CATAXOGTJE OF MK. J. N. WINCh's LICHENS. 319 



Gelatina hymenia, bright blue with iodine, but 

 apices of paraphyses remain untinged, and retain 

 their fuscescent colour. 



158 — 161. Lecidea ltjeida (Swartz). Four specimens. Two 

 from Teesdale, and two without locality. 



162. 1j'e,cid'e&. Yusco-A.T:'RA=:Lecidea crustulaia [Ach.) Teesdale. 



163-164. Lecidea fumosa = Lecidea crustulata (Ach.) No lo- 

 cality. Also a third specimen, the same. 



165. JsE.cu)-EA. Qjjk-D-Ricoi.o^^= Lecidea decolorans (YW..) Gates- 

 head Pell. 



166-167. Lecidea decolokans (Flk.) Two specimens, from 

 Teesdale, in Mr. Thornhill's handwriting. 



168. Lecidea queenea (Dicks.) On trees, near Newcastle, etc. 

 No trees near Newcastle bear this now. The smoke 

 has obliterated it long ago. 



169-170. Lecidea sanguis ahia (L.) Two specimens, from Tees- 

 dale. 



Mr. Harriman says, The name of this lichen is 

 given it because of a ' disease ' it has, in common 

 with some other species; and the disease "is not 

 confined to the apothecia only, the whole inside of 

 the crust is frequently diseased, and becomes crim- 

 son." 



One can hardly suppress a smile at this disease 

 theory with regard to lichens. "We have seen 

 thousands, and never saw one diseased. The crim- 

 son colour referred to in this species is simply the 

 rich quantity of dye matter it contains, and is 

 really a sign of healthy growth. 



171. Lecidea SABUioEtrM = Lecidea sanguineo-atra (Ach. ) Egle- 



stone. 



This specimen has amongst the paraphyses, distinctly, 

 the cserulescent granules spoken .of by Th. M. Pries. 

 L. Scand., p. 436. 



172. TEEEiGENA = Lecidea fusctt (Schser.) No locality. 



