ROSE TRIBE. 



183 



DRYAS OCTOP^TALA (Mountain Avens). 



3. DRYAS (Mountain Avens). 



D. octopetala (Mountain Avens). The only British 

 species ; not uncommon in the mountainous parts of 

 England, Scotland, and Ireland, and at once distin- 

 guished from all other plants of the Order by its oblong 

 deeply-cut leaves, which are white with woolly down 

 beneath, and by its large and handsome white flowers, 

 each of which has 8 petals. Fl. June, July. Perennial. 



