1898-1902. No. 21-] LICHENS. 15 



Arthonia ACH. 



Arthonia fusca MASS. TH. FR. Spils. p. 46. Spitsb. On stone. 

 Arthonia excentrica TH. FR. ALMQ. Arth. Scand. p. 55. Spitsb. 



- Over moss. 



Arthonia trabinella TH. FR. ALMQ. Arth. Scand. p. 30. Greenl. 



- Corticolous. 



Arthonia proximella NYL. TH. FR. Arct. 205. Greenl., Icel. - 

 Corticolous. 



Arthonia punctiformis ACH. ALMQ. Arlh. Scand. p. 42. Icel. 

 Corticolous. 



Xylographa FR. 



Xylographa parallela ACH. -- TH. FR. Arct. p. 242. Greenl. 

 Old wood. 



Lecideales. 

 Rhexophiale TH. FR. 



Rhexophiale coronata TH. FR. TH. FR. Arct. p. 205. Greenl., 

 Spitsb. Over earth and moss. 



Gyalecta ACH. 



Gyalecta cupularis EHRH. -- TH. FR. Arcl. p. 140. Icel. Over 

 rocks and moss. 



Racodium E. FR. 



Racodium rupestre PERS. ZAHLBR. Flecht. p. 128. Greenl., Icel. 

 Over rocks. 



Secoh'ga NORM. 



Secoliga foveolaris (Acn.) KBR. -- TH. FR. Arct. p. 138. Icel. - 

 Over moss and earth. 



Secoliga Peziza (MONT.) ANZI. -- TH. FR. E. Pol. Exp. p. 367. Am. 



- Over turfy earth. 



Lecidea ACH. 



Lecidea aglaea SMRFT. TH. FR. Scand. p. 534. Greenl., Spitsb., 

 Icel. E. P. S. N. : King Oscar Land, Goosefjord (39). On stone. 



Lecidea albocaerulescens(WvLF.) SCHAER. TH. FR. Scand. p. 508. 

 Greenl., Spitsb., Icel. On stone. 



Lecidea alpestris SMRFT. TH. FR. Scand. p. 536. Am., Greenl., 

 Spitsb., Icel, Over earth. 



