THE WHITE-SPORED AGARICS 



163 



The plant usually grows in hollow stumps or logs, and in this case the stem 

 is always lateral and the plant grows very much as does the P. ostreatus, except 

 that they are not imbricated. Occasionally the plant is found on the bottom of a 

 hollow log and in that case the cap is central and considerably depressed in the 

 center. I have never seen it growing except in a hollow stump or log. Its manner 

 of growth and its delicate shape of white will serve to identify it. It is found 

 from August to November. 



Figure 126. Pleurotus abscondens. Entire plant white. 



Pleurotus circinatus. Fr. 



Circinatus means to make round, referring to the shape of the pileus. 



The pileus is two to three inches broad, white, plane, orbicular, convex at first, 

 even, covered over with silky-pruinose lustre. 



The gills are adnate-decurrent, rather crowded, quite broad, white. 



The stem is equal, smooth, one to two inches long, stuffed, central or slightly 

 eccentric, rooted at the base. 



The form of these plants is quite constant and the round white caps will at 



