236 BULLETIN 68. 



Populus dilatata = P. nigra, var. Italica. 



Populus Dudleyi = P. balsamifera, var. viminalis. 



Populus elegans = P. nigra, var. elegans. 



Populus Eugenie = P. nigra. 



Populus fastigiata = P. nigra, var. Italica. 



Populus glandulosa = P. monilifera. 



Populus Grceca = P. tremuloides. 



Populus Grcsca pendula = P. grandideutata. 



Populus Hudsonica = P. nigra. 



Populus Italica = P. nigra. var. Italica. 



Populus laurijolia of some = P. balsamifera, var. intermedia. 



Populus laurifolia of some = P. balsamifera, var. viminalis. 



Populus Lindleyana = P. balsamifera, var. viminalis. 



Populus macrophylla = P. candicans. 



Populus nigra pendula = P. grandidentata. 



Populus nivea = P. alba, var. nivea. 



Populus Nolestii = P. balsamifera, var. latifolia. 



Populus Ontariensis = P. candicans. 



Populus Pannonica = P. nigra, var. Italica. 



Populus Petrovski = P. laurifolia. 



Populus Polonica = P. nigra, var. Italica. 



Populus pyramidalis = P. nigra, var. Italica. 



Populus pyramidalis suaveolens = P. balsamifera, var. viminalis. 



Populus pyramidata = P. nigra, var. Italica. 



Populus rotundifolia = P. Sieboldi. 



Populus salicifolia = P. balsamifera, var. viminalis. 



Populus Sibirica pyramidalis = P. balsamifera, var. intermedia. 



Populus trepida = P. tremuloides. 



Populus Van Geertii P. monilifera. 



Populus viminalis = P. balsamifera, var. viminalis. 



Populus Wobsky = P. balsamifera, var. latifolia. 



COMPENDIUM. 



Landscape gardening is the embellishment of grounds in such 

 manner as to secure landscape or nature-like effects. The style 

 of planting, therefore, should be free and easy, devoid of all for- 

 malisms and unusual or forced effects. There should be broad 

 open spaces of greensward and heavy masses, or groups, of trees 

 and bushes ; and the heaviest plantings should be about the bor- 

 ders of the place. Scattered planting of individual trees and 

 bushes is fatal to good effects. Trees which are simply odd or 



