MASSEE AND CROSSLAND : FUNGUS FLORA OF YORKSHIRE. 149 



1022. Polypopus salignus Fr. 



S.W. — " On the root of a fallen poplar at Copley Hall, near 

 Hx. 1788 " (Bolton, Tab. 78). 



N.E. — Scarboro', on willow. Mulgrave (F.F., 1900). 



1023. Polyporus spongia Fr. 



N.E. — Castle Howard and Welham Park (F.F., '92). 



1024. Polyporus dpyadeus Fr. 



S.W. — On stumps at Rastrick and Almondbury (Hud. Bot. 

 Soc). Stainboro' (F.F., '97). 



Mid W.— Studley Royal (F.F., '81). North Deighton ; 

 Bolton Bridge ; and Leeds District (Lees' FL). 



N.E. — Scarboro', at the base of living oak. 



One of the largest of the PolyporecE, notwithstanding being 

 an annual. Drops of water are constantly being exuded from 

 the growing margin of the pileus 



1025. Polyporus hispidus Fr. 



S.W. — " Near Bradford on one of the trunks of a remark- 

 able tree called the Four-Ashes, Nov. 1791" (Bolton, Tab. 161). 



Common on the trunks of living trees, chiefly ash. 

 Distribution general. A very destructive parasite. The 

 hymenium exudes water, which drops away in considerable 

 quantities. Every part of the fungus contains a considerable 

 amount of a yellow substance that has been named " fungus 

 gamboge " by Zopf. When extracted by alcohol it produces 

 a beautiful yellow colour. 



1026. Polyporus cuticularis Fr. 



Mid W.^ — Hawksworth Springs (Lees' FL). 



N.E. — Scarboro'. Somewhat resembling P. hispidus, but 

 differing, among other points, in the absence of the yellow 

 colouring matter. 



1027. Polyporus quercinus Pers. 



N.E. — Castle Howard (F.F., '92). On dead oak stumps. 



1028. Polyporus crispus Fr. 



N.E. — Rievaulx (F.F., '03). On old stumps. 



1029. Polyporus nidulans Fr. 

 S.W.— Sutton (F.F., '99). On fallen trunks. 

 N.E. — Helmsley (F.F., '03). On fallen branches. 



Bot. O.-L 



