Fink : LICHENS OF THE MINNESOTA VALLEY. 325 



i6i. Buellia puUata Tuck. 



On rocks, frequent. Morton, July 7, 1899, no. 327. North 

 Redwood, July 10, 1899, nos. 365 and 366. Granite Falls, 

 July II, 1899, no. 405. Pipestone, July 18, 1899, no. 600. 



Not previously reported from Minnesota. 



162. Buellia turgescens (Nyl.) Tuck. 



On old boards, rare. Mankato, June 22, 1899, no. 21. 

 Not previously reported from Minnesota. 



163. Buellia petraea (Flot., Koerb.) Tuck. 



On granite, quartzite and pipestone, abundant. New Ulm, 

 July 5, 1899, nos. 242 and 293. Redwood Falls, July 6, 1899, 

 no. 306. Granite Falls, July 11, 1899, no. 422. 



164. Buellia petraea (Flot., Koerb.) Tuck. var. montagnaei 

 Tuck. 



On same rocks as last and even more abundant ; however, 

 only a single collection on a bowlder at first locality. Man- 

 kato (Rapidan), June 28, 1899, no. 183. Morton, July 7, 1899, 

 nos. 318 and 321. North Redwood, July 10, 1899, no. 362. 

 Granite Falls, July 11, 1899, no. 422a. Pipestone, July 18, 

 1899, nos. 593 and 620. 



165. Opegrapha varia (Pers.) Fr. 



On trees, abundant. Mankato, June 23, 1899, no. 40, June 

 26, 1899, no. no, and July i, 1899, no. 204. Granite Falls, 

 July II, 1899, nos. 419 and 421, July 13, 1899, "°- 4^3' ^"^ 

 July 15, 1899, nos. 539 and 548. 



166. Opegrapha varia (Pers.) Fr. var. pulicaris (Hoffm.) Fr. 

 On trees, rare. Granite Falls, July 15, 1899, no. 528. 



Not previously reported from Minnesota. 



167. Graphis scripta (L.) Ach. 



On trees, common at Mankato. Mankato, June 22, 1899, no. 

 14. Granite Falls, July 13, 1899, "°- 5°3- 



168. Graphis scripta (L.) Ach. var. recta (Hume.) Nyl. 



On birches, rare. Mankato (Minneopa Falls), June 27, 1899, 

 no. 141a. 



169. Graphis scripta (L.) Ach. var. limitata Ach. 



On trees, rare. Mankato, June 22, 1899, no. 23. Granite 

 Falls, July 13, 1899, no 469, and July 15, 1899, no. 538. 



170. Arthonia lecideella Nyl. 



On trees, infrequent. Mankato, June 23, 1899, no. 69. 



