LICHENOLOGY OF ICELAND 127 



CALOPLACACE.E. 



(Caloplaca). 



Caloplaca. 



C. aurantiaca Lightf. (D. B., p. 208, Placodium). 



G. Brit. 



C. cerina (Ehrh.) Th. Fr. (D. B., p. 207, Placodium cer. f. stilli- 



cidiorum). 



Greenland. G. Brit. 



C. citrina Adi. (D. B., p. 208, Placodium). 

 (1. Brit. 



C. diphyes Nyl. (I). B., p. 208, Placodium). 

 Not found in Greenland. 



C. elegans (Link) Th. Fr. (D. B., p. 205, Xanthoria). 

 Greenland. G. Brit. 



C. ferruginea (Huds.) Th. Fr. v. obscura Th. Fr. (D. B., p. 208, 



Placodium). 



Greenland. G. Brit. 



C. Jungermanniae (Vahl) Th. Fr. (D. B., p. 208, Placodium Jung. 



and var. leucoraeum). 

 Greenland. 



C. murorum Hoffm. with var. miniatum Ach. and obliteratum Pers. 

 (D. B., p. 207, Placodium). 



C. nivale Koerb. (D. B., p. 208, Placodium). 

 G. Brit. 



C. obscurella Lahm. (D. B., p. 208, Placodium). 

 Not found in Greenland. 



C. pyracea (Ach.) Th. Fr. (D. B., p. 208, Placodium). 

 Greenland. G. Brit. 



C. tetraspora Nyl. (D. B., p. 208, Placodium). 

 Not found in Greenland. 



C. vitellina (Ehrh.) Th. Fr. (D. B., p. 207, Placodium). 

 Greenland. G. Brit. 



THELOSCHISTACE.E. 



(Xanthoria). 



Xanthoria. 



X. lychnea (Ach.) Th. Fr. (D. B., p. 205, X. par. v. lychnea). 

 Greenland. G. Brit. 



X. parietina L. (D. B., p. 205). 

 Greenland. G. Brit. 



