208 MINNESOTA BOTANICAL STUDIES. 



103. Placodium ferrugineum (IIuds.) Hepp. 



On dead cedars, rare. Rainy Lake City, August 5, 1901, 

 nos. 1 193 and 1199. 



104. Placodium ferrugineum (Huds.) Hepp. var. pollinii Tuck. 

 On dead cedars, rare. Rainy Lake City, August 5, 1901, 



no. 1188. 



105. Placodium vitellinum (Ehrh.) Naeg. and Hepp. 



On rocks and old wood, infrequent. Oak island, July 8, 

 1901, no. 404 and July 10, 1901^0. 490. Emo,July22, 1901, 

 no. 811. Koochiching, July 27, 1901, no. 948. Rainy Lake 

 City, August 1, 1901, no. 1067 and August 6, 1901, no. 

 1227. 



106. Placodium vitellinum (Ehrh.) Naeg. and Hepp. var. 

 aurellum Ach. 



On rocks, infrequent. Flag island, July 12, 1901, no. 544. 

 Blueberry island, July 13, 1901, no. 564. Koochiching, July 

 31, 1901, no. 1049. Rainy Lake City, August 1, 1901, no. 

 1068. Tower, August 24, 1901, no. 1738. 



107. Lecanora rubina (Vill.) Ach. 



On rocks, rare or infrequent. July 10, 1901, no. 508. 

 Blueberry island, July 13, 1901, nos. 590 and 599. Emo, July 

 22, 1901, no. 810. Koochiching, July 31, 1901, no. 1060. 

 Rainy Lake City, August 2, 1901, nos. 1102 and 1104 and 

 August 8, 1 901, no. 1207. Tower, August 28, 1901, nos. 

 1851 and 1852. 



108. Lecanora rubina (Vill.) Ach. var. heteromorpha Ach. 

 On rocks, infrequent. Blueberry island, July 13, 1901, no. 



605. Rainy Lake City, July 8, 1901, no. 1277. Kettle falls, 

 August 9, 1901, no. 1344. Tower, August 28, 1901, nos. 1850 

 and 1862. 



109. Lecanora muralis (Schreb.) Schaer. 



On rocks, locally frequent. Blueberry island, July 13, 1901, 

 no. 591. 

 no. Lecanora muralis (Schreb.) Schaer. var. saxicola Schaer. 



On rocks, infrequent. Oak island, July 10, 1901, no. 518. 

 Flag island, July 13, 1901, no. 543. Emo, July 22, 1901, no. 

 823. Koochiching, July 26, 1901, no. 927. Rainy Lake City, 

 August 1, 1901, no. 1069. Harding, August 17, 1901, no. 



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