230 MINNESOTA BOTANICAL STUDIES. 



no. 1229. Kettle falls, August 9, 1901, no. 1320. Harding, 

 August 17, 1901, no. 1567. Tower, August 23, 1901, no. 17 12. 



258. Buellia geographica (L.) Th. Fr. 



On rocks, rare. Blueberry island, July 13, 1901, no. 

 57- 



259. Buellia saxatilis (Schaer.) Kbr. 



On Bceomyces byssoides (L.) Schaer., rare. Rainy Lake 

 City, August 8, 1901, nos. 1285 and 1291. 



Not previously reported from Minnesota, and new to the 

 Mississippi valley. 



260. Buellia inquilina Tuck. 



On Lecanora cinerea (L.) Sommerf., rare. Warroad, July 



4, 1901, no. 369. 



Not previously reported from Minnesota and new to the Mis- 

 sissippi valley. 



261. Buellia parasitica (Flk.) Th. Fr. 



On Pertusaria communis DC. on cedars in swamps, rare. Oak 

 island, July 8, 1901, no. 398 and July 9, 1901, no. 460. Hard- 

 ing, August 20, 1901, no. 1627. Tower, August 26, 1901, no. 

 1792. 



Not previously reported from Minnesota and new to the Mis- 

 sissippi valley. } 



262. Buellia parmeliarum (Sommerf.) Tuck. 



On Parmelias on cedars in swamps, common on P. borreri 

 Turn. Beaudette, June 22, 1901, nos. 118 and 121. Warroad, 

 July 1, 1901, no. 311. Oak island, July 8, 1901, nos. 397 and 

 403. Kettle falls, August 13, 1901, no. 1446. Harding, Au- 

 gust 16, 1901, nos. 1501 and 1509. Tower, August 28, 1901, 

 no. 1854. 



263. Buellia glaucomaria (Nyl.) Tuck. 



On Pertusaria sp. on birch, locally common. Warroad, July 



5, 1901, no. 378. 



Not previously reported from Minnesota and new to the Mis- 

 sissippi valley. 



264. Lecanactis chloroconia Tuck. 



On cedars, rare. Emo, July 19, 1901, no. 759. 

 Not previously reported from Minnesota and new to the Mis- 

 sissippi valley. 



