PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 6 



Parmelia physodes, (L.) Acli. 



Elepliaut Point, Esclischoltz Bay, Arctic Ocean. Port Mulgrave, 

 Yakutat Bay. Fort Alexander, in Cook's Inlet. 



Physcia stellaris, (L.) Nyl. 



Cliamisso Island, in Escbscboltz Bay. Little Koniushi Island, of 

 Shumagin gronp. Glacier Spit, in Cook's Inlet, Alaska. 



Umbilicaria hyperborea, Hoffm. 

 Plover Bay, Siberia. Unalaska. 



Umbilicaria proboscidea, (L.) Stenh. 

 Saint Matthew's Island. 



Sticta pulmonaria, (L.) Acla. 

 Point Altliorp, Alaska ; lertile. Old Sitka ; sterile. 



Nephroma arcticum, (L.) Fr. 

 On Cliamisso Island, in Esclischoltz Bay. 



Peltigeraapthosa, (L.)Hofl'm. 

 Port Mulgrave, Yakutat Bay. 



Peltigera caiaina, (L.) Hoffm. 



Old Sitka. Port Mulgrave. Unalashka. Port Chatham, Cook's Inlet. 



Pannaria hypnorum, (Hoffm.) Koerb. . 



Unalashka Island. 



Pannaria brunnea, (Sw.) Mass. 



On logs on island in Cross Sound, Alaska. Chernofski Island. 



CoUema pulposum, (Bernli.) Ach. 

 Cape Lisburne, Alaska. 



Placodium elegans, (Link.) DC. 



Chamisso Island. Elephant Point, in Eschscholtz Bay. Chernofski 

 Bay. 



Placodium murorum, (Hoffm.) DC. 

 Plover Bay, Eastern Siberia. 



Placodium murorum, (Hoffm.) DC. var. miniatum, Tuckerman. 



Placodium crenulatum, (Wahlenb.) 



Plover Bay, Eastern Siberia. Sitka, on Baranofif Island. 



Placodium vitellinum, (Ebrh.) Naeg. &, Hepp. 

 Port Clarence, Alaska. 



Placodium cerinum, (Hedw.) Naeg. «& Hepp. 

 Icy Cape, Arctic Ocean. 



Placodium ferrugineum, (Huds.) Hepp. 



Port Clarence, Alaska, and elsewhere ', not rare. 



