346 



The Rose Garden. 



urn-shaped calyx, which has a limb of five segments, and a fleshy tube, the apex of which is 

 constricted into a ring or glandular disk ; (2) numerous stamens inserted with the petals on the 

 rim of the tube of the calyx ; and (3) numerous dry bony pericarps, which are enclosed in the 

 fleshy calyx-tube. The accompanying section of a Rose-flower will make these peculiarities 

 more intelligible. The segments of the calyx are usually divided in a pinnate manner, but not 

 in all cases, and they are sometimes deciduous. The petals are normally five in number, the 

 five petalled flowers being well represented by the wild Roses of our hedge-rows. The ovaries, 



Fig. 62. BRACTS (indicated at a). 



which are numerous, and enclosed in the calyx-tube, are distinct, bristly, and tipped by the 

 style, which passes up to the orifice of the tube ; these styles are usually separate, but in some 

 few species they are joined together into an elongated column. The leaves of Roses are what 

 are called imparip innate, that is, pinnated with a terminal leaflet, and stipules grow to the 

 sides of their stalks. 



Roses are either erect or scandent shrubs. The genus Rosa, like LiHum, Crocus, and Tulipa, 

 is thoroughly characteristic of the North Temperate Zone. It extends from Britain across 



Fig. 63. DIAGRAMMATIC SECTION OF A Ross FLOWER : 

 at, sepals ; b, petals ; c, stamens ; d, pistils ; e, pericarps. 



Europe, Asia, and America, to the Atlantic, a few outlying types .reaching the Neilgherries and 

 mountains of Abyssinia and Mexico. No Roses, whatever, are tropical in their constitution, 

 and all that are grown at the Cape, Australia, and in other southern temperate regions are intro- 

 duced. The species are so difficult of limitation that their number is computed very differently 

 by different authors. The number of distinct species known in cultivation is about fifty, and 

 they may be conveniently arranged in ten groups, as follows : 



