ASYMMETRICA-DI VARl CATA 



331 



Penidllium melinii Thom, in The Penicillia, p. 273, 1930. 



Colonies on Czapek's solution agar growing rather slowly, attaining a 

 diameter of 2 to 3 cm. in 12 to 14 days at room temperature, velvety, 

 close-textured, consisting of a tough basal felt bearing abundant conidial 

 structures in most strains, strongly wrinkled in radiate pattern with cen- 



FiG. 89. Penicillium melinii Thom, NRRL 8 IS. A, B, and C, Two-week-old col- 

 onies on Czapek, malt, and steep agars, respectively; note the very abundant (ma- 

 roon) exudate on Czapek and its absence from other colonies. D, Detail of penicilli 

 showing characteristic roughened conidiophores and rough, globose conidia, X 1000. 



tral to subcentral areas generally raised (fig. 89A), growing margin narrow, 

 white, shading quickly to yellow-green shades near gnaphalium to pea 

 green (Ridgway, PI. XLVII) becoming gray-green to deep grayish olive 

 (R., PI. XLVI) in age; odor moldy, not pronounced; exudate lacking in 

 some strains to very abundant in others (fig. 89A), through orange-yellow 

 to deep brown sliades near russet (R,, PI. XV); reverse generally in the 



