336 APPENDIX E 



* Rhododendron lapponicum Wahl. Last woods, east shore, 



Artillery Lake, August 6; near Caribou Island, Great Slave 



Lake, July 19. 

 This beautiful shrub is not found much south of the Barren 

 Grounds, except on the exposed and wind swept islands of Great 

 Slave Lake. 



* Loiseleuria jrrocumbens (L.), Desv. Last woods, east shore. 



Artillery Lake, August 6. 

 This is a characteristic Barren Ground species. 



* Andromeda Polifolia L. Caribou Island, Great Slave Lake, 



July 21. 

 The tiny pink bells of this dainty species dot the mossy banks 

 of most of the islands of Great Slave Lake, and of the treeless 

 stretches to the northward. 



* Arctostaphylos Uva-ursi (L.), Spreng. Fort Smith, Mac- 



kenzie, June 28. 

 Common throughout the region north at least to the limit of 



trees. 



* Arctostaphylos alpina Spreng. Last woods, east shore. Artil- 



lery Lake, August 6. 

 This low herbaceous shrub, now usually referred to the genus 

 ArcUms, was common on the islands of Great Slave Lake, and 

 northward as far as we penetrated. Its insipid fruit was full- 

 grown, but still green, near Caribou Island on July 20; it was 

 fully ripe on our return in early September. Its leaves had 

 turned to a brilliant scarlet on Clinton-Colden Lake in late 

 August. 



Oxycoccus oxycoccus (Linn.). 

 Observed on Caribou Island on July 21. 



* Vaccinium uliginosum L. Last woods, east shore. Artillery 



Lake, August 6. 

 This blueberry is common north to the tree limit. Its berries 

 were ripe on Artillery Lake on September 2. 



