170 FOKESTBY WORK 



the underside of leaves. Bright red in colour, changing 

 to brown. 



Dryophanta Scutellaris. — The cherry gall, about the 

 size of a small cherry, red and green in colour. 



Aphilothrix Fecundatrix. — The hop gall, resembles a 

 hop flower. Inside is a second gall shaped exactly hke 

 an acorn. 



Neuroterus Numismatis. — The button gall. Circular, 

 with deep depression in centre. 



Neuroterus Lenticularis. — The spangle gall. Circular, 

 raised in centre. 



Neuroterus Fumipennis. — Smaller, but of a brighter red 

 than the spangle gall, not raised in centre. 

 Fungi. 



Polyporus Sulphureus {Bed Rot). — Infection takes place 

 through a branch wound, causing the wood to become 

 brown and dry. The sporophores are soft yellow beneath 

 and reddish-yellow on the upper surface. This fungus 

 also attacks Willow, Poplar, Alder, Acacia, and other 

 hardwoods. 



Polyporus Igniarius {White Rot). — Infection takes place 

 through wounds on branches. The decaying wood is 

 first turned a deep brown colour, and then yellowish- 

 white. The sporophores are hard, bracket-shaped, and 

 often 12 inches across. Attacks most broad-leaved trees. 



Polyporus Fomeniarius. — Attacks Oak, but is chiefl}'- 

 found in Beech. 



