226 



JOURNAL OF THE ROYAL HORTICULTURAL SOCIETY. 



B. sulphured, Aiton, 1789 (R. heinisphaerica, Herrni., 

 1762).— Western Asia. 



B. lutea with single flowers lias been in cultivation for many 

 centuries. Its double variety has only very recently been intro- 

 duced into cultivation. B. punicea, Miller, is only a single variety 

 of it. 



B. sulphured with double flowers dates back many centuries. 

 Its wild form (B. Bapini, Boissier and Balansa, 1859) is of 

 re3ent discovery. 



Sect. XI. — Serice^e, Crcpin. 



Flower tetramerous ; styles free, projecting, almost as long 

 as the inner stamens ; neck of receptacle buried in hairs ; sepals 

 entire, erect after flowering, persistent, crowning the fruit ; in- 

 florescence one-flowered, pedicel without bract; stipules adnate, 

 the upper ones very narrow with auricles much dilated, erect ; 

 leaves on the flowering branches generally 9-foliolate ; stems 

 erect ; prickles straight, regularly geminate, mingled or not 

 with aciculi. 



B. sericea, Lindley, 1820. — Asia. 



This type, so curious on account of its tetramerous flowers, 

 does not seem to have as yet attracted the notice of Rose-growers. 



Sect. XII. — Mlxutifolle, Crepin. 



Styles free, included ; stigmas forming a sessile head over the 

 orifice of the receptacle ; septals erect after flowering, crowning 

 the fruit, persistent, the outer pinnate with spreading appen- 

 dages; inflorescence one-flowered, pedicel xoithout bract; stipules 

 adnate, the upper with very dilated and divergent auricles ; 

 leaves on the flowering branches 5- 7-foliolate ; leaflets incised ; 

 stems erect ; prickles slender, straight, alternate, intermingled 

 with more or less numerous aciculi. 



B. minutifolia, Engelmann, 1882. — California. 



This species has a very distinct appearance, bearing very small 

 leaflets, deeply cut, not toothed as in other species, and requires 

 a fairly warm climate. Its cultivation in the open air would not 

 be possible in the North. 



Sect. XIII.— Bracteatj:, Thory. 

 Styles free, included; stigmas forming a sessile head over the 

 orifice of the receptacle; disc large ; stamens very numerous) 

 sepals entire, reflcxed after flowering ; inflorescence many- 

 flowered with broad incised bracts to the pedicels; stipules 



