NEW HYBRIDS TO AIM AT. 



499 



genus, but operating on different species, the results obtained by 

 hybridisation are contradictory. In practice, then, we cannot foretell the 

 influence which the pollen-bearing parent or the seed-bearer will 

 respectively have upon the offspring. 



It has been shown, then, that the pollen of Rosa lutea is capable of 

 fertilising the Hybrid Perpetuals, if not all of them, at least one or two, 

 and probably a very large number. There still remains, it is true, the 

 sterility of these new hybrids, which it is necessary to partly overcome, 

 even if it cannot be entirely suppressed. I have an idea that this can be 



Fig. 142. — Rosa alba odorata. (The Garden.) 



accomplished by varying the sections on which the new hybridisations 

 are tried. 



The following is the commencement of the trials which M. Allard, the 

 able florist of the Maulevrie, made with seedlings of Rosa Harrissoni * 

 which is considered to be a hybrid, one of its parents being 1 Persian 

 Yellow ' or R. Eglanteria. He obtained numerous specimens with single 

 flowers, white, pink, and yellow, and one semi-double whose fl >wers 

 approach closely, both in colour and shade, to those of Rosa Eglanteria ; 

 but all of them are in other respects like Rosa pimpinellifolia. Rosa 

 Harrissoni likewise possessing most of the peculiarities of Rosa pim- 

 pinellifolia, and the flower of the * Yellow Rose,' it is to be presumed 

 that it is a hybrid between the two. 



* Juurn. Soc. Nat. d'Hort. Fr. 11)01, p. 884. 



K 1 



