14 



the pileus goes on extending horizontally, this 

 membrane becomes detached from the pileus, and 

 hangs down from the stem like a ruffle. This is 

 called the Annulus. 



STEUCTURE OF THE STALK. 

 The hyphse are arranged parallel to each other 

 generally, but single ones run obliquely to the others. 

 The parallel hyphse are branched, each branch 

 usually arising just under a septum. The external 

 ones are narrow and close together. In the middle 

 the arrangement is irregular, and air fills the inter- 

 spaces. In the latest stages vacuoles and crystals of 

 Calcium Oxalate appear. In cross section it will 

 have a parenchymatous appearance. Pits are fre- 

 quently seen in the cross walls, one usually occupying 

 the middle. 



REPEODUCTION. 



The pileus bears on its underside a number of 

 lamelliform projections. A section cut at right angles 

 to the course of the lamella) will exhibit a comb-like 

 appearance. Highly magnified each tooth of the 

 comb shows the following structure : — 



(1) A number of septated hyphae called the Trama. 

 They diverge from the centre to the right, and 

 form: — 



(2) The suh-hymenial layer. From the sub-hymen- 

 ial layer arise short, club-shaped hyphse, 

 densely crowded, and at right angles to the 



