446 



THE FUNGI ^^■H1CH CAUSE PLANT DISEASE 



L. conchatus (Bui.) Schr. is found on birch, poplar, aspen. 

 L. lepideus '^^ Fr. on pine, birch, etc. 



Fig. 017. — Lentinus lepideus. After Clements. 



Panus Fries (p. 445) 



This genus is very close to Lentinus from which it is separated 

 by the character of the gills which have an entire edge. 



P. stipicus (Bui.) Fr. is perhaps parasitic occasionally.™ 



Marasmius Fries (p. 445) 



Sporophore tough, withering, often reviving in renewed moisture; 

 pileus, with few exceptions, regular, thin, leathery, without a veil, 

 sharply differentiated from the stipe, rarely sessile or laterally 

 attached; stipe tough, cartilaginous or horny, without an annulus; 

 gills tough, thin, leathery or membranous, entire margined. 



Some four hundred fifty species of wide distribution, but chiefly 

 small tropical fungi. 



