424 



A MANUAL OP THE PENICILLIA 



with walls frequently roughened; metulae borne at different levels within 

 the penicillus, usually 8.0 to 12.0m by 2.5 to 3.0^; sterigmata ranging from 

 10 to 13m hy 2.2 to 2.5m, with metulae and sterigmata often not clearh' 

 differentiated and commonly arising at the same level, usually borne in 

 small clusters; conidia elliptical when first formed, becoming globose or 



Fig. 110. Penicillium camemberti series. A and B, Two-week old colonies of 

 P . caseicoluniBainier, NRRL874, on Czapekand malt agars. Cand D, P. camemberti 

 Thorn, NRRL877, with substrata and age as in the preceding. 



subglobose in age (fig. 109CO, smooth-walled, ranging from 4.0 to 5.0m 

 by 3.3 to 4.5m. 



Colonies on steep agar, cottony, white, azonate, 2 to 3 mm. deep in 

 central area attaining a diameter of 3.0 to 3.5 cm. in two weeks; exudate 

 clear, abundant as droplets partially buried in the colony; sporulating 



