Typical conidial structure of p. woz'rt- Typical penicillus of NRRL 



turn NRRL 832. From Raper and 1951- From Raper and Alexander 



Alexander (764) 



(764) 



P. citrinum. From Biourge (56) P. chrysogenum. From Biourge (56) 



A. clavatus. From Wehmer (9B3a) A. jumigatiis. From Wehmer (983a) 

 Figure 12. Some typical fungi that produce antibiotic substance^s. 



