NATIONAL ROSE CONFERENCE. 



225 



Crossed with one or other of the forms of the section Indices, it 

 has given rise to the hybrids known under the name of 

 Boursault Roses. Others of the Cinnamomece will doubtless be 

 objects of attention on the part of Rose-growers, and will one 

 day contribute to our collections of cultivated Roses. 



Sect. IX. — Pimpinellifolle, Be Candolle. 



Styles free, included ; stigmas forming a sessile head over 

 the orifice of the receptacle ; sepals entire, erect after flowering \ 

 persistent, crowning the ripe fruit; inflorescence one flowered 

 (very rarely many-flowered by accident); pedicel without bract ; 

 stipules adnate, the upper ones narrow, with abruptly dilated 

 and very divergent auricles ; average leaves on the flowering- 

 branches usually d-foliolate ; stems erect ; prickles straight, 

 alternate, mixed or not with aciculi. 



B. piinpinellifolia, Linnaeus, 17G2 (R. spinosissima, 

 Linnaeus, 1753). — Europe, Asia. 



B. xanthina, Lindley, 1820 (R. platyacantha, Schrenk ; R. * 

 Eca?, Aitchison, 1880).— Asia. 



B. piinpinellifolia has given origin to many double-flowered 

 garden varieties. It appears to have been crossed with B. lutca, 

 and it is probably to this hybridising that we owe a yellow-flowered 

 Rose which is intermediate between these two types. In a 

 wild condition B. piinpinellifolia hybridises naturally with B. 

 alpina, B. canina, B. rubiginosa, and probably with B. tomcntosa 

 and B. villosa. 



B. xanthina, which has yellow flowers, is grown in a double 

 form in China. 



Sect. X. — Lute.e, Crepin. 

 Styles free, included ; stigmas forming a sessile head over 

 the orifice of the receptacle ; neck of receptacle hidden by a felly 

 collar of hairs ; sepals erect after flowering, persisten t, crowning 

 the fruit, the exterior pinnate, with erect non-spreading 

 appendages ; inflorescence one-flowered, pedicel without bract, 

 or many-flowered without bracts to the primary pedicel ; stipules 

 adnate, the upper more or less narrow, with dilated diverging 

 auricles ; leaves on the flowering branches 5- 7-foliolate ; stems 

 erect ; prickles straight or hooked, alternate, mingled or not 

 with glands or glandular aciculi. 



B. lutca, Miller, 1768 (R. Eglanteria, Linnaeus, 1753 ; R, 

 fcetida. Herrm., 17G2). — Western Asia. 



