468 



A MANUAL OF THE PENICILLIA 



of a mixture of simple conidiophores and fascicles of conidiophores, with 

 simple conidiophores usually predominating (fig. 121A). In the series 

 typified by Penicillium granulatum Bainier, however, fascicles of conidio- 

 phores are very prominent and often dominate the colony appearance 



f\:"i^^':iM*9-lL.. ..Mf*. .- .^ 



Fig. 121. The Fasciculata. A-D, Species showing progressive stages in fascicula- 

 tion from lightly tufted to strongly coremiform. A, Penicillium cyclopium Westling, 

 NRRL 1899, X 5. B, P. italicum Wehmer, NRRL 1293, X 10. C, P. granulatum 

 Bainier, NRRL 2036, X 5. D, P. daviforme Bainier, NRRL 2149, X 3. 



(fig. 121C), although single conidiophores are also regularly found. In the 

 series typified by P. daviforme Bainier, conidiophores are almost entirely 

 aggregated into large coremia (fig. 121D), often ranging from 3 to 5 mm. 

 or more high by 1 mm. or more wide. These latter organisms have often 

 been ^referred to the genus Coremium. Among the forms where simple 

 conidiophores generally predominate, separation into series is based pri- 

 marily upon growth and color characteristics, with emphasis in some cases 

 placed upon their natural habitat where this is more or less diagnostic. 



