60 THE BOOK OF ROSES. 



Rosa trifoliata, or three-leaved, ( the Rosa 

 sinica of Lindley), But Monsieur Prevost, 

 by whom it is extensively cultivated, obtained, 

 at the first sowing, a variety having five leaf- 

 lets. The number constantly varies from five 

 to thirteen, and the leaf cannot be accepted 

 as forming the basis of a species. 



OF THE STIPULES. In the Rosa rapa, the 

 stipules are sometimes straight, sometimes 

 much dilated ; some are simply toothed at 

 the edge, some glandulous. In the species they 

 are flat ; in the variety, rolled underwards, as 

 in the single Rosa rapa, (of Prevost). In the 

 Provins, Hundred-leaved, Damask, and others, 

 every possible distinction may be noticed in the 

 stipules of different varieties of the same species. 



Having now passed in review the specific 

 characters of each several organ of the plant, 

 and proved that nearly all are uncertain and 

 inauthoritative, we will present a table of com- 

 parison, showing the distinctions between the 

 Rosa alba and the Cuisse de Nymphe, one 

 of its varieties ; and in addition, (to avoid 

 the inference that hybridity may have been 

 the origin of the discrepancy,) we subjoin 

 the Placidia, (of Vibert,) created by Monsieur 

 Prevost, jun., by fixing, by graft, a variety 

 accidentally produced on the branch of a Cuisse 

 de Nymphe. 



