324 MINNESOTA BOTANICAL STUDIES. 



152. Biatora muscorum (Sw.) TUCK. 



On earth, frequent and once on sandstone. Mankato, July 

 i, 1899, no - 22 - New Ulm, July 4, 1899, no - 2 37- Red- 

 wood Falls, July 8, 1899, no. 344. Granite Falls, July n, 

 1899, no. 433. Pipestone, July 18, 1899, nos. 590 and 591. 



153. Biatora inundata FR. 



On limestone and sandstone, common. Mankato, June 22, 

 1899, no. 24. New Ulm, July 4, 1899, no. 234. 



154. Lecidea enteroleuca FR. 



On trees, common at Granite Falls. Mankato, June 23, 1899, 

 no. 80, and July i, 1899, no - 2O 9- New Ulm, July 4, 1899, no - 

 231. Redwood Falls, July 8, 1899, no. 354. Granite Falls, 

 July n, 1899, no - 4 2 9> J ul Y Z 3 l8 99 nos. 476, 479, 485 and 

 496, and July 14, 1899, no. 516. 



155. Lecidea enteroleuca FR. var. achrista SOMMERF. 



On trees, frequent. Granite Falls, July 13, 1899, nos. 471 

 and 475, and July 15, 1899, no - 54 6 - 



156. Buellia spuria (SCHAER.) ARN. 



On granitic rocks, quartzite and pipestone, frequent or com- 

 mon. New Ulm, July 5, 1899, no. 294. Morton, July 7, 1899, 

 no. 324. Granite Falls, July 12, 1899, nos. 445 and 458. 

 Pipestone, July 18, 1899, no. 612. 



157. Buellia alboatra (HOFFM.) TH. FR. 



On trees, especially Ulmus, rare at first locality and more 

 common at second. Mankato, June 22, 1899, no. 15. Gran- 

 ite Falls, July n, 1899, no. 382, and July 17, 1899, no. 577. 



158. Buellia alboatra (HOFFM.) TH. FR. var. saxicola FR. 



On limestone, shaded, rare. Mankato, June 22, 1899, no. 16. 

 Not previously reported from Minnesota. 



159. Buellia parasema (Acn.) TH. FR. 



On trees, infrequent. Mankato, June 23, 1899, no. 34, 

 and June 24, 1899, no. 85. New Ulm, July 3, 1899, no< 22 4' 

 Granite Falls, July n, 1899, no. 388. 



160. Buellia myriocarpa (DC.) MUDD. 



On old wood, common or frequent. Mankato, June 22, 

 1899, no. 20. Mankato (Rapidan), June 28, 1899, no. 184. 

 Granite Falls, July 17, 1899, no. 552. 



