LICHENOLOGY OF ICELAND 111 



I. PYRENOCARPEjE. 



VERRUCARIACE.E. 



(Microglaena, Polyblastia, Staurothele, Verrucaria.) 



Microglaena. 



M. sphinctrinoides Nyl. (D. B., p. 220, under Pyrenula) 1 . 

 This species is wanting in Greenland. 



Polyblastia. 



P. hyperborea Th. Fi. 



On Basalt, Seydisfjord, O. Galloe, 1913. New to Iceland. 



P. Henscheliana Koerb. (D. B., p. 220, Pyrenula). 

 Absent from Greenland. Great Britain (Crombie) 2 . 



Staurothele. 



S. clopima Wnbg. (D. B., p. 220, Pyrenula). 

 G. Brit. 



Verrucaria. 



V. margacea Wnbg. (D. B., p. 219, with var. aethiobola Wnbg.). 

 Absent from Greenland. G. Brit. 



V. maura Wnbg. (D. B., p. 219). 

 Greenland. G. Brit. 



V. mucosa Wnbg. (D. B., p. 219). 

 Greenland. G. Brit. 



V. nigrescens Pers. (D. B., p. 219). 

 Absent from Greenland. G. Brit. 



V. rupestris Schrad. (D. B., p. 219). 

 Greenland. G. Brit. 



DERMATOCARPACE-E. 



(Dermatocarpon.) 



Dermatocarpon. 



D. cinereum Pers. (D. B., p. 219, Verrucaria). 

 Not found in Greenland. G. Brit. 



D. hepaticum Ach. (D. B., p. 219). 

 Greenland. G. Brit. 



D. miniatum L. />'. complicatum Sw. (D. B., p. 219). 

 Greenland. G. Brit. 



1 Deichmann Branth : Lichenes Islandise, Botanisk Tidsskrift. 1903, vol. 25. 



2 Crombie: British Lichens, 18941911. 



