LICHENS 129 



St. Paul Island (Trelease, 1147). Credited to St. Lawrence Island 

 by Nylander. 



The specimens from Muir Glacier and St. Paul Island are fertile. 

 With the specimen from Kukak Bay are small fragments of Thelo- 

 schistes polycarpus. 



170. Physcia tribacea (Ach.) Tuck. 



Lecanora tribacea ACHARIUS, Syn. 191, in part, 1814. 

 Physcia tribacea TUCKERMAN, Syn. N. A. L. 75. 1884. 



Yakutat (Trelease, noo, 1144). No. 1144 is on dead twigs of 

 Coniferae. No. noo is associated with Nephroma IcEvigatum and 

 Sticta crocata. Reported from Port Clarence by Nylander. 



171. Physcia stellaris (L.) Nyl. 



Lichen stellaris LINN^US, Fl. Suec. ed. 2. 1082. 1755. 



Physcia stellaris NYLANDER, Syn. 424. 1860. SOWERBY, Eng. Bot. /. 1697. 



Muir Glacier (Trelease, 1133, 1135); Unalaska (Setchell). On 

 bark of trees. Collected by Dr. Bean on Chamisso Island, in Esch- 

 scholtz Bay, on Little Koniuji Island, of the Shumagin group, and 

 on Glacier Spit, in Cook Inlet. Nylander, in his enumeration of 

 Rothrock's list based upon Dr. Bean's collection, states that Physcia 

 melops (Duf.) Nyl. appears under the name Physcia stellaris. 

 Arnold reports this from Newfoundland, Lindsay from West Green- 

 land, and Fries * writes of it as being widely distributed in Scandinavia 

 as well as in West Greenland. 



No. 1133 is especially well fruited. 



172. Physcia stellaris apiola (Ach.) Nyl. 



Parmelia apiola ACHARIUS, Meth. Lich. 209. 1803. 



Physcia stellaris apiola NYLANDER, Lich. Scand. in. 1861. DILL. Hist 

 Muse. /. 24. f. 70. 



Alaska (Funston, 23); Yakutat (Trelease, 1139); Muir Glacier 

 (Trelease, 1012); Virgin Bay (Trelease, 977); St. Michael (Set- 

 chell) . New to Alaska. 



All the specimens are sterile. 



173. Physcia pulverulenta (Schreb.) Nyl. 



Lichen pulverulentus SCHREBER, Spicil. 128. 1771. 



Physcia pulverulenta NYLANDER, Syn. 419. 1860. HOFFM. PI. Lich. /. 8. 



/-* 



St. Paul Island (Trelease, 1116, 11160). New to Alaska. Dr. 

 Lindsay mentions it in his West Greenland Lichens, 2 and mentions 



1 Fries, Th. M. Lichenes Arctoi, 64. 1860. 



2 Lindsay, W. Lauder. Observations on the Lichens collected by Dr. Robert 

 Brown in West Greenland in 1867. Transactions of the Linnaean Society, vol. 

 xxvn, 332. 1871. 



