ROSE FAMILY. Rosaceae. 



A dwarf Alpine species found on the 

 ra summits of the White Mountains, rather 



Yellow soft-hairy when young, but smooth later, 



June-August and with three coarsely toothed leaflets, 



deep green and somewhat broad. The 

 small yellow flowers are slender-stemmed and general' y 

 solitary. 1-3 inches high. Found about the Lake of 

 the Clouds and elsewhere on Mt. Washington. Poten- 



tilla tridentata, also found on Mt. Wash- 

 Potentilla ington and Mt. Wachusett, is less dwarfed, 



but low-growing. The three leaflets are 



June-August coarsely three-toothed at the tip, smooth 

 and thick. The flowers are white. 1-10 

 inches high. Coast of Mass., northward, and shores of 

 the upper Great Lakes. 



This is the only purple-flowered five 

 Marsh Five- finger and it is therefore readily distin- 

 finger or Pur- . . , . _,. ,.. , 



pleCinquefoil g ul shed from the others. The reddish 

 Potentilla stem is stout, mostly smooth, and a trifle 

 palustris. woody at the base. The leaves have from 



Magenta- 5 _ 7 j ea fl ets w ] 1 i c ] 1 are blunt-tipped, and 



June- August sharp-toothed. The rather pretty flowers 

 are magenta-purple within and pale or 

 greenish without, through the influence of the some- 

 what longer green sepals ; the blossom is nearly one inch 

 broad, and its petals are pointed. 6-20 inches long. In 

 swamps and cold bogs, from Me., south to N. J., and 

 west to Cal. 



This is indeed a shrubby species with 

 !!. ru /.. nearly erect stems, tan brown in color, 

 Potentilla an d quite leafy ; the bark is inclined to 



fruticosa peel off in shreds. The leaves are entirely 



Yellow different from those of the other species ; 



s " . they are toothless, olive yellow-green, with 



5-7 lance-shaped leaflets whose edges 

 curve backward. They are silky hairy. The deep yel- 

 low flowers, with rounded petals are generally an inch 

 broad. 1-2 feet high. It is a troublesome weed in N. 

 Y., western Vt., Mass., and parts of the west. Swamps 

 and wet places, Me., south to N. J., and west. 



