716 KOSA. fOLASS XII. ORDKB III. 



Such is the account which Mr. Borrer has given of this plant ; and 

 he remarks further, " I leave it for future consideration, having seen 

 only specimens kindly communicated by Mr. Woods, which agree 

 entirely as far as they go with his description ; but seem very closely 

 allied to his R. collina" (R, canina, t. Forsteri). From our own 

 observations we are disposed to consider this a variety of R. canina, 

 so inconstant and intermixed are the characters that would seem to 

 distinguish it as a species. We have now before us a plant agreeing 

 with the above characters, except that the calyx tube is oblong, not 

 globose ; and another with the leaflets doubly not simply serrated, and 

 but slightly downy, but the bractea is very large, serrated, and 

 longer than the fruit. We, however, leave it as it stands, in the words 

 of Mr. Borrer, and perhaps further observation will lead to more 

 definite conclusions. 



16. R. cce'sia, Smith. (Fig. 812.) Glaucous Dog Rose. Prickles 

 numerous, uniform, strongly hooked ; leaflets doubly serrated, and 

 downy, ovate, glaucous; calyx segments pinnate, deciduous; fruit 

 elliptical, smooth. 



English Botany, t. 2367. English Flora, vol. ii. p. 390. Hooker, 

 British Flora, ed. 3. vol. i. p. 242. Lindley, Synopsis, p. 102. R. 

 canina, collina. De Cand. Prod. 2. p. 614. 



Root with spreading suckers. Shrub from four to six feet high, 

 erect, much branched, the stem and old branches with brown bark, the 

 shoots and young branches of a glaucous green. Prickles uniform, 

 numerous, stout, much booked, compressed and dilated at the base. 

 Leaves with the common footstalk downy, and more or less glandular, 

 and sometimes with a few slenfler prickles on the under side. Stipules 

 pale, thin, dilated, concave, with acute points, more or less hairy, and 

 glandulous on the margin. Leaflets ovate, or elliptic ovate, acute, of 

 a glaucous green, paler beneath, and more downy than above, more or 

 less doubly serrated, often irregularly. Flmvers solitary, sometimes 

 several together. Peduncles naked, or sparingly scattered over with 

 hairs. Bracteas broad, thin, pale, elliptical, pointed, downy, and 

 glandulous. Calyx with an elliptical naked glaucous tube, becoming 

 of a brownish purple colour, its segments dilated at the base, narrow, 

 and elongated at the point, with irregular narrow pinna?, and more or 

 less downy and glandular, or smooth, and only downy and glandular 

 on the margins. Petals obcordate, pale pink, or white. Styles slightly 

 prominent and hairy. Stigmas in a round compact mass. Fruit 

 " ovate urceolate, scarlet, soft and pulpy when ripe, before which it 

 loses the segments of the calyx." 



Habitat. Highland valleys of Perthshire and Argyleshire, Scot- 

 land; Northumberland and Durham. Mr. Robertson. Near Belfast 

 and Dungiven, County of Derry, Ireland. 



Shrub ; flowering in June and July. 



How far we are correct in retaining this as a species rather than 

 considering it a variety (as De Caudolle, Koch, and others, have done,) 



