WHITE DRYAD 



Dry as octopetala Linnaeus 



White dryad is a very decorative plant in its chosen habitat. It flour- 

 ishes best in a soil of disintegrated limestone, and it is also found cling- 

 ing to rough limestone rocks, where it forms close mats, its green foli- 

 age hiding the interlaced masses of woody stems and dead leaves 

 beneath. Above these mats the beautiful cup-shaped flowers with their 

 golden centers are borne on dainty stems from one to four inches tall. 

 The flowers attract many bees and small flies. The stems and leaves 

 are sticky, and have a resinous odor. 



White dryad belongs to the Rose Family, and is found from Lab- 

 rador and Greenland throughout Arctic America, and in the Rocky 

 Mountains from Utah and Colorado to British Columbia. It occurs 

 also in northern Europe and Asia. 



The sketch was made from plants that grew in Skoki Valley, fifteen 

 miles by trail from Lake Louise, Alberta, Canada, at an altitude of 7,500 

 feet. 



PLATE I76 



