from interlacing aerial hyphae, X 100. D, Detail 

 of penicilli; showing also the origin of conidiophores, X 900. 



by 2.0 to 2.0M (fig. 57D); conidia elliptical, smooth, 2.0 to 2.5 by 1.5 to 

 2.0m, appearing faintly green in mass. 



Colonies on steep agar attaining a diameter of 5.5 to 6.0 cm. in 2 weeks, 

 with texture as described on Czapek except even more granular and some- 



