— 8i — 



Gyrophora reticulata (Schaer.) Th. Fr. 

 Gyrophora hyperborea (Hoffm.) Ach. 

 Gyrophora rugifera (Nyl.) Th. Fr. 

 Gyrophora erosa (Web.) Ach. 



A stranger would naturally anticipate a large development of the Colle- 

 maceous lichens but they are few and far between in all the localities thus far 

 visited. But one species of Collema has thus far been determined with certainty 

 and three of Leptogium, while at no place are they abundant. 



Collema nigrescens (Leers) Wainio. Among mosses on trunks of Acer 

 macrophyllum. 



Collema sp. Material small, sterile; growing among mosses near the 

 snow line on Mt. Baker. 



Leptogium tenuissimum (Sm.) Koerber. On Selaginella sp., at 1600 feet 

 on Sumas Mt. 



Leptogium palmatum (Huds.) Mont. On earth at 2000 feet; Sumas Mt. 



Leptogium pulchellum (Ach.) Nyl. Among mosses on the trunks of 

 Acer macrophyllum, probably throughout the lowlands, but rare everywhere; 

 determination somewhat doubtful, material submitted to Dr. Fink, and Dr. 

 Hasse, was not recognized by them and it does not agree with any material seen 

 by me or descriptions read but evidently belongs under the type of pulchellum. 



Leptogium tremelloides (L.) Gray. A minute specimen of this was found 

 growing with Parmeliella microphylla, on rocks on Sumas Mt.; spores 8-10 by 

 18-27M. 



Heppia virescens (Despr.) Nyl. 7000 feet and above, Mt. Baker, on dead 

 mosses. 



Massalongia carnosa (Dicks.) Koerber. Same locality as, and mixed 

 with, Heppia virescens. 



Parmeliella microphylla (Sw.) Mull. Arg. Among mosses on rocks; 

 slopes of Mt. Baker and Sumas Mt., and undoubtedly common everywhere in 

 the mountains. 



Parmeliella cyanolepra (Tuck.) Herre. Sterile; Sumas Mt. at 1800 



feet. 



Parmeliella lepidiota (Sommerf.) Herre (?). A sterile lichen occurring 

 on Mt. Baker and Sumas Mt. is with little doubt this species. 



LoBARiA PULMONARIA (L.) Hofifm. On various trees but not common, 

 throughout the lowlands; very abundant in the rainy forest belt on the slopes 

 of Mt. Baker between 1000 and 3000 feet. 



LoBARiA OREGANA (Tuck.) Herre. Very abundant on trunks of hemlocks 

 on Mt. Baker from 3000 to 5000 feet elevation. 



Sticta anthraspis Ach. Rare; near Glacier at about 1000 feet elevation; 

 specimens small and sterile. 



Nephroma helvetica Ach. On Acer circinatum, Glacier, elevation 950 



feet. 



SoLORiNA crocea (L.) Ach. Abundant and very finely developed on earth 

 amid the Mt. Baker snow fields at 7000 feet and above. 



