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ROSACEA. 231 
Mr. Baker thinks the British plant is probably the R. systyla 
of Bastard, which has been doubted both by Mr. Borrer and Mr. 
Woods. J am strongly inclined to agree with Mr. Bentham in 
considering this a form of R. canina, to which opinion Mr. H. C. 
Watson likewise inclines. It appears to have no connection with 
R. es, except in the purely artificial character of the united 
styles. 
Columnar-styled Dog-rose. 
French, Rosier & Cotonne en massue. 
The specific name of this Rose comes from the words ovy (syn), together, and orvdoc¢ 
(stylos), a column, in reference to the styles being connected. All the Roses, known 
in our gardens as Banksian Roses, belong to the same division. They are named after 
Lady Banks, and are natives of China. Generally they grow well in the open air 
against a sheltered wall, and succeed better in a dry situation than in a moist one. 
The seeds are not perfected in this country, but are in Spain and Italy. The common 
British species differs very little to the ordinary observer from the ordinary Wild 
Rose. 
SPECIES XVI—ROSA ARVENSIS. JZuds. 
Prare CCCCLXXVI. 
Baker, in Nat. 1864, p. 141. 
Stem with long trailing shoots; prickles scattered, small, 
uniform, not intermingled with aciculi or gland-tipped sete. 
Leaflets oval or oblong-oval; finely and rather remotely and 
unequally serrate, glabrous on both sides, glaucous or whitish- 
green beneath. Pedicels elongate, with lanceolate bracts and a 
few very short gland-tipped setee, sometimes almost naked. Petals 
white. Styles glabrous, united into a long slender column sur- 
rounded by a flatly conical disk without glands; stigmas in a 
roundish-ovoid head. Fruit ovoid or sub-globose, scarlet when 
ripe. Sepals deciduous, short, leaf-pointed, entire or slightly pin- 
natifid. 
1. Rosa repens. Scop. 
Pirate CCCCLXXVI. 
Leaves dull-green above. Pedicels erect. Sepals slightly 
pinnate, shorter than the petals. 
In hedges and woods. Very common, and generally distributed 
in England, rare in Scotland, and probably not native north of the 
Forth and Clyde. 
2. Rosa bibracteata. Bastard. 
R. arvensis y, Borrer, in Hooker's Brit. Fl. ed. i. 
