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



Arthonia ACH. 



Arthonia fusca MASS. TH. FR. Spits, 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. 



- Gorticolous. 



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

 Corticolous. 



Arthonia pimctiformis ACH. ALMQ. Arth. 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. 



Secoliga 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 (WULF.) 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. 



