BOTANICAL CLASSIFICATION. 221 



25. R. spiNosi'ssiMA L. The most spin)'-, or Scotch, Rose. 



Identification. Lin. Fl. Suec, 442 ; Sp., 491 ; Don's Mill., 2, p. 568. 



Spec. Char., d^c. Prickles unequal. Leaflets flat, glabrous, simply serrated. 

 A dwarf compact bush, with creeping suckers. Flowers small, solitary, white or 

 blush-colored. Fruit ovate, or nearly round, black or dark purple. Native of 

 Europe ; plentiful in Britain. Shrub, I ft. to 2 ft. high ; flowering in May and 

 Jime. 



Varieties. A great many varieties have been raised of this rose, with flowers 

 double, semi-double, white", purple, red, and even yellow. The fii-st double varie- 

 ty was found in a wild state, in the neighborhood of Perth. 



26. R. hibe'rnica Smith. The Irish Rose. 



Identificaiion. Smith in Engl. Bot., 2196 ; Don's Mill., 2, p. 569. 



Spec. Char., tf-c. Prickles unequal, slightly hooked, smaller ones bristls-formed. 

 Leaflets ovate, acute, simply serrated, with the ribs hairy beneath. Sepals pinnate. 

 Fruit nearly globular, smooth, as well as the peduncles. Flowers small, light blush- 

 colored. Fruit orange-colored. Native of Ireland, in the counties of Derry and Down, 

 in thickets. A shrub, from 4 ft. to 6 ft. in height, and liowering from June to Novem- 

 ber. 



27. R. oxyaca'ntua Bieb. The sharp-prickled Rose. 



Identification. Bieb. Fl. Taur., 3, p. 338 ; Don's Mill., 2, p. 569. 



Spec. Char., (f^c Stems very prickly. Prickles setaceous, reversed. Petioles prick- 

 ly and glandular. Leaflets sharply and simply serrated, glabrous. Sepals undivided. 

 Peduncles clothed with glandular bristles; when in fruit, reflexed. Fruit nearly glo- 

 bose, glabrous. Flowers red. A native of Siberia. A shrub, from 3 ft. to 5 ft. high, 

 and flowering in June and July. 



28. R. SANGUisoRBiFo^LiA Donii. The Burnet-leaved Rose. 



Identification. Donn Hort. Cant., ed. 8, p. 169; Don's Mill., 2, p. 569. 



Synonymes. R. spinosissima var. i sanguisorbifolia Lindl. Ros., p. 51; R. spinos. 

 var. macrophy'Ua Scr. in Dec. Prod., 2, p. 609. 



Spec. Char., tf-c. Tall. Prickles nearly equal. Leaflets 9^11, oblong, glabrous, 

 simply serrated. Fruit globose, depressed, dark. Flowers white. This plant is easily 

 distinguished from the last, by the greater number of its leaflets, the shortness of its 

 peduncles, and by its globose depressed fruit. It is a shrub, from 3 ft. to 5 ft. high, and 

 flowering in May and June. 



29. R. GRAVDiFLO^RA Lindl. The large-flowered Rose. 



Idmtijimticm. Lindl. Ros., p. 53 ; Bot. Reg., t. 888 ; Don's Mill., 2, p. 569. 



Synonyme. R. pimpinellifolia Bieb. Fl. Taur., 2, p. 394. 



Spec. Char., <^c. Branches without bristles. Prickles nearly equal, distant. Leaf- 

 lets flat, glabrous, simply serrated. Flowers white. Fruit dark. Native of Siberia; 

 growing to the height of from 4 ft. to 6 ft. and flowering in May and June. Of this 

 rose Dr. Lindley remarks, that it differs from R. spinosissima, though scarcely so much 

 as to render it a distinct species. " However," he says, " it is too remarkable a plant 

 to escape notice ; and, if it should hereafter be reduced to R. spinosissima, it must 

 stand as a distinct variety." 



30. R. MYRiACANTHA Dcc. Thc myriad-pricklcd Rose. 



Ideniifwation. Dec. Fl. Fr., 4, p. 439 ; Don's Mill., 2, p. 569. 



Synonymes. R. par\'ifolia Pall. Ross., 621; R. provincialis Bieb. Fl. Taur., 1, p. 

 396 i ; R. spinosissima var. n myriacantha Ser. in Dec. Prod., 2, p. 603. 



Spec. Char., (^-c. Prickles unequal, larger on^s dagger-formed. Leaflets glandular, 

 glabrous, orbicular. Flowers white. Native of Dauphine, and near Montpelier; grow- 

 ing from 1 ft. to 2 ft. high, and flowering in May and June. According to Dr. Lindley, 

 this rose forms a diminutive .shrub, with almost simule and erect shoots, resembling, in 

 many respects, R. spinosissima in a stunted state; though the glands on its leaves ap)- 

 pear sufficient to prevent the two sorts from being mistaken for each other. 



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