204 BRITISH BOTANY. 



prickly. Leaves compound, with singly- or doubly-toothed leaf- 

 lets; stipules laterally attached to the petioles. Flowers large, 

 solitary or aggregate, axillary or terminal. Calyx-tube urceolate, 

 constricted at the top, increasing after flowering, and fleshy when 

 ripe, the inner surface lined with rough hairs ; limb in five rarely 

 entire divisions. Corolla imbricated before flowering (when in 

 bud). Styles with lateral insertion (not on the centre of the 

 ovary), either free or united above. Carpels numerous, bony, 

 irregular in shape, covered with hairs, inserted on the inner side 

 of the calyx-tube. 



Sect. I. — Carpels stipitate, at least the central ones ; stipes about as long as the 

 carpel. 



§ 1. CANiNiE. Root-shoots archecl ; prickles vxniforni, hooked; leaflets ovate, with- 

 out glands ; divisions of the calyx deciduous, the throat siuTOunded by a thick, ele- 

 vated disc. 



M. canina, L., R. bractescens, R. ccBsia. 

 § 2. E-UBIGINOS^. Koot-shoots arched, with unequal prickles ; leaves glandular ; 

 calyx-divisions persistent, throat with a more or less tliick disc. 

 R. sepium, R. rubiginosa, R. micrantha, R. inodora. 

 § 3. ViLLOS^. Shoots and prickles nearly straight ; leaflets with diverging teeth ; 

 sepals persistent, converging ; calyx-tlu-oat closed by a thick disc. 

 R. hibernica, R. villosa, R. tomentosa. 

 Sect. II. — Carpels sessile or very shortly stipitate ; stipes shorter than the 

 carpel. 



§ 1. PimpineilifolIjE. Shoots acicular (bristly) ; prickles straight or nearly 

 straight ; calyx-divisions persistent ; disc thin or wanted. 



R. Sabini, R. involuta, R. Wilsoni, R. spinosissima, R. rubella. 

 § 3. CiNNAMOME^. Shoots with or without bristles (setae) ; leaflets elongate, 

 without glands ; disc tliin . 



R. systyla, R. arvensis, R. cinnamomea, R. Dicksoni. 



Sect. I. — See above. 



§ 1. CANINJa. 



R. canina, L. Dog-Rose. — e.b. 922. l.c. 351. A. 18. C. 81. 

 Lat. 50-61°. Alt. 0-450 yds. Tem. 52-42°. 



Stems much branched, spreading; prickles of the old wood 

 nearly equal, robust, enlarged, and compressed at the base, ab- 

 ruptly terminating in a hooked point. Leaflets 5-7, ovate or ob- 

 long, doubly toothed, the upper teeth almost connivent ; stipules 

 of the floral leaves dilated, erect. Flowers white or pale-rose, 

 mostly solitary. Divisions of the calyx pinnatifid, reflexed after 

 flowering. Fruit ovate-oblong or globular. 



Flower, June; fruit, August-November. 



There are several varieties and sub-varieties of this Rose, 

 viz. : — 



