246 MINNESOTA BOTANICAL STUDIES. 



406. Beaver Bay, July 14, 1897, no. 741. Snowbank lake 

 area, July 21, 1897, no. 873. 



36. Parmelia saxatilis (L.) Fr. var. sulcata Nyl. 



On trees, probably common. Grand Portage island, June 

 17, 1897, no. 7a. Gunflint, June 30, 1897, no. 240. 

 Not previously reported from Minnesota. 



37. Parmelia physodes (L.) Ach. 



On trees and rocks, common. Gunflint, July i, 1897, no. 

 383. Snowbank lake area, July 2, 1897, no. 883. 



Doubtless occurring over the whole region studied, but taken 

 for P. saxatilis (L.) Fr. modified by some peculiarity of sub- 

 stratum. 



38. Parmelia encausta (Sm.) Nyl. 



On trees, common. Grand Portage island, June 6, 1897, 

 no. 143. Tofte (Carlton peak), July 10, 1897, no. 565. 



Not previously reported from Minnesota and new to the in- 

 terior of North America. 



39. Parmelia olivacea (L.) Ach. 



On trees, common. Grand Portage island, June 18, 1897, 

 no. II. Grand Portage, June 23, 1897, no. 100. Gunflint, June 

 30, 1897, no. 260, and July 2, 1897, no. 395. Tofte (Carlton 

 peak), July 10, 1897, nos, 585 and 591. Beaver Bay, July 13, 

 1897, no. 712. Snowbank lake area, July 20, 1897, no. 848. 

 Ely, July 28, 1897, no. 1004. 



40. Parmelia olivacea (L.) Ach. var. prolixa Ach. 



On rocks, common or frequent. High bluff at south end of 

 South Fowl lake, June 26, 1897, no. 197. Gunflint, June 30, 

 1897, no. 290. Misquah hills, July 5. 1897, no. 491. Tofte 

 (Carlton peak), July 10, 1897, no. 574. Beaver Bay, July 13, 

 1897, no. 703. Palisades, July 15, 1897, no. 742a. Snow- 

 bank lake area, July 20, 1897, no. 832. 



Not previously reported from Minnesota and new to the in- 

 terior of North America. 



41. Parmelia caperata (L.) Ach. 



On trees and rocks, common. Grand Portage island, June 

 23, 1897, no. 107. Gunflint, June 30, 1897, no. 254a. Mis- 

 quah hills, July 3, 1897, no. 403. Tofte (Carlton peak), July 

 10, 1897, no 608. Beaver Bay, July 14, 1897, no. 728. Pali- 

 sades, July 15, 1897, no. 768. Snowbank lake area, July 19, 

 1897, no. 804 and July 24, 1897, no. 916. 



