316 BULLETIN UNIVERSITY OF MONTANA. 



List of Species of Lichens. 



Acolium tympanellum (Ach.) De Not. 



Bigfork, Flathead Lake, 2,960 ft., July 6, 1901. 

 Rost Lake, Alt. 3,000 ft, July 13, 1901. 

 Echo Lake,* Alt. 5,000 ft., August 12, 1901. 



Alectoria jubata (L.), var. chalybeiformis Ach. 

 O'Keefe canyon, 4,000 ft., June 14, 1901. 



Alectoria ochroleuca (Ehrh.) Nyl., var. rigida FT. 

 O'Keefe canyon, Alt. 3,500 ft., June 14, 1901. 



Alectoria ochroleuca (Ehrh.) Nyl. var. sarmentosa Nyl. 

 Rost Lake, Alt. 3,000 ft., July 20, 1901. 

 Craig Mountain, 6,150 ft., July 19, 1901. 

 Sinyaleamin Lake, 3,800 ft., June 21, 1901. 



Alectoria fremontii Tuckm. 



Sinyaleamin Lake, 3,800 ft., June 21, 1901. 

 *Missoula, Alt. 3,225 ft. 

 (This is commonly spoken of as "black moss." It seems to grow most 

 luxuriantly on Douglas Spruce, Pseudotsuga mucronata (Raf.) Seed. It 

 often trails from the limbs a foot or more. Sometimes it almost covers 

 a small tree from top to base. Indeed, it is possible the lichen kills small 

 trees by covering the leaves and shutting out the sun. In dense woods 

 and damp places it grows in great abundance.) 



Baeomyces aeruginosus (Scop.) DC. 



Wolf Creek, Alt. 3,600 ft., July 31, 1901. 

 Craig Mountain, 6,700 ft., July 19, 1901. 



Biatora paddensis Tuck. 



O'Keefe Canyon, 4,000 ft, June 14, 1901. 

 Rost Lake, 3,000 ft., July 15, 1901. 



Biatora decipiens (Ehrh.) Fr. 



Mission range, 3,000 ft., June 29, 1901. 



Biatora rufonigra Tuckm. 



Silloway Mountain, 7,650 ft, June 18, 1901. 



Bueilia petraea (Flot. Koerb.) Tuckm. var. montagnoei Tuck. 



* On rocks. Missoula, Alt 3,225, Oct. 20, 1896. 



* This locality must be on the mountain side above Echo Lake. If 

 not the altitude is incorrect, as this is almost on the same level as Rost 

 Lake. 



