332 APPENDIX E 



Betula papyrifera Marsh. 



Common and of good size north to the Slave River delta, and 

 occurring in a more or less dwarfed condition on the islands and 

 shores of the eastern part of Great Slave Lake. 



* Betula nana L. Last woods, east shore. Artillery Lake, 



August 6. 

 The dwarf birch was common on the islands of Great Slave 

 Lake, as well as the large lakes to the north-eastward. 



Alnus alnobetula (Ehrh.). Koch. 



Common north to the tree limit. At our main camp on Artil- 

 lery Lake, where this alder was common, the leaves were falling 

 on September 4.- 



Alnus incana (Linn.). Willd. 



Common north to Great Slave Lake. Observed at The 

 Narrows, where it was only a few feet high. On the alluvial 

 banks of the rivers it attains a good size. One examined on 

 lower Slave River, 1 J inches in diameter and nearly 15 feet high, 

 had ten rings of growth; another, 2 inches thick and 20 feet 

 high, had 7 rings. 



* SteUaria longipes Goldie. Fort Smith, Mackenzie, June 30; 



last woods, east shore. Artillery Lake, August 6. 



* Anemone multifida Poir, Fort Smith, Mackenzie, June 30. 



* Anemone patens L. var. Wolfgangiana (Bess.), Koch. Fort 



Smith, MacKenzie, June 30. 

 Common in dry situations throughout the region north at 

 least to Great Slave Lake. It was abundant on Caribou Island. 



Corydalis sempervirens (Linn.). 



Common and in flower near Caribou Island on July 20. 



* Corydalis aurea Willd. Fort Smith, Mackenzie, June 30. 

 This is a common plant nearly throughout the wooded country. 



* Corydalis lutea Gilib. Fort Smith, Mackenzie, June 30. 



