250 MINNESOTA BOTANICAL STUDIES. 



10, 1897, no. 599. Palisades, July 15, 1897, no. 775. Snow- 

 bank lake area, July 24, 1897, no. 937. 



60. Umbilicaria pustulata (L.) HOFFM. var. papulosa TUCK. 

 On rocks, rare to frequent. Spores reaching 100 mic. in 



length. Gunflint, July i, 1897, no. 371. Misquah hills, July 

 3, 1897, no. 542. Palisades, July 15, 1897, no. 756. Snow- 

 bank lake area, July 24, 1897, no. 932. 



61. Umbilicaria hyperborea HOFFM. 



On rocks, rare, Grand Portage (Mt. Josephine), June 23, 

 1897, no. 104. 



Not previously reported from Minnesota and new to the in- 

 terior within the United States. 



62. Sticta amplissima (Scop.) MASS. 



On trees or rocks, rare or infrequent. Grand Portage, June 

 23, 1897, no. 115. Tofte (Carlton peak), July 10, 1897, no. 

 609. Beaver Bay, July 14, 1897, no. 720. Two Harbors. 

 July 17, 1897, no. 802. Ely, July 28, 1897, no. 981. 



63. Sticta pulmonaria (L.) ACH. 



On trees or rocks, common or frequent. Grand Portage 

 island, June 19, 1897, no. 23. Rose lake, June 28, 1897, no. 

 225. Gunflint, July i, 1897, no. 365. Misquah hills, July 3, 

 1897, no. 443. Tofte (Carlton peak), July 10, 1897, no. 396. 

 Beaver Bay, July 14, 1897, no. 724. Two Harbors, July 17, 

 1897, no. 795. Snowbank lake area, July 19, 1897, no. 808. 

 Ely, July 28, 1897, no. 984. 



64. Sticta limbata (SM.) ACH. 



On trees, very rare. Tofte, July 10, 1897, no. 626. Only two 

 plants collected with thallus also much like that of the Euro- 

 pean Sticta fuliginosa. Spores brown, two-celled, constricted, 



Not previously reported from Minnesota and only once from 

 North America. (Oregon, by J. W. Eckfeldt.) 



65. Sticta crocata (L.) ACH. 



On trees and rocks, rare. Tofte (Carlton peak), July 10, 

 1897, no 597. Beaver Bay, July 13, 1897, no. 685. Snow- 

 bank lake area, July 24, 1897, no. 940. 



Not previously reported from Minnesota and new to the in- 

 terior within the United States. 



