196 MINNESOTA BOTANICAL STUDIES. 



tie falls, August 10, 1901, no. 1366. Harding, August 19, 

 1901, nos. 1583 and 161 2. 



25. Parmelia perlata (L.) Ach. var. ciliata (DC.) Nyl. 



On mossy shaded rocks, rare. Rainy Lake City, August 5, 

 1901, no. 1223. 



Very similar to plants referred to P. -perforata (Jacq.) Ach. 

 and P. crinita Ach. from the Superior region. 



Not previously reported from Minnesota. 



26. Parmelia tiliacea (Hoffm.) Flk. 



On trees, common. Beaudette, June 18, 1901, no. 9. War- 

 road, June 25, 1901, no. 152. Emo, July 18, 1901, no. 693. 

 Koochiching, July 26, 1901, no. 922. Rainy Lake City, Au- 

 gust 2, 1901, no. 1125. Kettle falls, August 13, 1901, no. 

 1417. Harding, August 17, 1901, no. 1560. Tower, August 

 23, 1901, no. 1698. 



27. Parmelia borreri Turn. 



On trees and rocks, rare. Beaudette, June 22, 1901, no. 

 114. Oak island, July 10, 1901, no. 517. Emo, July 20, 1901. 

 no. 777. Kettle falls, August 15, 1901, no. 1496. 



28. Parmelia borreri Turn. var. rudecta Tuck. 



On rocks and trees, especially common on cedars in swamps. 

 Beaudette, June 22, 1901, no. in. Warroad, June 24, 1901, 

 267. Koochiching, July 29, 190 j,, no. 989. Rainy Lake City, 

 August 3, 1901, no. 1 136. Kettle falls, August, 12, 1901, no. 

 1395. Tower, August 26, 1901, no. 1788. 



29. Parmelia saxatilis (L.) Fr. 



On trees and rocks, common especially on cedars in swamps. 

 Beaudette, June 18, 1901, no. 29, June 22, 1901, no. 112 and 

 June 24, 1901, no. 129. Warroad, June 25, 1901, no. 166 and 

 July 4, 1901, no. 355. Oak island, July 9, 1901, no. 435. 

 Emo, July 19, 1901, no. 723 and July 20, 1901, no. 768. 

 Koochiching, July 29, 1901, no. 999. Harding, August 16, 

 1901, no. 1506. Tower, August 24, 1901, no. 1748 and August 

 27, 1901, no. 1842. 



30. Parmelia saxatilis (L.) Fr. var. sulcata Nyl. 



On trees, frequent. Beaudette, June 18, 1901, no. 14. War- 

 road, June 25, 1901, no. 170. Flag island, July 12, 1901, no. 

 536. Koochiching, July 25, 1901, nos. 886 and 896 and July 



31. 1901, no. 1056. Rainy Lake City, August 1, 1901, no. 

 1082. Kettle falls, August 12, 1901, no. 1380. Tower, Au- 

 gust 23, 1901, no. 1710. 



