APPENDIX 



147. Populus ialsamifera, L. — W. 



North shore of Lake Athabasca. 



Limbs, believed to be of this species, were found lying on 



the sand at the forks of the Dubawnt River, having drifted 



down the West Branch to that place. 



148. Populus tremuloides, Michx. — W. 



North shore of Lake Athabasca. 



Esker, near the narrows of Daly Lake. 



The latter locality is the northern limit of the tree in this 

 longitude. On the head-waters of the Thlewiaza River it 

 was found to range as far north as latitude 60° A few 

 small trees were also observed on the raised beaches near 

 Fort Churchill.— J. B. T. 



XXXI. EMPETRACE^. 



149. Empetrum nigrum, L. — W. B. 

 Daly Lake. 

 Hinde Lake. 

 Carey Lake. 



Loudon Rapids, on Dubawnt River. 

 Mouth of Chesterfield Inlet. 

 Ashe Inlet, on Hudson Strait. 



Very little fruit was found on the bushes north of the edge 

 of the Barren Lands. 



XXXII. CONIFERS. 



150. Juniperus communis, L. — W. 



Fort Chipewyari, Lake Athabasca. 

 Esker, near the middle of Daly Lake. 

 North shore of Carey Lake. 



151. Juniperus SaMna, L., var. procumiens, Pursh. — W. 



Fort Chipewyan, Lake Athabasca. 



152. Pinus Banksiana, Lambert. — W. 



On dry sandy or rocky slopes as far north as the north end 

 of Selwyn Lake. 



268 



