694 MINNESOTA BOTANICAL STUDIES. 



89. Lecanora calcarea (L.) SOMMERF. var. contorta FR. 



On bowlders, especially calcareous, rare. Battle lake, June 

 20, 1900, nos. 48, 92 and 100. Leaf hills, June 27, 1900, no. 

 296. 



90. Lecanora gibbosa (Acn.) NYL. var microspora A. ZAHLB. 

 On exposed granitic bowlders, frequent. Leaf hills, July 2, 



1900, no. 388. 



Not previously reported from Minnesota and new to North 

 America. Synonymy uncertain. 



91. Lecanora cervina (PERS.) NYL. 



On granitic bowlders, infrequent. Leaf hills, June 26, 1900, 

 nos. 205 and 238, June 27, 1900, no. 251 and July 2, 1900, no. 

 397. Bemidji, July 16, 1900, no. 744. 



92. Lecanora fuscata (SCHRAD.) TH. FR. 



On granitic bowlders, infrequent. Battle lake, June 20, 

 1900, no. 80. Leaf hills, June 26, 1900. no. 218 and June 

 27, 1900, no. 280. Bemidji, July 10, 1900, no. 560. Red 

 lake, July 27, 1900, no. 924. 



93. Lecanora privigna (Acn.) NYL. 



On bowlders, especially calcareous, rare. Leaf hills, June 

 27, 1900, nos. 259, 288 and 292 and July 2, 1900, no. 393. 

 Bemidji, July 10, 1900, no. 584. 



The last is a peculiar clustered form on granitic bowlders. 



94. Lecanora privigna (Acn.) NYL. var. pruinosa AUCT. 



On calcareous bowlders, rare. Leaf hills, July 2, 1900, no. 

 404. 



95. Lecanora xanthophana NYL. 



On granitic bowlders, locally frequent on high hills. Battle 

 lake, June 20, 1900, no. 47 and June 23, 1900, no. 167. 



96. Rinodina oreina (Acn.) MASS. 



On granitic rocks, common in first locality. Battle lake, 

 June 20, 1900, nos. 90 and 106. Leaf hills, June 26, 1900, 

 no. 202. Thief River Falls, July 21, 1900, no. 865. Red 

 lake, August i, 1900, no. 1021. 



97. Rinodina sophodes (Acn.) NYL. 



On trees, old wood and rocks, common. Battle lake, June 

 18, 1900, no. 19, June 21, 1900, no. 119 and June 23, 1900, 

 no. 162. Leaf hills, June 26, 1900, nos. 222 and 231. Hen- 



