LICHENS 8l 



Alaska Peninsula and Chamisso Island, Eschscholtz Bay, the material 

 having been collected by Dr. Bean. Tuckerman's records are New 

 York and New England. The specimens are variously associated 

 with Lecanora atrosulphurea and Buellia geographica. 



33. Lecidea nigrocinerea Nyl. 



Lecidea nigrocinerea NYLANDER, Lich. Pyreno-Orient. 25. in notula. 1891. 



Port Wells (Trelease, 936 in part). New to Alaska. Tuckerman 

 makes no record of its occurrence in North America. 



Though this species is new to Alaska, Nylander lists it for Law- 

 rence Bay, Konyam Bay, and St. Lawrence Island, Siberia. 



34. Lecidea panaeola Ach. 



Lecidea panaola ACHARIUS, L. U. 201. 1810. 



Summit of White Pass, 3000 ft. (Trelease, 950) ; Cape Nome (Set- 

 chell) ; St. Michael (Setchell). Also collected by Dr. Bean at Un- 

 alaska. 



35. Lecidea tessellata Flk. 



Lecidea tessellata FLOERKE, D. Lich. 64. 1821. 



St. Michael (Setchell). New to Alaska. 



On rock. Previously reported in America from New England, 

 Greenland, Rocky Mts., California, and other localities. 



OTHER ALASKA SPECIES. 



In addition to the species given above, Tuckerman records the occur- 

 rence of Lecidea enteroleuca muscorum Koerb., L. arctica Sommerf., 

 L* assimilata Nyl., all collected by Wright at Bering Strait; the 

 last species is credited to St. Lawrence Island and Port Clarence by 

 Nylander. Rothrock records the following species as having been 

 collected by Dr. Bean, no definite locality being given : L. contigua 

 speirea (Ach.) Nyl., L. enteroleuca latypea (Ach.) Nyl., L. fus- 

 coatra Fr. Nylander records fifty-two additional species divided into 

 thirteen groups. Many of these sections would be variously distributed 

 among different genera by other writers, but in this list I shall retain 

 the arrangement made by Nylander. With the exception of L. sub- 

 duplex Nyl., which w r as collected on rock at Port Clarence, all the 

 members of the first group grow on wood, moss, or on the earth. These 

 species might be placed in the genus Biatora. Nine were collected 

 at Port Clarence only, namely : L. albohyalina Nyl., L. meiocarpa 

 Nyl., L. internectens Nyl., L. insperabilis Nyl., L. denotata Nyl., 

 L. sabuletorum Flk., L. syncomista Flk., L. meiobola Nyl., L. trt- 

 plicans Nyl. ; seven were found only on St. Lawrence Island, namely : 



