THE WORTHY USE OF ROSES 331 



tion. The flowers are bright yellow, the leaves small 

 and much divided. 



R. ALPINA. This is the species from which the 

 Boursault Roses have been derived. It is a native 

 of the Alps and Pyrenees. The stems are 4 to 5 

 feet high, and have few or no spines except when 

 young. The flowers are rosy red ; the fruits red, 

 often pear-shaped, and covered with bristles, which, 

 when rubbed, have a turpentine-like odour. 



R. ARVENSIS (or R. REPENS). From this species 

 the Ayrshire Roses have been obtained. It is natur- 

 ally a trailing or climbing plant, having long thin 

 shoots and white flowers. When trained over tree 

 stumps or rough stakes and ultimately allowed to 

 grow at will, it forms tangled masses which are very 

 pretty. But the double forms even the common 

 variety, flore-peno are to be preferred, being espe- 

 cially useful in semi-wild spots. The type is wild in 

 England, and frequently to be seen in hedges and 

 thickets. 



R. CAROLINA For certain positions this is a useful 

 Rose. It has erect stems and forms dense thickets, 

 spreading rapidly by means of the numerous under- 

 ground rhizomes it sends out in all directions. The 

 flowers are purplish rose. A later-flowering variety 

 known as nuttalliana is a stronger grower and has 

 larger flowers. This will flower up to September. 

 R, lucida and R. nitida are, like R. Carolina, natives of 

 North America, and are of similar habit, but they are 

 dwarfer and the leaves are more glossy. All these 

 are apt to become crowded with old stems, and, 



