BIVERTICILLATA -SYMMETRICA 



611 



12 to 14 days, in some strains approximating the colonies on Czapek in 

 texture and pattern but usually somewhat deeper and showing an increased 

 reddish coloration, often in vinaceous fawn shades (R., PI. XL), in others 



Fig. 158. Penicillium duclauxi Delacroi.x, XRRL 2020. A and B, Ten-da3--old 

 colonies on Czapek and steep agar, respectively. C, Coremia showing detail of struc- 

 ture, X 55. D, Enlarged view of penicilli, X 550. 



consisting of a compact basal felt from which coremia 2 to 3 mm. high de- 

 velop in a dense stand, coremia heavily sporing over the upper one-half with 

 stalks appearing somewhat yellowish, colony surface in yellow-green shades 



