476 REPORT OF NEW JERSEY STATE MUSEUM. 



dd. Leaves more coarsely and deeply serrate, infra-stipular, 

 prickles longer, stipules more dilated. 



e. Prickles decidedly curved, leaves somewhat shining above. 



R. virginiana, p. 485 

 ee. Prickles straight, leaves dull above. R. humilis, p. 485 



cc. Leaf rachis very glandular, leaflets doubly serrate, densely resin- 

 ous beneath. [R- rubiginosaY 

 bb. Small, in dense racemous panicles, leaves simple, stem not prickly. 



c. Leaves densely tomentose beneath. SpircEa tomentosa, p. 477 



cc. Leaves glabrous beneath, flowers whitish. S. latifolia, p. 477 



aaa. Flowers white. 



b. Woody shrubs. 



c. Flowers small, in dense corymbs or racemous panicles, leaves 

 simple, stems not prickly. 



d. Flowers in umbel-like corymbs, pods membranaceous purplish, 

 leaves palmately lobed. ' Opulaster opulif alius, p. 477 



dd. Flowers in racemous panicles. Spiraa latifolia, p. 477 



cc. Flowers large. (Blackberries and Raspberries.) 



d. Fruit cap-shaped, fitting over the receptacle from which it 

 separates when ripe, leaves white beneath. 



Rubus occidentalis, p. 478 

 dd. Fruit not separating from the receptacle, forming a solid 

 berry of numerous segments. 

 e. Leaves white tomentose, beneath. R. cuneifolius, p. 479 

 ee. Leaves smooth or velvety beneath, not white. 



/. Branches of the inflorescence prickly and glandular. 



R. argutus, p. 479 

 //. Branches of the inflorescence pubescent, but nearly or 

 quite devoid of prickles or glands. 



R. frondosus, p. 480 

 bb. Trailing vines. 



c. Leaves 3-5 foliate, stems prickly. 



d. Fruit black, leaves membranaceous, not shining. 



e. Flowers several on each raceme. R. villosus, p. 480 



ee. Flowers solitary. R. v. enslenii, p. 480 



dd. Fruit reddish, leaves subcoriaceous, shining. 



R. hispidus, p. 480 

 cc. Leaves round — heart-shaped, crenate. Dalibarda repens, p. 481 

 ccc. Leaves 3 foliate, running only by stolons. 



Pragaria virginica, p. 481 

 bbb. Herbs, not trailing. 



c. No stem, flower peduncles arising from root, leaves 3-foliate, 

 plant stoloniferous. Pragaria virginica, p. 481 



cc. A common stem present. 



d. Leaves regularly 3-foliate, almost sessile, petals linear lanceo- 

 late. Porteranthus trifoliatus, p. 478 

 dd. Leaves pinnate, 3-foliate or entire, petals not linear lanceolate. 



' Sweetbriar, well established along the coast strip, in thickets. 



