490 JOURNAL OF THE ROYAL HORTICULTURAL SOCIETY. 



I have assumed that all hybrids raised between varieties of flexuosa 

 and other species (or varieties of such other species) produced the same 

 hybrids as were produced by the interbreeding of typical forms. In other 

 words I have altogether ignored all question of varietal forms. I have 

 also ignored the question of mother- kin. Certainly from the florist's 

 point of view the question of variety and of mother- kin may be of great 

 importance, but from the standpoint of botanical nomenclature it is now 

 generally accepted that neither of these causes influences hybrid characters 

 to any appreciable extent. Personally I make this reservation, that I do 

 not accept these allegations of sameness as having been proved ; but at 

 the same time sufficient evidence has been accumulated on which to found 

 a working hypothesis of sameness. 



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