861 
ROSA moschata; var. hort. nivea. 
The Snow-white Musk Rose. 
—*— 
ICOSANDRIA POLYGYNIA. 
Nat. ord. Rosace®. Div. II. Rose. 
ROSA. Suprà vol. 1. fol. 46. 
R. moschata, v. suprà, fol. 829. | 
e. nivea, caule erecto ramoso, foliolis ovato-oblongis acuminatis rugosis, petalis 
magnis obeordatis, 
R. nivea. Dupont. Hort. Gall. 
R. moschata, No. 3. var. à grandes fleurs simples. Lindl. ros. mon. ed. 
Pronville, p. 181. 
Frutex erectus, ramosus, 4 pedalis. Rami atrovirides, glaucescentes, nunc 
inermes, nunc aculeis confertis inequalibus, brevibus, falcatis setisque con- 
Spersi. Folia densa, rigida ferê sempervirentia ; foliola ovato-oblonga, acumi- 
nata, simpliciter serrata, supra rugosa, lucida, glabra, subtus glauca glabrius- 
cula ; petioli et nervi primarii pubescentes, aculeisque sparsis aduncis armati ; 
stipula lineares, integre, adnate, apice subulate. Cymi subquinqueflori, pe- 
dunculati, pedunculo pedicellisque setosis. Bractex ovate, acuminate, re- 
Jlexe, glandulis ciliate. Flores expansi, magni, albi, nunc rubicundi, petalis 
obcordatis 5-7. Tubus calycis ellipticus setosus ; sepala composita, glandu- 
losa. Discus conspicuus. Styli in columnam coaliti. Fructus obovatus, 
glaber, aurantiacus. Sepala decidua. 
This very singular and beautiful variety of Rosa mos- 
chata has been raised by the industry of M. Dupont, a French 
cultivator of roses. As a single rose, it is, unquestionably, 
the most beautiful with which we are acquainted. Its name, 
nivea, expresses well the snow-white aspect of the plant, 
When covered by the multitude of its large white blossoms, 
It is quite hardy, and may be propagated by layers like 
other roses. 
It may appear sufficiently paradoxical to unite this plant 
to a species with which it certainly possesses few technical 
characters in common, and from which it differs so much in 
general appearance; but the same motives which made it 
appear proper, in the Rosarum Monographia, to unite with 
R. arvensis the curious Double Hip Rose of the Gardens, still 
Operate in the arrangement of the subject of this article. 
We are clearly of opinion, that in all those genera which are 
much the objects of cultivation, it is necessary, in order to 
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