1898-1902. No. 21.] LICHENS. 29 



Pertusuria D.C. 



Pertusaria carneopallida (NYL.) ANZI. - DARBISH. Pert. p. 607. - 

 Greenl., Icel. On bark. 



Pertusaria communis (L.) D.G. DARBISH. Pert. p. 598. Icel. - 

 On bark and wood, rarely on stone. 



Pertusaria coriacea TH. FR. TH. FR. Scand. p. 318. Am.,Spitsb., 

 Icel. Over moss and earth 



Pertusaria dactylina (AcH.) NYL. TH. FR. Scand. p. 310. Greenl., 

 Icel. Over moss and dead plants. - - E. P. S. N. Greenland (3) ; King 

 Oscar Land, Goosefjord (39, 41, 46). 



Pertusaria determinanda DARBISH. E. P. S. N. King Oscar Land, 

 Goosefjord (48). On stone. 



Pertusaria panyrga (Acii.) TH. FR. - TH. FR. Scand. p. 308. 

 Greenl. - - Over dead plants and earth. E. P. S. N. Ellesmere Land, 

 Frarnsharbour (17); King Oscar Land, Harbourfjord (24), Goosefjord (41). 



Pertusaria rhodoleuca TH. FR. TH. FR. Scand. p. 306. Icel. 

 On stone. 



Pertusaria Sommerfeltii (LK.) NYL. -- DARBISH. Pert. p. 607. - 

 Greenl. Over bark. 



Pertusaria subobducens NYL. BRANTH Groenl. p. 756. Greenl. 

 Over moss, earth and dead plants. E. P. S. N. Ellesmere Land, Cape 

 Viele (10), Framsharbour (17), Bedford Pirn Island (20); North Lincoln 

 (23); King Oscar Land, Harbourfjord (25, 28), Goosefjord (3841, 46, 50, 

 52, 53), Landsend (58), Hyperitodden (60), Braskerudslauen (63); North 

 Kent (64); North Devon (65). 



Pertusaria xanthostoma SMRFT. TH. FR. Scand. p. 306. Icel. 

 Over bark and moss. 



VariceJlaria, NYL. 



Varicellaria rhodocarpa (KRB.) TH. FR. DARBISH. Pert. p. 631. 

 Am. Over earth and moss, rarely rocks. 



Candelsurici MASS. 



Candelaria concolor (DICKS.) TH. FR. TH. FR. Scand. p. 147. 

 Am. Over bark, earth and stone. E. P. S. N. Ellesmere Land, Frams- 

 harbour (17) ; King Oscar Land, Harbourfjord (24), Goosefjord (39). 



