Fig. 30. 



Fig. 30. — Above, Species 106. — 'Pleurotus ostreatus. Cap 

 2 to 5 inches broad; white, ashy or yellowish. 



Photo by author. Description on page 237. 



Below, Species io8. — Pleurotus ulmarius. Cap 3 to 5 

 inches broad; white, whitish or yellowish. 



From Prof. C. H. Kauffman's Agaricacece of Michigan. Description 

 on page 240. 



