Contr. Nat. Herb., Vol. 22. 



Plate 42. 



A. Dwarfed Trees at Swiftcurrent Pass. 



A characteristic formation of the Iludsonian Zone. Tlie trees are mostly alpine fir and whitebark 

 pine and average about 2 meters in height. Their branches extend to the ground, and in the 

 more exposed places the trunks are often prostrate. 



B. Meadow near Granite Park. 



One of the flower fields of the Hudsonian Zone. The flowers are mostly showy fleabane (Erigeron 

 salsuginosus) , but there was present an equal amount of red Indian paintbrush not visible in 

 the photograph. The trees are chiefly alpine fir. The hazy appearance of the distant portions 

 of the view is due to smoke from forest fires. 



