164 Rosaceae 



slender pedicels, white, an inch or more broad'; 

 petals longer than the 6-8 spreading linear 

 sepals ; stamens numerous, anthers bright yel- 

 low; styles conspicuously plumose in fruit. 



Frequent in dry stony ground throughout 

 the Rockies at elevations ranging from 4000 

 to 10,000 feet, forming dense mats of con- 

 siderable size on the surface of the ground; 

 flowering in June. 



Dryas Similar in manner of growth 



Drum- and general appearance to the 



mondu preceding species. Leaves gen- 



Richards. 



Drummond's erall y narrower at th e base, the 

 Mountain- lobes dentate-crenate. Flowers J 

 Avens. an inch long, campanulate, droop- 



ing on a densely woolly pedicel; sepals ovate, 

 acute, black glandular-hairy; petals lance- 

 olate, obtuse, bright yellow, about twice the 

 length of the sepals ; stamens included ; styles 

 numerous, conspicuously plumose in fruit. 



In gravel and loose stony soil throughout 

 the Rockies, especially abundant on river 

 shores and flood-plains, like the previous 



