ICOSANDRIA-POLYGYNIA. Rosa. 391 



Dr. Afzelius publishes his plant as indubitably a distinct species 

 from canina, and that it is so I think none can doubt, unless, 

 like the French botanist Gerard, we reduce the whole genus 

 of Rosa to one species. Dr. Swartz sent the same as R. collina 

 of Jacquin ; an error easily corrected by an original specimen 

 in my hands from that celebrated author, in which the Jiower- 

 stalks are very bristly, the leaflets roundish, simply serrated, 

 not glandular, nor at all glaucous. 



15. R. sarmentacea. Trailing Smooth-leaved Rose. 



Fruit broadly elliptical, naked. Flower-stalks aggregate, 

 smooth or minutely bristly. Calyx strongly pinnate. 

 Prickles hooked. Leaflets ovate, doubly serrated, very 

 smooth. 



R. sarmentacea. Swartz MSS. Woods Tr. of L. Soc. tj, 12. 213. 



R. glaucophylla. Winch Geogr. Distrib. 45. 



R. canina. Roth Germ. v. 2. p. 1. 560. Curt. Lond.fasc. 5. t. 34. 



In hedges and bushy places common. 



Shrub. Jime, July. 



Stem 8 or 10 feet high, with long, spreading, prickly, green or 

 brownish branches. Prickles hooked and strongly deflexed, 

 compressed, variously scattered, often in pairs under the in- 

 sertion of the leaves or young branches ; their bases dilated, 

 but not depressed. Leaflets 5 or 7, ovate, acute, doubly and 

 sharply serrated, with glands interspersed, very smooth on 

 both sides ; the upper side either greyish and opaque, or more 

 seldom of a shining green ; the under sometimes glaucous. 

 Footstalks usually quite destitute of hairiness, but more or less 

 glandular, as well as furnished with hooked prickles ; some- 

 times the upper edge is hairy. Stipulas somewhat dilated, 

 smooth, green, serrated, and vslightly glandular; the upper- 

 most changed to ovate, pointed, often more glandular, bracteas. 

 Flower-stalks seldom solitary, usually 3 or 4 together and quite 

 smooth ; sometimes besprinkled with small glandular hairs. 

 FL pink, fragrant. Tube of the calyx elliptical, rather narrow, 

 contracted into a neck at the top, quite smooth and naked ; 

 segments of the limb deciduous, pinnate, with numerous, long, 

 pointed, often broad and sometimes pinnatifid, leaflets, glandu- 

 lar and bristly at their edges. Fruit elliptical or ovate, scarlet, 

 as grateful to the palate probably as that of the real R. canijia, 

 with which this equally common plant is generally confounded. 

 The combined styles certainly protrude in some degree, even 

 in Mr. Woods's specimens as well as Dr. Swartz's, approaching 

 to the character of R. systyla and arvensis, but are much shorter 

 than in those species, nor is the disk, or Jloral receptacle, so ele- 

 vated as in R. systyla. 



Mr. M'oods has quoted Roth's carina, probably because that 



