n] 



POLYP ORUS SULPHUREUS. 



165 



One of the commonest of these is Polypoms sul- 

 phureus (Fig. 17), which does great injury to all kinds 

 of standing timber, especially the oak, poplar, willow, 

 hazel, pear, larch, and others. It is probably well 



■"-^^ . ) 



Fig 17 — Polyporia suiphuri.Hi portion of tht fungii'!. sprmgiug from i piece of Lj.iT> 

 (ALftei Hartig ) 



known to most foresters, as its fructification projects 

 horizontally from the diseased trunks as tiers of 

 bracket-shaped bodies of a cheese-like consistency : 

 bright yellow below, where the numerous minute pores 

 are, and orange or somewhat vermilion above, giving 



