Preface. 
in the smaller one, even if they have been slightly 
abbreviated in order to bring them within the scope 
of a cheap book. The nomenclature employed in the 
larger work has been followed in the smaller one, 
while the genera and species have for facility of 
reference been given alphabetically. In the generic 
cross-references only those have been kept up that 
are usually met with in nurserymen's catalogues and 
trade lists generally. Similarly, with regard to the 
synonyms. By that means it is hoped that the book 
will be useful to that very large class, who, in making 
a selection of plants, require to know both the 
correct names and mere catalogue names that are 
often the reverse of being correct. 
