NATIONAL ROSE CONFERENCE. 



219 



marvel of minuteness and elegance, may be introduced from 

 Japan, where it has been recently discovered. 



The Americans have availed themselves of their B. setigera, 

 or Prairie Rose, from which they have obtained some double- 

 flowered varieties. If crossed with B. multifiora, B. indica, 

 and B. scmperflorens, it would doubtless furnish us with some 

 valuable hybrids. Possibly such crosses have already been made. 



The double-flowered varieties of B. moschata have been in 

 cultivation for many centuries. The Noisette is reputed to be a 

 hybrid between B. moschata and some species of the Indices 

 section. If not already done, crossing the Mush Bose with B. 

 gallica should be tried. 



B. scmpervirens and B. arvensis have given many double- 

 flowered varieties. 



Up to the present time B. microcarpa does not appear to have 

 been cultivated in Europe. It is a type to which the attention 

 of Eose-growers may be directed, and they may be able to obtain 

 from it very decorative varieties, worthy rivals to those of 

 B. multifiora. 



Sect. II. — Stylos^, Cretin. 



Styles united together, forming a column very slightly project- 

 ing beyond the disc, much shorter than the stamens ; sepals 

 reflexed after floivering, caducous, the outermost pinnate ; 

 inflorescence many-flowered, with narrow or slightly dilated 

 bracts ; stipules adnate, the upper ones narrow or slightly 

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

 slightly sarmentose; prickles hooked, alternate. 



B. stylosa Desv., 1809. — Western Europe, North Africa, 

 and probably Madeira. 



This section is very imperfectly characterised. It is con- 

 stituted by a Rose with numerous varieties, which has quite the 

 appearance of a fixed hybrid produced by crossing B. canina 

 with some species of the section Synstylie. B. stylosa presents 

 nothing of interest to Rose-growers. 



Sect. III. — Indict, Thory. 

 Styles free, projecting beyond the disc, almost half as long as 

 the stamens; sepals reflexed after floivering .... the outer 

 ones slightly pinnate or entire ; inflorescence one- or many- 

 flowered ; bracts narrow ; stipules adnate, the upper ones narrow. 



