102 
ROSA provincialis. B muscosa ; fl. pl. albo. 
Double white Moss- Provins Rose. 
ICOSANDRIA POLYGYNIA. 
Nat. Ord. Rosacem. Jussieu gen. 53. 
ROSA. Supra vol. 1. fol. 46. 
R. provincialis. Supra vol. 1. fol. 53. 
di 
For the account of the species we refer to the fifty-third 
article of this work. In that place the single red Moss 
variety of the Provins Rose is the subject, in this the 
double white Moss of the same species. Both of them 
more rare and highly prized than any of the others. The 
one before us, we take it for certain, has originated in a 
plant of the common double red Moss Rose, from the 
flower of which the colour had been discharged, either 
thro' the effect of accident or intentionally by peculiar 
culture. Nor has the first tint resumed its place, but a 
white flower has been already transmitted for more than 
fifteen. years, thro' a numerous series of scions. We 
are informed, that the first plant of this variety was pro- 
duced at Mr. Henry Shailers nursery at Little Chelsea. 
The drawing was made at Messrs. Colville's nursery in the 
King's Road, Chelsea. 
In Jussieu's tribe of Rosacec, besides the Roses, are com- 
prised as co-ordinate subdivisions, the Pomacee, including 
Apples, Pears, Quinces, Medlars, Hawthorns, &c.; the 
Sanguisorbe or Burnets; the Potentille, such as Cinquefoils, 
Strawberries, Raspberries, Avenses, Sc. &c.; the Spiree or 
Meadow-sweets and Drop-worts; the Amygdalee, compre- 
hending Almonds, Peaches, Apricots, Plums, Cherries, 
Sc. &c.; the Prockie, a tropical section, besides others 
whose places do not seem finally decided upon. With the 
greater portion of this vegetable assemblage how many of 
us are familiar, whom the proposition, that the whole is 
connected in affinity by the progressive transitions of its 
constituent species, and circumscribed by a common cha- 
racter, will notwithstanding strike as strange and impro- 
bable. Yet, according to Jussieu, the divisions we have 
VOL, IF L 
