XXVI. ROSACEJE I 



329 



3fc 17. R. SULPHU'REA Ait. The sulphur-coloured-flowered Rose. 



Identification. Ait. Hort. Kew, 2. p. 201. , Lindl. Ros., t. 77. ; Don's Mill., 2. p 568. 



Synonymes. R. hemisphorica Herm. Dt'ss. 18. ; It. glaucoph^lla Ehrh. Beitr. 2. p. 69. ; jRbsa lutea 



More pldno Rni. Hist. 1475. No. 31. ; R. lutea Brot. Fl. Lu$. I. p. 337. ; the double yellow Rose. 

 Engravings. Lindl. Ros. t. 77. ; Bot. Reg., t. 46. ; and our jig. 568. 



Spec. Char., $c. Stipules linear, divaricate, 

 dilated at the apex. Leaflets glaucous, flattish. 

 Tube hemispherical. (Don's Mill.) Stem 

 prickles unequal, scattered. A deciduous 

 shrub. Levant. Height 4 ft. to 10 ft. In- 

 troduced before 1629. Flowers fine trans- 

 parent yellow, double ; July. 



This sort does not flower freely, except in 

 open airy situations ; and, if trained against a 

 wall, exposed to the north or east rath IT than 

 to the south. Its flower buds are apt to burst 

 on one side before they expand, and conse- 

 quently to become deformed ; to prevent this, 

 the blossom buds should be thinned, and care 

 taken that they have abundance of light and air. 

 Watering it freely in the flowering season is found 

 advantageous ; and the shoots, in general, ought 

 not to "be shortened. This beautiful species 

 is said to flower freely, if grafted on the musk 

 cluster at 8 or 10 feet from the ground ; or it will do well on the China rose. 



& 18. R. SANGUISORBTFO X LIA Donn. The Burnet-leaved Rose. 



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



Synonymes. R. spinosissima var. t sauguisorbifblia Lindl. Ros. p, 51. ; R. spinos. var. macroph^lla 



Ser. in Dec. Prod. 2. p. 609. 

 Engraving. Onvfig. '., in p. 



Spec. Char., fyc. Tall. Prickles nearly equal. Leaflets 9 11, oblong, gla- 

 brous, simply serrated. Fruit globose, depressed, dark. (Don's Mill.) An 

 erect shrub. Habitat unknown, most probably Europe. Height 3 ft. to 5 ft. 

 Flowers white; May and June. Fruit black ; ripe in September. 



Easily distinguished by the number of its leaflets, the shortness of its pe- 

 duncles, and by its globose depressed fruit. 



Iphurea. 



19. 



R. GRAN T DIFLO^RA Lindl. 

 Rose. 



B. Species Natives of Siberia. 

 The large-flowered 



Identification. Lindl. Ros., p. 5. ; Don's Mill., 2. p. 5G9. 

 Synonyme. R. pimpinellifblia Bicb. Fl. Taur. 2. p. 394. 

 Engravings. Bot. Reg., t. 888. ; and our fig. 569. 



Spec. Char., $c. Branches without bristles. Prickles 

 nearly equal, distant. Leaflets flat, glabrous, simply 

 serrated. (Don's Mill.) A prickly shrub. Siberia. 

 Height 4ft. to 6ft. Introduced in 1818. Flowers 

 white ; May and June. Fruit dark ; ripe in Sept. 



Differs from R. spinosissima, though scarcely so 

 much as to render it a distinct species. 669 R . 



R. acicularis Lindl., and R. oxyacantha Bicb., are described in our first 

 edition. 



C. Species Natives of North America and Siberia. 

 20. R. LUTE'SCENS Pursh. The yellow American Rose. 



Identification. Pursh Fl. Araer. Sept., vol. 2. p. 735. ; Lindl. Ros., p. 47. ; Don's Mill., 2. p. 568. 



Synonyme. 

 Engravings. 



R. hispid* Curt. Bot. Nag. t. 1570. 

 Lindl. Ros., t. 9. ; Bot. Mag., 1. 1570. ; and our Jig. 570. 



