698 MINNESOTA BOTANICAL STUDIES. 



36. Lecanora cinerea (L.) Sommerf. 



On granitic rocks. American islands, July, 1896. no. 53. 

 Not previously reported from Minnesota. 



37. Lecanora cinerea (L.) Sommerf. var. giofoosa Nyl. 



On granitic rocks. American islands, July, 1896, no. 54. 

 Not previously reported from Minnesota. 



38. Lecanora muralis (Schreb.) Sciler. 



On granitic rocks. American islands, July, 1896, no. 51. 

 Not previously reported from Minnesota. 



39. Rinodina sophodes (Ach.) Nyl. 



On trees. American islands, July, 1896, no. 15. 

 Not previously reported from Minnesota. 



40. Gyalecta lntea (Dicks.) Tuck. 



On wood and moss. American islands, July, 1896, no. 1 . 

 Spores rarely three or even four-celled, in which the 

 plant tends toward G y alexia friesii Koerb. 

 Not previously reported from Minnesota. 



41. Stereocanlon paschale (L. ) Fr. 



On earth among rocks. Small island south of Little 

 Oak island, July, 1894, no. 1730. Little Oak island. July, 

 1894, no. 2109. Big island, July, 1894, no. 2154. Elmer 

 point, Aug., 1894, no. 2803. American islands, July, 

 1896, no. 23. 



Not before reported from central • northern United 

 States, except by the writer, in Proc. Iowa Acad. Sci. 

 1894. The number of collections above prove that the 

 plant is common. 



42. Cladonia cariosa (Ach.) Spreng. 



On wood. Small island south of Little Oak island, 

 July, 1894, no. 1726a. Island near Massacre island, July, 

 1894, nos. 2437c and 2485. 



Not previously reported from Minnesota. 



43. Cladonia pyxidata (L.) Fr. 



On earth among rocks. Garden island, July, 1894, no. 

 430. Big island. July, 1894, no. 2153. Massacre island, 

 July, 1894, no. 2603. Island near Northwest angle, Aug., 

 1894, nos. 3227 and 3287. Flag island, Aug., 1894, nos. 

 2896 and 2900. American islands, July, 1896, no. 33. 



