2 PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 



Usnea barbata, (L.) Fr., var. dasypoga, Fr. 

 Old Sitka. 



Alectoria ochroleuca, (Ehrh.) Nyl., var. sarmentosa, Nyl. 

 Old Sitka. Sterile. 



Alectoria ochroleuca, (Ehrli.) Nyl., var. nigricans, Nyl. 

 Cheruofski, Uualaslika. Sterile. 



Alectoria jubata, (L.) Ach. 



No locality given. Sterile. 



Cetraria Fahlunensis, (L.) Schser. 

 jS"o localit}^ given. 



Cetraria Islandica, (L.) Ach. 

 Plover Bay, Siberia. 



Cetraria cucuUata, (Bell.) Ach. 



Chamisso Island, Arctic Ocean. 



Cetraria nivalis, (L.) Ach. 

 Plover Bay, Eastern Siberia, 



Cetraria lacuuosa, Ach. 



Sterile specimens from logs on island in Cross Sound, Baranoff Island, 

 Sitka. 



Cetraria glauca, (L.) Ach. 

 Luxuriant but sterile sioecimens from Cook's Inlet, Alaska. 



Cetraria aleurites, (Ach.) Th. Fries. 



Stein has said of tbis species that it is an evident transition, resem- 

 bling Cetraria in its fruit and spermagonia, and Parmelia in its habit, 

 and hence often placed by the later lichenologists in the latter genus. 

 Cook's Inlet, Alaska ; also, Eschscholtz Bay, on the bark of the Coniferse. 



Cetraria juniperina, (L.) Ach. 



Small sterile specimens from Chamisso Island in Eschscholtz Bay j 

 on bark. 



Theloschistes parietinus, (L.) Norm. 

 Port Clarence, Alaska. 



Theloschistes parietinus, (L.) Norm., var. polycarpus, Ehrh. 



Widely diffused over the Arctic regions and apparently very com- 

 mon, being obtained at a number of points. 



Parmelia saxatilis, (L.) Fr. 

 Cape Lisburne. Unalashka. On logs in Cross Sound, Alaska. 



Parmelia saxatilis, (L.) Fr. var. omphalodes, Fr. 

 Near Cape Lisburne. 



