396 



DISEASES OF CULTIVATED PLANTS 



Wholly resupinate, or most frequently reflexed, the free 

 portion projecting from the matrix, often crisped and lobed, 

 coarsely fibrous above, dingy ochraceous ; hymenium smooth, 

 bright ochraceous ; spores elliptical, hyaline. 



It is difficult to suggest preventive measures against a 

 fungus present practically everywhere. When growing on a 



Fig. u; si, n am hirsutum. i, fungus; 2. section of 

 same ; 3, l>.\si<lu bearing spores, highly mag. 



living tree it should be cut away, and the wound coated with 

 tar. 



Hartig, Die Zersetz. </<< ffo/zes, p. 129. 

 W'aici, YV<j//s. Roy. Soc, 1 So, p. 1 rr j; (1898). 



Partridge wood (Stereum Jrusiuiosum t Fries.) is often a 

 pure saprophyte; on the other hand, under certain conditions 

 it assumes the nature of a destructive parasite, attacking 

 various forest trees, more especially the oak. 1 )r. Hartig has 







