222 BOTANICAL CLASSIFICATION. 



31. R. INVOLU V TA Smith. The involute-petaled Rose. 



Identification. Smith in Eng. Bot., 2058 ; Don's Mill., 2, p. 569. 



Synonyme. R. nivalis Donn. Hort Cant., ed. 8, p. 170. 



Spec. Char., fyc. Prickles very unequal, and very much crowded. Leaflets doubly 

 serrated, pubescent. Petals convolute. Fruit prickly. Petals pale red, concave. Na- 

 tive of the Hebrides, in tiie Isle of Arran and in Glen Lyon. Shrub, 2 ft. to 3 ft. high, 

 and flowering in June. 



32. R. REVE'RSA Waldst. et Kit. The reversed-prickled Rose. 

 Identification. Waldst. et Kit. Hung., 3, p. 293; Don's Mill., 2, p. 569. 

 Spec. Char., (^c. Prickles setaceous, nearly equal, reflexed. Leaves doubly serrated, 



Subescent. Fruit hispid. Flowers solitary, white, tinged with pink. Fruit ovate, 

 ark purple. Native of Hungary, on the mountains of Matra, in stony places ; growing 

 to the height of from 2 ft. to 5 ft., and flowering in June and July. 



33. R. SABI'NI Woods. Sabine's Rose. 

 Identification. Woods in Lin. Trans., 12, p. 188; Don's Mill., 2, p. 569. 



Spec. Char., tf-e. Peduncles, calyx, fruit, and branches bristly. Prickles scattered, 

 straightish. Leaflets doubly serrated, nearly smooth, with hairy ribs. Sepals pinnate. 

 Flower stalks rather aggregate. Petals fine red. Fruit ovate, bright scarlet. Native 

 of Scotland, near Dunkeld; in England, in Cumberland, Northumberland, and York- 

 shire. 5 ft. to 8 ft. high, and flowering in July. 



34. R. DONIA V NA Woods. Don's Rose. 



Identification. Woods in Lin. Trans., 12, p. 183 ; Don's Mill., 2, p. 570. 

 Synonyme. R. Sabinz 8 Lindl. Ros., p. 59. 



Spec. Char., fyc. Peduncles bractless, bristly, as well as the globular fruit and calyx. 

 Stem bristly and prickly like the downy petioles. Leaflets elliptical, doubly and sharp- 

 ly serrated, hairy on both sides. Petals spreading. Flowers pink, expanded. Seg- 

 ments of the calyx simple. Native of the Highlands of Scotland, particularly on the 

 mountains of Clova, Angusshire. Shrub, 4 ft. to 5 ft. high and flowering in June and 

 July. This rose was named in honor of Don of Forfar; and Sir Edward Smith ob- 

 serves of it: "It is much to be wished, that this rose should afford a permanent 

 wreath in honor of its discoverer, one of the most indefatigable as well as accurate of 

 botanists, who loved the science for its own sake, and braved every difficulty in its ser- 

 vice. He infused the same spirit into his sons [two of whom, Prof. Don, and G. Don, 

 author of Don's Miller, are well known in the botanical world], who are now living evi- 

 dences of his knowledge, and of his powers of instruction." 



V. CENTIFO^IjE Lindl. 



Derivation. From centum, a hundred, and folium, a leaf; because the species con- 

 tained in this section agree in character with the hundred-leaved rose, which is so ex- 

 tensively double as to seem to have a hundred petals. 



Sect. Char., <fyc. Shrubs, all bearing bristles and prickles. Pe- 

 duncles bracteate. Leaflets oblong or ovate, wrinkled. Disk thicken- 

 ed, closing the throat. Sepals compound. This division comprises 

 the portion of the genus .Rosa which has most particularly interested 

 the lover of flowers. It is probable that the earliest roses of which 

 there are any records of being cultivated belonged to this section ; but, 

 to which particular species those of Cyrene or Mount Pangaeus are to 

 be referred, it is now too late to inquire. The attar of roses, which is 

 an important article of commerce, is either obtained from roses belong- 

 ing to this division indiscriminately, as in the manufactory at Florence, 

 conducted by a convent of friars ; or from some particular kind, as in 

 India. It appears, from specimens brought from Chizapore by Colonel 

 Hardwicke, that R. damascena is there exclusively used for obtaining 

 the essential oil. The Persians also make use of a sort which Kaemp- 



