256 MINNESOTA BOTANICAL STUDIES. 



102. Placodium vitellinum (EHRH.) NAEG. and HEPP. 



On old wood, frequent. Beaver Bay, July 13, 1897, no. 660. 

 Spores simple or two-celled and reaching 30 in each ascus. 



103. Placodium vitellinum (EHRH.) NAEG. and HEPP. var. 

 aurellum ACH. 



On rocks, common at Gunflint, rare elsewhere. Grand Port- 

 age island, June 24, 1897, no. 163. Gunflint, June 30, 1897, 

 no. 279, and July i, 1897, no. 329. Tofte (Carleton peak), 

 July 10, 1897, no. 618. Snowbank lake area, July 24, 1897, 

 no. 903. Spores reaching 20 in asci. 



104. Lecanora rubina (VILL.) ACH. 



On rocks, common or frequent. Grand Portage (Mt. Jose- 

 phine), June 19, 1897, no. 47. Grand Portage island, June 21, 

 1897, no. 73. Gunflint, June 30, 1897, no. 265. Misquah 

 hills, July 5, 1897, no. 486. Beaver Bay, July 13, 1897, no. 

 705. Snowbank lake area, July 26, 1897, no. 054. 



105. Lecanora rubina (VILL.) ACH. var. heteromorpha ACH. 

 On rocks, frequent locally. Grand Portage (Mt. Josephine), 



June 19, 1897, no. 47a. Gunflint, July i, 1897, no. 326. Pali- 

 sades, July 15, 1897, no. 748. 



Not previously reported from Minnesota. 



106. Lecanora muralis (SCHREB.) SCHAER. var. saxicola 



SCHAER. 



On rocks, common or frequent. Grand Portage island, June 

 21, 1897, no. 75. Rose lake, June 29, 1897, no. 224. Mis- 

 quah Chills, July 5, 1897, no. 513. Tofte, July 12, 1897, no. 643. 



107. Lecanora muralis (SCHREB.) SCHAER. var. diffracta FR. 



On rocks, rare. Grand Portage (Mt. Josephine), June 19, 

 1897, no. 46. 



Not previously reported from Minnesota. 



108. Lecanora pallida (SCHREB.) SCHAER. 



On trees, infrequent. Gunflint, July i, 1897, no. 337. 

 Not previously reported from Minnesota. 



109. Lecanora frustulosa (DICKS.) MASS. 



On rocks, frequent. Grand Portage, June 21, 1897, no. 78, 

 and June 23, 1897, no. 153. Gunflint, July 2, 1897, no. 376. 

 Beaver Bay, July, 13, 1897, no. 706. 



Not previously reported from Minnesota and new to the in- 

 terior of North America. 



