Fil/k: LICHENS OF THE NORTHERN BOUNDARY. 213 



1421. Harding, August 14, 1901, no. 1594 and August 20, 

 1901, no. 1622. Tower, August 26, 1901, no. 1793. 



139. Pertusaria multipuncta (Turn.) Nyl. 



On cedars in swamps, frequent. Beaudette, June 22, 1901, 

 no. 125. Warroad, June 29, 1901, nos. 257 and 280 and July 

 1, 1901, no. 288. Emo, July 23, 1901, no. 843. Koochich- 

 ing, July 30, 1901, no. 1019. 



140. Pertusaria communis DC. 



On cedars in swamps, common. Beaudette, June 6, 1901, 

 no. 64. Warroad, June 29, 1901, no. 282 and July 1, 1901, 

 no. 304. Oak island, July 9, 1901, no. 448. Emo, July 18, 

 1901, no. 713. Koochiching, July 30, 1901, no. 1021. Rainy 

 Lake City, August 8, 1901, no. 1282. Kettle falls, August 9, 

 1901, no. 1341 and August 13, 1901, no. 1441- Harding, 

 August 19, 1901, no. 1577. Tower, August 26, 1901, nos. 

 1810 and 1805. 



141. Pertusaria pustulata (Ach.) Nyl. 



On trees, rare. Kettle falls, August 13, 1901, no. 1438. 



142. Pertusaria leioplaca (Ach.) Schaer. 



On trees, frequent. Beaudette, June 19, 1901, no. 65. War- 

 road, June 26, 1901, no. 173, and July 2, 1901, no. 324. Oak 

 island, July 9, 1901, no. 455. Emo, July 18, 1901, no. 703. 

 Koochiching, July 25, 1901, no. 882 and July 26, 1901, no. 899. 

 Rainy Lake City, August 3, 1901, nos. 1166 and 1174, and 

 August 5, 1901, no. 1182. Kettle falls, August 13, 1901, nos. 

 1420 and 1425. Tower, August 29, 1901, no. 1874. 



143. Pertusaria ophthalniza Nyl. ? 



On trees, probably common though seldom seen. Beau- 

 dette, June 24, 1901, no. 133. Mainland, July 16, 1901, no. 

 631. Tower, August 26, 1901, no. 1812. 



Spores are only 100-155 D y 24-45 mic, while published de- 

 scriptions give 160-205 by 80-100 mic. as the size. However, 

 Dr. Arnold so names a plant from Newfoundland having spores 

 only 90-135 by 35-48 mic. 



144. Gyalecta lutea (Dicks.) Tuck. 



On an old Polyporus, rare. Emo, July 23, 1901, no. 

 828. 



But the border of the exciple not radiate. 



