556 A ]VLA.NUAL OF THE PENICILLIA 



The production of an antibiotic, unidentified but probably representing 

 claviformin, by P. claviforme was reported by Wilkins and Harris (1945). 

 Lochhead, Chase, and Landerkin (1946) reported the production of clavi- 

 formin by soil Penicillia (unidentified as to species) and described methods 

 for the assay and extraction of the antibiotic. 



Penicillium silvaticum (synonym of P. claviforme) is occasionally included 

 among the soil fungi reported by different authors. No particular sig- 

 nificance has been attached to its presence. 



No biochemical studies have been reported for Penicillium clavigerum 

 Demelius. 



