ONE-LEAF BOG-ORCHID 



Hahenaria obtusata (Pursh) Richardson 



This orchid is exceptional in having but a single basal leaf The 

 plant grows on the mossy banks of streams or in boggy places, de- 

 lighting in the peaty soil, where other members of the genus Habe- 

 naria flourish. Its green color renders it inconspicuous and easily 

 overlooked, especially when the larger, white, sweet-scented varieties 

 are its near neighbors. 



This species ranges from Maine, New York, and Colorado and 

 northward to Newfoundland and Alaska. 



This specimen was found at Hillsdale, eleven miles northwest of 

 Banff, Alberta, at an altitude of 4,000 feet. 



PLATE 76 



