Fink : LICHENS OF THE LAKE SUPERIOR REGION. 247 



More commonly fruited than farther south and especially well 

 fruited in the Snowbank lake area. 



42. Parmelia conspersa (EHRH.) ACH. 



On rocks, abundant or common. Grand Portage island, 

 June 23, 1897, no. 103. Gunflint, June 30, 1897, no. 289. 

 Misquah hills, July 5, 1897, no.. 506. Tofte (Carlton peak), 

 July 10, 1897, no. 621. Palisades, July 15, 1897, no. 755. 

 Snowbank lake area, July 27, 1897, no. 967. 



43. Parmelia centrifuga (L.) ACH. 



On rocks, rare and sterile. Misquah hills, July 5, 1897, 

 no. 496a. 



Not previously reported from Minnesota and new to the in- 

 terior of the United States. 



44. Physcia speciosa (WULF. ACH.) NYL. 



On rocks and more rarely on old wood or trees, infrequent or 

 frequent. Grand Portage island, June 19, 1897, no. 27. Gun- 

 flint, June 30, 1897, no. 270 and July i j 1897, nos. 342 and 348. 

 Misquah hills, July 3, 1897, no. 438, and July 5, 1897, no. 489. 

 Tofte (Carlton peak), July 10, 1897, nos. 571 and 601. Snow- 

 bank lake area, July 24, 1897, no. 911. Nos. 348, 438 and 

 489 fruited. 



45. Physcia ciliaris (L.) DC. 



On rocks or high bluffs, rare. Grand Portage, June 24, 

 1897, no. 180. Bluffs at south end of South Fowl lake, June 

 26, 1897, no. 200. Palisades, July 15, 1897, no. 774. 



Not previously reported from Minnesota. 



46. Physcia aquila (Acn.) NYL. 



On trees, rare. Two Harbors, July 17, 1897, no. 791. 

 The only distinct specimen noted and not found farther 

 north. 



Not previously reported from Minnesota. 



47. Physcia pulverulenta (SCHREB.) NYL. 



On rocks infrequent or rare, and not often fruited. Grand 

 Portage island, June 23, 1897, nos. 145 and 1453. Grand Port- 

 age, June 23, 1897, no. 173. Gunflint, July 2, 1897? no. 374. 

 Snowbank lake area, July 26, 1897, no. 964. 



A very variable plant. No. 1453 is the typical form with re- 

 spect to the upper surface of the thallus, being lighter colored 

 than the others and pruinose. Like the others it is usually dark 



