LICHENS 117 



I find no record of this for Newfoundland, Labrador, or Greenland. 

 Th. Fries, in his Lichenes Arctoi, 79, records its occurrence in Fin- 

 land, and expresses his conviction that it is found in many other 

 northern localities. 



Nylander credits Pannaria nigra (Huds.) Nyl. to Port Clarence 

 under the synonym Pannularia nigra (Huds.). 



Family PELTIGERIACEJE. 

 SOLORINA. 



KEY TO THE SPECIES. 



Thallus orange-saffron-colored beneath crocea. 



Thallus white beneath saccata spongiosa. 



138. Solorina saccata spongiosa (Sm.) Nyl. 



Solorina spongiosa SMITH in Sowerby, Eng. Bot. /. 1374. 

 Solorina saccata spongiosa NYLANDER, Syn. 331. 1860. 



Disenchantment Bay (Trelease, 880) . One fragmentary specimen. 

 This is a common alpine and arctic lichen. Collected at Bering 

 Strait by Wright and reported from Port Clarence by Nylander, both 

 much more northern localities than the present record. 



139. Solorina crocea (L.) Ach. 



Lichen croceus LINNAEUS, Fl. Suec. ed. 2. 1101. 1755. 



Solorina crocea ACHARIUS, L. U. 149. 1810. SOWERBY, Eng. Bot. /. 498. 

 HOFFM. PI. Lich. /. 41. f. 2-4. 



Disenchantment Bay (Burroughs, 1106); Point Gustavus (Coville 

 and Kearney) ; Orca (Trelease, 1 104) ; Pinnacle Rock, Chichagof Bay, 

 2700 feet (Palache, 1082) ; St. Matthew Island (Trelease, 1078, 1083). 



A common alpine and arctic lichen. Collected on St. Paul Island 

 by Macoun and on the shores of Bering Strait by Wright. 



According to Tuckerman, Solorina saccata (L.) Ach. was collected 

 by Wright on the islands of Bering Strait. 



PELTIGERA. 



KEY TO THE SPECIES. 



Thallus small, veins underneath black venosa. 



Thallus medium-sized to large. 



Upper surface of thallus besprinkled with brown warts apthosa. 



Upper surface of thallus without warts. 

 Surface of the thallus smooth. 



Thallus small, cream-colored underneath canina spuria. 



Thallus of medium size or large. 



