70 Rose (Rosacea). [No. 8 



Fig. 37. — Low Blackberry. Dewberry. R. Canadensis, L. 



Flowers, with leaf-like bracts, in clusters, on slender, soli- 

 tary cluster-stems. Petals, large, reverse egg-shape, 

 twice as long as the sepals. May. 



Leaflets, three (rarely five or seven), one to one and a half 

 inches long, nearly stemless, oval to broad lance-shape, 

 nearly smooth. 



Fruit, black, half to one inch in diameter, very juicy and 

 sweet, not separating when ripe from the lengthened 

 receptacle. A collection of drupelets. July and 

 August. 



Found, common in dry open ground from Newfoundland 

 to Virginia, and westward. 



A woody vine with valuable fruit. Stem somewhat 

 prickly, and trailing extensively. 



Leaf resembling Fig. 37. — Running Swamp Blackberry {R. 



hispidus, Z.). 



Flowers, small, in clusters of several to many blossoms. 

 Cluster-stems, often bristly. 



Leaflets, three (rarely five), one to two inches in length or 

 smaller on the branchlets. Edges, toothed, entire 

 toward the base. Apex, pointed or on the branchlets 

 sometimes blunt. Base, mostly rounded, or on the 

 branchlets sometimes pointed. 



Fruit, black, of few grains, sour. 



Found, in swampy or low ground from Nova Scotia to 

 Georgia and westward. 



A slender vine, scarcely woody ; trailing several feet, 

 with more or less erect branches eight to twelve inches 

 high. The main stem and the larger leaf-stems are armed 



