S9G ICOSANDRIA— POLYGYNIA. Rosa. 



R. collina. Engl. Bot. v. 27. t. 1895 ; excluding the syn. 



/3 lanceolata. Lindl. ibid. Leaflets ovate-lanceolate. Fruit sphe- 

 rical. 



7 Monsonise. Lindl. ibid. Stem more dwarf, erect, many-flowered ; 

 branches occasionally bristly. I have not seen this. 



" R. collina Monsonise. Redout. Ros. v. 3. 67." Sabine. 



In hedges and thickets. 



Common in Sussex. Mr. Borrer. At Walthamstow, Quendon, 

 and Clapton, near London. Mr. E. Forsier. At Donnington 

 castle, Berkshire. Mr. Bicheno. Near Penshurst, Kent, and 

 Hornsey, Middlesex. Mr, Woods. Hills in the south of Scot- 

 land ; Mr. Hopkirk. Hooker. 



Shrub. June, July. 



"A slender shrub, from 8 to 12 feet high." Woods. Prickles 

 hooked, with a greatly dilated base ; sometimes on the main 

 stem large, conical, with a small curved point, compressed, well 

 compared by Mr. Woods to a parrot's beak. Lcfifiets 5, more 

 rarely 7, elliptic-ovate ; in /3 more lanceolate j acute, simply 

 serrated ; smooth above ; ribs for the most part hairy beneath. 

 Eoolstulks glandular and minutely prickly, somewhat downy. 

 Utipulas linear, acute, downy at the edges, and either glandular 

 or serrated ; the uppermost changed for 2 or 3 lanceolate brac- 

 teas. Flower-stalks aggregate, various in number, rough with 

 many glandular bristles. Tube of the calyx elliptic-oblong, 

 brownish, smooth except at the veiy base ; segments of the 

 limb copiously pinnate, with long, narrow, taper-pointed, entire, 

 or slightly glandular, smooth leaflets. Fl. fragrant, concave, 

 pink or almost white. Floral receptacle conical. Styles united 

 into a simple, prominent, furrowed, but not hairy, column, 

 which gave rise to the name. Stigmas separate, smooth. 

 Fruit ovate-oblong, in j3 globular, smooth, scarlet, stripped of 

 the segments of the calyx, but crowned with the prominent 

 floral-receptacle and permanent siyles. 



Tlie su]3posed variety y, to which Mr. Sabine first gave the 

 name of R. Monsonicr, was found in a hedge near Watford, by 

 Miss Monro, from whence it was removed to the garden of 

 Lady Monson. It is described as very beautiful, having stout, 

 erect stems, bearing large bunches of most elegant Jlowers. 

 Mr. Lindley says the fruit is of a more orange red than the usual 

 hue of R. systyla. The bristly branches indicate a far different 

 tribe. 



22. R. arvensis. White Trailing Dog Rose. 



Fruit globose or elliptical, smooth. Flower-stalks glandu- 

 lar. Calyx pinnate, deciduous. Prickles hooked, scat- 

 tered. Leaflets simply serrated. Floral receptacle 

 slightly convex. Styles combined, smooth. 



