244 PROPAGATION OF PLANTS. 



TILIA (Linden or Bass wood). The common American 

 Linden (T. Americana), is one of the largest and most 

 rapid growing species of the genus. It is also less liable 

 to the attacks of insects and diseases than the European 

 species ; consequently, to be preferred as a stock for all 

 the different varieties and species as yet brought to notice. 

 Seedlings are better than plants raised from cuttings or 

 layers. 



ULMUS (Elm). The varieties of the different species 

 succeed best on the mother stock. That is, the many 

 varieties of the English Elm ( U. campestris), should be 

 grown on the stocks of the original species, and those of 

 the Scotch or Wych Elm (U. montana), on their own 

 species. The common Camperdown Weeping Elm belongs 

 to the last species, and should be grafted on seedling stocks 

 of the same. Of course, in case the proper stocks are not 

 at hand, other closely allied species may be used, but it 

 is always best to select stocks from the species from which 

 the varieties originated. 



CHAPTER XIX. 



INFLUENCE OF CION AND STOCK. 



In selecting cuttings, cions and buds, it is well to keep 

 in mind the fact that they have more or less influence in 

 determining the future value of the plant raised therefrom. 

 Whatever faults or merits are possessed by the parent 

 plant are likely to be transmitted to the offspring, and 

 either, under certain conditions, may be increased er de- 

 creased many fold. If we desire early fruiting, we should 

 select wood for propagation from mature or bearing 

 plants, instead of from the young and immature. But 

 we may readily carry this kind of selection too far, 

 for very early and premature fruiting is not always 

 desirable, especially with trees which need to be of con- 



