igsr. No. 15. lichens from the gjøa expedition. 



Cet rar i ci Ach. 



crispa Ach. Herschel Island. 



ciicullata (Bell.) Ach. King Point, and Herschel Island, many well 

 developed specimens. 



jwiiperina var. tcrrcstris Sch.aer. Giøa Harbour, well developed. 

 The plants are densely caespitose, laciniae + narrow — some of them 

 approach to C. alvarciisis, but this species is tubulose and more ramose. 



The pycnides are but sparingly developed and often sterile, pycno- 

 conidia straight or slightly curvate, cylindrical or somewhat apiculate, 

 4 — 6 // long. 



C. jmiipcritia from Ellesmereland (Sec. Arct. Exp. Fram p. 37) is 

 var. ter re s tris. 



)iivalis (L.) Ach. Gjoa Harbour. King Point, and Herschel Island. 

 Well developed, but sterile. 



teiuiissiuia (Schreb.) Fr. A few poorly developed specimens from 

 Gjøa Harbour. 



Cladonici (Hill) Wain. 



deformis (L ) Hoffm. Station not indicated. 



pyxidata var. neglecta (Flk.) Schaer. Herschel Island. 



Candehiriella Müll. Arg. 



vitcllina (Ehrh.) Müll. Arg. A poor specimen from Gjøa Harbour, 

 on moss. Typicalh' developed, asci multisporous, spores 11 — 14X4 — 6//. 



Dactylina. Nyl. 

 arctica (Hook.) Nvl. King Point. 



Dufourea (Ach.) Nyl. 

 rmnidosa Hook. A poor specimen from Gjøa Harbour. 



Lecanora Ach. 



epibrya (Ach.) Nyl. Gjøa Harbour and Herschel Island, very common. 

 verrucosa (Ach.) Laur. Herschel Island. 



Pcrtusaria glomerata from Ellesmereland: Harbour Fjord and Isaachsen 

 Fjord (Sec. Norw. Arct, Exp. Fram (1909) p. 28) is Lecanora verrucosa. 



