I'u.. 107. rtiui:illiuin hrcit-compactum&env^. A ..nJ V;, I'wo-week old colonies of 

 P. brevi-compactum Dierckx, NRRL 862, on Czapek and malt agars. C and D, P. 

 stoloniferum Thorn, NRRL 859, on same substrates, same age. E, Single penicillus 

 of P. brevi-compactum as seen under high-dry objective, X 300. F, Colony margins 

 of P. slolonijerum showing characteristic extension of growth by stolons, X 1-iO. 



409 



