714 ROSA. [CLASS XII. ORDKR III. 



5. Cani'n^. Prickles equal, hooked. Leaflets ovate, the serratures 

 converging. Ca lyx segments deciduous before the fruit is ripe. 

 Disk thick, closing up the mouth of the tube. 



14. R. cani'na, Linn. (Fig. 810.) Common Dog Rose. Prickles 

 equal, Looked, much compressed ; leaves sub-coriaceous, smooth, or 

 slightly hairy, acute, and often doubly serrated ; calyx segments 

 pinnate, deciduous ; shoots assurgent. 



Hooker, British Flora, ed. 3. vol. i. p. 234.— Lindley, Synopsis, 

 p. 101. 



a. Leaflets smooth, carinated ; serratures simple. 



Hooker, British Flora, ed. 3. vol. i. p. 239. — R. canma.— English 

 Botany, t. 992.— English Flora, vol. ii. p. 395. 



|S. sarmentacea. Borr. Leaflets smooth, carinated; serratures com- 

 pound. 



Hooker, British Flora, ed. 3. vol. i. p. 239. — Lindley, Synopsis, p. 

 101. — R. sarmentacea, Woods, — English Botany, Supp. t. 2595. — 

 English Flora, vol. ii. p. 391 . 



y. surculosa, Borr. Leaflets smooth, flat ; serratures simple. 



Hooker, British Flora, ed. 3. vol. i. p. 239. — JR. surculosa, Woods. — 

 R. canina, j3, — English Flora, vol. ii. p. 395. 



5. dumetorum, Borr. Leaflets more or less hairy, flat. 



Hooker, British Flora, ed. 3. vol. i. p. 239. — R. dumetorum, Thuil. — 

 English Flora, vol. ii. p. 393.— English Botany, Supp. t. 2610. 



s. Forsteri, Borr. Leaflets more or less hairy, not flat. 



Hooker, British Flora, ed. 3. vol. i. p. 339. — R. collina, Woods. — 

 Lindley, Synopsis, p. 102. — R. Forsteri, Sm. — English Flora, vol. ii. 

 p. 393.— English Botany, Supp. 2611. 



Root with creeping suckers. Shrub more or less straggling, from 

 six to eight feet high, the branches more or less divided, and the shoots 

 erect, or more or lets arched, the bark a bright green, reddish brown 

 on that side towards the sun. Prickles are not generally numerous, 

 more or less hooked, much compressed, and greatly dilated at the 

 base, stout. Leaves with the common footstalk smooth, rarely hairy 

 or glandulous, but generally with a few straight or hooked slender small 

 prickles on the under side. Stipules pale, thin, dilated, reflexed, with 

 a spreading acute point, and generally slightly serrated on the margin, 

 sometimes fringed with a few glands. Leaflets ovate, ovate lanceolate, 

 or oblong, acute, or rounded at the point, nearly sessile, pale or darkish 

 green above, pale and sometimes glaucous beneath, often tinged with 

 red in exposed situations, quite free from pubescence, or slightly scat- 

 tered over with hairs, rarely glandulous, flat or concave, and carinated 

 at the back, the margins simply, doubly, or irregularly serrated with 

 acute converging teeth. Flowers solitary, or numerous, in cymose 

 bunches. Bracteas lanceolate, or ovate lanceolate, with a tapering 

 point, thin, pale, concave, or flatlish, toothed and glandular on the 

 margin, or entire. Petioles and tube of the calyx smooth, sometimes 



