42 JOURNAL OF THE ROYAL HORTICULTURAL SOCIETY. 



Hardy's Rose, a hybrid between the Berberry-leafed Rose (R. berberi- 

 folia Pall.) and R. involucrata of Roxb., better known under the name 

 of R. clinophylla Thory. 



Rosa Lyellii Lindl. Hybrid between the Rose with drooping leaves 

 (R. clinophylla Thory) and the Musk Rose (Rosa moschata). 



The Banksian Rose of Fortune (Rosa Fortuneana), suggested as a 

 hybrid between Rosa laevigata Michx. and the Banksian. 



Rosa polyantha Hort. A hybrid between Rosa multiflora and 

 different varieties of perpetuals. 



Yellow-flowered Pimpernel Rose. M. Crepin believes this to be a 

 hybrid between Rosa lutea and pimpinellifolia . 



Rosa lutea x rubiginosa, obtained by Lord Penzance, about which 

 there was a discussion in the Gardeners' Chronicle in 1871. 



Rose 1 Madame Georges Bruant,' hybrid between Rosa rugosa Thunb. 

 and the Tea Rose ' Sombreuil.' 



The Noisette Rose. Presumed to be a hybrid between the Musk and 

 Indian Rose. 



Rosa hear a passes as a hybrid between Rosa rugosa and R. multi- 

 flora. 



The Damask Rose is described as a hybrid between the Provins 

 Rose and one of the Dog-Roses (R. canina). 



The Boursault Rose. This is supposed to be a hybrid between the 

 Alpine Rose (R. alpina) and an Indian Rose (R. indica). 



The Bourbon is described as a hybrid between the Bengal and 

 Rosa b if era. 



Rosa indica major appears to be a hybrid between the Bengal and 

 the Provins Rose. 



I do not wish to insist any more upon this subject, which, to be treated 

 scientifically, would demand certain experiments for the purpose of 

 verifying the worth of some assertions which are generally somewhat 

 suspected before they could be accepted as being correct. 



Atavic Varieties. 



Atavism is, as everybody knows, a word which serves to point out the 

 likeness of an animal or a plant to its ancestors. It comes from the Latin 

 atavus, a grandfather or ancestor. Now when plants, and especially 

 Roses, are the result of a cross between two very different varieties, 

 belonging to what is called the same species, it follows that they produce 

 fertile seed, and that this seed when sown gives very many varieties 

 presenting some of the characteristics of their ancestors. 



Varieties of the second and even of the third generation often have 

 the same tendency. 



Atavism has played, and still plays, a very large part in the production 

 of varieties in Roses. In fact, although a certain number of Roses of 

 hybrid origin are absolutely sterile, some never producing seed fertilised by 

 their own stamens, there are others which allow themselves t d be fertilised 

 either by a different species, or by their parents, or by a cross derived 

 from a hybrid, in such a manner that it may happen that a Rose-seed 

 may hold in its germ the elements of several different species. When we 



