136 TREES AND SHRUBS 



a remarkable picture of intense colouring ; plant 

 them in large groups S. daphnoides (the White- 

 stemmed Willow), S. fragilis (Crack Willow), 5. /. 

 basfordiana (Red-barked Willow), and S. hippophaifolia 

 (Sea Buckthorn-leaved Willow). 



Populus alba (White Poplar), P. deltoidea (Canadian 

 Poplar), P. nigra (Black Poplar), Lombardy Poplar, 

 and P. tremula (the Aspen). But the Poplars must 

 not be overdone, and by pond or lakeside are 

 often out of place. In such places the Cardinal and 

 Yellow-barked Willow, Sea Buckthorn, and similar 

 shrubs are more appropriate. 



Common Alder, with its many varieties Cut- 

 leaved, the Golden-leaved, and such as Alnus incana 

 and A. serrulata. 



Taxodium distichum (Deciduous Cypress) ; tender 

 green in spring and brownish red in autumn, when 

 the leaves change colour. 



Hippophae rhamnoides (the Sea Buckthorn). 



TREES AND SHRUBS FOR MOIST (BUT NOT 

 SWAMPY) SOIL 



Berberis Darwinii (Darwin's Barberry), B. Thun- 

 bergi (for its beautiful autumn leaf-colouring), Birch, 

 Dogwoods, Cornus alba and varieties ; the variety 

 sibirica has brilliant-red stems. Cotoneaster buxifolia, 

 C. frigida, C. Nummularia, C. Simonsii; Ash, Myrica 

 Gale (Sweet Gale) and M. asplenifolia ; Ledum palustre, 

 Nyssa sylvatica (Tupelo tree), Mountain Ash, Quercus 

 aquatica (Water Oak), Q. palustris (Swamp Oak) ; 



