BIVERTICILLATA-SYMMETRICA 



575 



Fig. 145. Penicillium dnponli Gr. and Maub. emend. Emerson. A and B, penicilli, 

 indicating the irregularities encountered. C, Ascospores remaining in original posi- 

 tions after early disappearance of ascus wall. D, Mature ascospores in surface view 

 showing characteristic equatorial furrow and ridges. E, Ascospores in optical sec- 

 tion. (Camera lucida drawings by Ralph Emerson.) 



ascospores generally lenticular, 3.5-5.0/x by 2.5-3.5m, usually with a quite 

 well defined equatorial furrow flanked by low, smooth, or somewhat jagged 

 ridges, with convex surfaces smooth or showing occasional ridges and ir- 



