8O CUMMINGS 



905) ; Unalaska (Setchell) ; St. Matthew Island (Trelease, 999 in 

 part) . New to Alaska. 



On rock associated with various species of Lecanora and Buellia. 

 A widely distributed species. 



28. Lecidea platycarpa forma steriza (Ach.). 

 Lecidea confluens steriza ACHARIUS, Meth. Lich. 40. 1803. 



Orca (Trelease, 912); Kadiak (Trelease, 944). New to Alaska. 



Reported from Newfoundland and Labrador by Arnold. The 

 locality given by Tuckerman is the White Mountains of New Hamp- 

 shire, no western stations being given. 



29. Lecidea albocaerulescens (Wulf.) Schaer. 



Lichen albo-ccerulescens WULFEN. in Jacq. Coll. 2 : 184. /. /J./. /. 1788. 

 Lecidea alboccerulescens SCHAERER, Spicil. 142. 1828. 



Orca, 1000 ft. (Trelease, 906, 9120), 1200 ft. (Trelease, 907) ; 

 Kadiak (Trelease, 910, 9100). Collected in Alaska by Dr. Bean, as 

 recorded by Rothrock ; locality not given. 



The specimen from Kadiak numbered 910 has apothecia which are 

 almost entirely without the pulverulence which is so characteristic of 

 this species. 



30. Lecidea albocaerulescens flavocaerulescens Schaer. 



Lecidea alboccerulescens b. flavoccerulescens SCHAERER, Spicil. 143. 1828. 



Summit of White Pass, 3000 ft. (Trelease, 919) ; Kadiak (Tre- 

 lease, 909) ; Unalaska (Setchell) ; Hall Island (Trelease, 908) ; Cape 

 Nome (Setchell) ; St. Michael (Setchell) . Collected by Dr. Bean 

 on Alaska Peninsula, as recorded by Rothrock. 



31. Lecidea confluens (Web.) Ach. 



Lichen confluens WEBER, Spicil. 180 /. 2 (excl. syn.). 1778. 

 Lecidea confluens ACHARIUS, Meth. Lich. 40. 1803. SOWERBY, Eng. Bot. /. 

 1964. 



St. Michael (Setchell). New to Alaska. 



On rock. Professor Tuckerman gives as known localities on this 

 continent, Arctic America and Greenland. 



32. Lecidea contigua Fr. 



Lecidea contigua FRIES, L. E. 208. 1831. 



Kadiak (Trelease, 896 in part, 898 in part, 9130, 914, 915) ; Hall 

 Island (Trelease, 8910; in part, 891 b in part, 903). 



Nylander records it for the three Asiatic stations in his Bering Sea 

 list, while Rothrock adds three other Alaskan stations : Unalaska, 



