IiASIDIA AND ASCI 



23 



Fig. 3. — Same group of fruit-bodies of Plcurotus ostreatux as shown in Fig. 2, 

 photographed ten days later at maturity. The tops of the pilei have now 

 become flattened. The thin gills, separated by interlamellar spaces, have 

 developed along vertical planes, and are of various lengths, so as to be very 

 compactly arranged. The pills on the stipe of the lowest fruit-body have 

 been damaged by a slug. Photographed at Sutton Park, Warwickshire, by 

 J. E. Titley. About f natural size. 



