EXPLANATION 



IN the body of the work, to assist in the proper 

 pronunciation of the names, an accent is placed after 

 the syllable that should be emphasised. For instance, 

 Tropse'olum, not Tropeeo'lum, as it is commonly pro- 

 nounced. Also Gypso'phila, not Gypsophi'la. 



Nat. Ord. signifies Natural Order. 



Syn. Synonym, or discarded name. 



fl. pi. flore pleno, or double flower. 



