Classification 113 



Again, the number of Iris lovers finding pleasure in 

 endeavoring to produce new varieties by cross-pollina- 

 tion, is constantly increasing. As satisfactory results 

 are likely to be more frequently obtained by using 

 varieties of the same, or of closely allied rather than 

 of widely different species (see under Hardiness in 

 Chapter V, and under Results of Cross-Fertilization 

 in Chapter X), a knowledge of the species to which 

 they belong will greatly aid in selecting varieties for 

 experiments. Hence Iris catalogs are additionally 

 helpful when they give not only a description of the 

 flowers of the varieties therein listed, but also the 

 species to which they severally belong. 



When the species is given, unless both parents are 

 named the species is, usually, that of the seed parent. 



