BLACKBERRY. 



169 



able in size and in its general appearance. Figure 71 

 shows a section of the stem of the well known New Ro- 

 chelle Blackberry, which is a variety of 

 this species. 



R, CanadcnsJS. Low Blackberry, 

 Dewberry. Shrubby, trailing slightly, 

 prickly; leaflets three or pedately five to 

 seven, oval or ovate-lanceolate, mostly 

 pointed, thin, nearly smooth ; flowers in 

 racemes with leaf-like bracts ; fruit mostly 

 round, with large grains, sweet and 

 pleasant flavor, ripens earlier than JK. Vil* 

 losus. Very common in dry sandy soils. 



R, llispidllS. Running Swamp Black- 

 berry. Stems slender, shrubby, mostly 

 trailing, with numerous, small, reflexed 

 prickles ; leaflets three, rarely five, smooth, 

 obovate, coarsely serrate, entire toward 

 the base ; flower small, borne on a leafless 

 peduncle; fruit purple or shining black, 

 grains large and few; generally very 

 acid. Common in the Northern States, 



i o* 



in low, damp woods. 



R, CUlieifolius. Sand Blackberry. One to three feet 

 high, shrubby, upright, armed with stout, recurved prickles; 

 branchlets and lower surface of the leaf, whitish, woolly ; 

 leaflets three to five, wedge-obovate, thickish, serrate above ; 

 peduncles two to four flowered ; petals large ; fruit medium 

 size, of good flavor, black, ripens late. Common in New 

 Jersey and southward, in sandy soils. 



R, trivialis, Low Bush Blackberry. Stems shrubby, 

 trailing, bristly and prickly; leaves evergreen, coriaceous, 

 nearly glabrous ; leaflets three or pedately five, ovate- 

 oblong, or lanceolate, sharply serrate, peduncles one to 

 three flowered. Sandy soils, from Virginia southward. 



