LICHENS 83 



is classed as Buellia parasema by Rothrock. One new species is 

 described Lecidea alaskensis Nyl., based upon material collected by 

 Dr. Bean and forwarded to Nylander by Willey. Macoun indicates 

 that two species of Lecidea were collected on rocks on St. George 

 Island, but no specific names are given. 



HETEROTHECIUM. 



KEY TO THE SPECIES. 



Hypothecium red sanguinarium. 



Hypothecium colorless sanguinarium affine. 



36. Heterothecium sanguinarium (L.) Flot. 



Lichen sanguinarius LINN^US, Sp. PI. ed. 2.2: 1607. 1764. 

 Heterothecium sanguinarium FLOTOW in Bot. Zeit. 1850. SOWERBY, Eng. 

 Bot. /. 755. 



Vancouver Island, Broughton Strait (Trelease, 807) ; Yakutat 

 (Trelease, 840, 843); White Pass, 1300 ft. (Trelease, 834) ; Virgin 

 Bay (Trelease, 847) ; Port Wells (Trelease, 835^ in part) ; Unalaska 

 (Setchell). In addition to the stations mentioned above it was col- 

 lected by Wright on the islands of Bering Strait ; by Dr. Cooley at 

 Juneau and at Sheep Cove, near Juneau ; and by Dr. Bean at Esch- 

 scholtz Bay, Yakutat Bay, and Cook Inlet. 



On the bark of various trees. In this species there is usually only a 

 single spore in an ascus. Tuckerman says : " The lichen is now 

 bisporous in Europe." The measurements given for a single spore 

 are 5 ^jj p. No. 840 from Yakutat and the specimen from Broughton 

 Strait are bisporous, with spore measurements 4 ^ 2 /*. 



37. Heterothecium sanguinarium affine (Schaer.) Flot. 

 Lecidea affinis SCHAERER, Enum. 132. 1850. 

 Heterothecium sanguinarium affine FLOTOW in Bot. Zeit. 1850. 



Orca (Trelease, 841, 848); Virgin Bay (Trelease, 1119). New 

 to Alaska. 



On the bark of coniferous trees. While the forma affine is new to 

 Alaska, the species was collected on the islands of Bering Strait by 

 Wright. 



In addition to the species given above, Tuckerman notes that H. 

 pezizoideum (Ach.) Flot. was collected by Wright on mosses on the 



islands of Bering Strait. 



BIATORA. 



KEY TO THE SPECIES. 



Apothecia scarlet cinnabarina. 



Apothecia variously colored. 



Apothecia lemon-yellow lucida. 



