396 THE BOOK OP ROSES. 



Leaflets, three in number ; oval-lanceolated ; when 



old coriaceous, glossy ; simply serrated, naked. 

 Flowers, large, white, solitary. 

 Flowerstalk, and Tube of calyx, bearing weak, uneven 



bristles. 

 Sepals, spreading, ovate, with a point, entire, dilated 



at the end ; a few bristles at their back. 

 Stamens, numerous. 

 Stigmas, in a mass ; large and woolly. 

 Disk, thickened. 

 Fruit, oblong, red; muricate, with stiff thorns ; crowned 



with indurated sepals. 



This rose is a native of the woods of Georgia, in 

 North America ; where it is said to climb to the sum- 

 mit of forest trees. It is not cultivated in gardens. 



II. Rosa Hystrix. 



SPECIFIC CHARACTERS. 



Branches, flagelliform, green ; armed with numerous, 

 small, stiff, straight, uneven thorns ; a few being 

 large and scythe-shaped ; the small ones deciduous. 



Leaves, distant. 



Stipules, very narrow, united in half the length to the 

 leafstalk ; the detached portion deciduous. 



Leafstalks, without down, having a few crooked thorns. 



Leaflets, three in number ; oval, flat, shining, simply 

 serrated ; dark glossy green on the upper surface, 

 pale on the under ; the midrib prickly. 



Flowerstalk, and Tube of calyx, purple ; bristled with 

 dense stiff hairs and thorns. 



Sepals, durable, rigid, convergent, ovate, pointed, 

 nearly entire ; having a few stiff slender prickles ; 

 some of them on the edges. 



