LICHENS 123 



STICTA. 



KEY TO THE SPECIES. 



Thallus sorediate. 



Soredia lemon-colored crocata. 



Soredia grayish anthraspis. 



Thallus not sorediate. 



Thallus greenish-yellow, edges very finely cut oregana. 



Thallus brownish, edges not very finely cut. 



Thallus with urceolate cyphels quercizans. 



Thallus without cyphels. 



Thallus large, with elongated lobes pulmonaria. 



Thallus small, with round, crenate lobes.... pulmonaria linita. 



154. Sticta anthraspis Ach. 



Sticta anthraspis ACHARIUS, Meth. Lich. 280. 1803. 



Point Gustavus, Glacier Bay (Coville and Kearney, 775). New to 

 Alaska. 



Plant well developed, but sterile. Acharius founded the species on 

 material collected on the coast of California by Menzies. Tuckerman 

 records it as found in Oregon by Hall. Macoun's Canadian Lich. NO. 

 153 was collected at Victoria. 



155. Sticta crocata (L.) Ach. 



Lichen crocatus LINN^US, Mant. 310. 1771. 



Sticta. crocata ACHARIUS, Meth. Lich. 277. 1803. DEL. Stict. 56. /. 4. f. 10. 



Yakutat (Trelease, 1100 in part). Sterile specimen on dead conif- 

 erous twigs with Nephroma Icevigatum and Physcia tribacea. New 

 to Alaska. 



This is a widely distributed lichen. Arnold records it from New- 

 foundland, J. M. Macoun from Canada. It is not mentioned in Fries' 

 Lich. Arct., and the Yakutat station would seem to be the most north- 

 ern one established on this continent. 



156. Sticta quercizans (Michx.) Ach. 



Lichen quercizans MICHAUX, Fl. Bor. Amer. 2 : 524. 1803. 

 Sticta quercizans ACHARIUS, Syn. 234. 1814. 



Unalaska (Setchell). New to Alaska. 



A small sterile specimen, growing on the earth. 



Described from material collected by Michaux on Grandfather 

 Mountain, North Carolina. It is common throughout the Southern 

 States, ranging northward to Canada and Oregon. 



