SCIENTIFIC TREATMENT OF THE ARBOEETTJM. 309 



are of course omitted. For the sake of convenience 

 we have marked the alliances and orders, selected for 

 our present purpose, with running numbers, beginning 

 in both cases from unity; but to prevent confusion 

 we have quoted the numeration of "The Yegetable 

 Kingdom" throughout, giving the numbers of its 

 classes and alliances within parentheses, thus : for a 

 class (V. K. IV.,) and for an alliance (V. K. 16.) We 

 beg the reader's attention to the following 



LIST OF ABBREVIATIONS. 



D. Deciduous ; denoting plants shedding their leaves in autumn. 



E. Evergreen. 



SE. Sub-Evergreen ; applied to plants retaining part of their foliage 



through winter. 

 T. Tree. 

 S. Shrub. 



CI." Climber — a plant climbing or twining, and requiring or finding 

 support. 



Tr. Trailing — applied to plants creeping or lying on the ground. 



h. Hardy ; sh. sub-hardy, i. e. hardy in some places but not in others. 



Sp. Species ; v. botanical variety. 



1 



SYNOPSIS 



OF THE NATURAL ORDERS AND GENERA OF PLANTS 'WHICH MAT BE EMPLOYED 

 IN FORMING AN ARBORETUM. 



Class ENDOGENS. (V. K. IV.) 



Alliance 1. LILIALES. (V. K. 16.) 



Ord. 1. LiliaoejE. Lilyworts. (Lindl. 62 ; Loud. 80.) 



Yucca. Adam's Needle. E. S. sh. 4-10 ft. Sp. 10 • v. 2. 

 Euscus. Butcher's Broom. E. S. 2-3 ft. Sp. 4 ; v. 3. 

 Borya. D. S. 5-8 ft. Sp. 3. 



Class DICTYOGENS. (V. K. Y.) 



Alliance 2. DICTYOGENS. (Lindl.) 



Ord. 2. Smilace^:. Sarsaparillas. Lindl. 69 j Loud. 79.) 

 Smites. E. D.Cl. Sp. 16. 



