30 OTTO V. DARBISHIRE. [SEC. ARCT. EXP. FRAM 



Xanthoria FR. 



Xanthoria lychnea (Acn.) TH. FR. TH, FR. Scand. p. 146. Am., 

 Green!., Spitsb., Icel. Over rock and wood. E. P. S. N. Greenland (2) ; 

 Ellesmere Land, Fort Juliana (5); King Oscar Land, Harbourfjord (24). 



Xanthoria parietina (L.) ACH. - - TH. FR. Scand. p. 145. Am., 

 Greenl., Spitsb., Icel. Everywhere. E. P. S. N. King Oscar Land, Har- 

 bourfjord (24), Goosefjord (38). 



Placodium D.C. 



Placodium elegans (LINK) NYL. - - TH. FR. Scand. p. 168. Am., 

 Greenl., Spitsb., Icel. On stone and moss. E. P. S. N. Greenland (2); 

 Ellesmereland, Fort Juliana (5), Beitstadsfjord (7), Twinglacier Valley (8); 

 North Lincoln (23); King Oscar Land, Harbourfjord (24, 27, 28), South 

 Cape (34), Bjerneborg (35), Goosefjord (3842, 44, 48, 49), Vendom Kap 

 (55), Graham Island (59), Coalbay (62); North Kent (64); North Devon 

 (66); Cardigan Straits (67); Camp n. 33 (69). 



Placodium miniatum HFFM. TH. FR. Scand. 170. Icel. Over 

 rocks and wood. 



Placodium murorum (HFFM.) D.C. TH. FR. Scand. p. 170. Am., 

 Greenl., Spitsb., Icel. Over moss and stones. E. P. S. N. King Oscar 

 Land, Harbourfjord (28), Goosefjord (38). 



Flacodium splendens DARBISH. -- E. P. S. N. Ellesmereland, Cape 

 Rutherford (14), Cocked Hat Island (18); North Lincoln (23); King Oscar 

 Land, Braskerudslauen (63). Over earth and rarely on stones. 



Blastema MAN. 



Blastema atrocyanescens TH. FR. TH. FR. Scand. p. 395. Am. 

 Over stone. 



Blastema diphyes (NYL.) TH. FR. TH. FR. Scand. p. 395. Greenl., 

 Icel. Over stone. 



Blastenia leucoroea (Acn.) TH. FR. - TH. FR. Scand. p. 392. - 

 Greenl., Icel. Over moss and old wood. E. P. S. N. King Oscar Land, 

 Goosefjord (47). 



Blastenia pleiophora (NYL.) TH. FR. - - TH. FR. Scand. p. 394. - 

 Greenl. Over bark. 



Blastenia tetraspora (NYL.) TH. FR. - - TH. FR. Scand. p. 392. - 

 Greeni., Spitsb., Icel. Over mosses. E. P. S. N. King Oscar Land, 

 Goosefjord (39). 



