244 MINNESOTA BOTANICAL STUDIES. 



On trees abundant on Grand Portage island, infrequent to 

 common elsewhere. Sterile. Grand Portage island, June i8, 

 1897, no. 17. Gunflint, July i, 1897, no. 354. Tofle, July 

 12, 1897, no. 658. Beaver Bay, July 13, 1897, no. 680. 

 Snowbank lake area, July 20, 1897, no. 837. Ely, July 28, 

 1897, no. 996. 



24. Alectoria jubata (L.) Tuck. var. cbalybeiformis Ach. 

 On trees and old wood, frequent or common throughout. 



Sterile. High bluff at south end of South Fowl lake, June 

 26, 1897, no. 194. Gunflint, June 30, 1897, no. 258, and July 

 I, 1897, no. 316. Misquah hills, July 5, 1897, no. 514. 

 Beaver Bay, July 15, 1897, no. 786. Snowbank lake area, 

 July 19, 1897, no. 815, and Jul}' 20, 1897, no. 842. Ely, July 

 28, 1897, no. 998. 



25. Alectoria jubata (L.) Tuck. var. implexa Fr. 



On trees, infrequent. Sterile. Misquah hills, July 3, 1897, 

 no. 421. Beaver Bay, July 14, 1897, no. 731. 

 Not previously reported from Minnesota. 



26. Theloschistes polycarpus (Ehrh.) Tuck. 



On trees, infrequent or rare west of Gunflint, elsewhere fre- 

 quent or common. Grand Portage island, June 18, 1897, no. 

 20. Gunflint, July 2, 1897, no. 393. Misquah hills, July 5, 

 1897, nos. 452 and 487. Beaver Bay, July 13, 1897, nos. 678 

 and 686. El}^ July 28, 1897, no. 985. 



27. Theloschistes lychneus (Nyl.) Tuck. 



On rocks, rare. Grand Portage island, June 23, 1897, no. 

 147. Snowbank lake area, July 19, 1897, no. 830. 



28. Parmelia periata (L.) Ach. 



On rocks and rarel}^ on trees, rare to infrequent except at 

 Gunflint, where the species seemed to be common. Sterile. 

 Grand Portage, June 24, 1897, no. 169. Portage between 

 South Fowl lake and Pigeon river, June 26, 1897, no. 205. 

 Gunflint, June 7, 1897, no. 368. Misquah hills, July 5, 1897, 

 no. 543. Beaver Bay, July 14, 1897, no. 725. Snowbank 

 lake area, July 24, 1897, no. 925. 



29. Parmelia perforata (Jacq^) Ach. 



On trees, common. Sterile. Tofte (Carlton peak), July 

 10, 1897, no. 572. 



A puzzling plant with sorediate margined lobes and otherwise 



