46 OTTO V. DAKBISHIRE. [SEC. ARCT. EXP. FRAM 



Collema ceranoides (BoRR.) MUDD. TH. FR. Spitsb. p. 52. Spitsb. 



- Over moss and earth. 



Collema crispun L. TH. FR. Arct. p. 276. Icel. Over earth, 

 and moss. 



Collema flaccidum (Acn.) TH. FR. TH. FR. Arct. p. 281. Green!., 

 Spitsb.. Icel. Over stone. 



Collema melaenum ACH. TH. FR. Arct. p 277. Greenl., Spitsb. 

 Over rocks. 



Collema nigrescens (Huos.) ACH. TH. FR. Arct. p. 280. Greenl., 

 Icel. On trees. 



Collema plicalile ACH. NYL. Syn. I. p. 109. Greenl. On rocks. 



Collema pulposum (BERNH.) NYL. - TH. FR. Arct. p. 277. Am. 

 Greenl., Spitsb., Icel. Over earth. 



Collema verrucaeforme ACH. TH. FR. Arc. p. 279. Greenl., Icel. 



- Over moss. 



Leptogium KBR. 



Leptogium lacerum (Sw.) TH. FR. - TH. FR. Arct. p. 282. Greenl., 

 Icel. Between moss on rocks. E. P. S. N. King Oscar Land, Harbour- 

 fjord (24), Goosefjord (34, 39), Vendom Kap (55); North Devon (66). 



Leptogium saturninum (DICKS.) TH. FR. TH. FR. Arct. p. 282. - 

 Am., Greenl. -- Over bark and rocks. E. P. S. N. King Oscar Land, 

 Harbourfjord (31), Goosefjord (38, 39). 



Leptogium Scliraderi (BERNH.) NYL. NYL. Syn. I. p. 133. Am. 



- On rocks. 



Leptogium scotinum ACH. TH. FR. Arct. p. 283. Spitsb., Icel. 

 Over moss and stone. 



Leptogium tenuissimum ACH. - TH. FR. Arct. p. 283. - - Spitsb. 



- Over moss. 



Leptogium tetrasporum TH. FR. TH. FR. Engl. Pol. Exp. p. 367. 

 Am. Over earth. 



Pyrenopsis NYL. 



Ptjrenopsis liacmatops (SMRFT.) TH. FR. FORSS. Gloeol. p. 51. 

 Greenl. Over rocks. 



