96 THE LANDSCAPE GARDENING BOOK 



white flowers soon after the leaves in the spring ; small black 



fruits ; this is a fine tree. 

 3 Robinia pseudacacia: black or yellow locust; eighty feet high; 



has delicate airy foliage ; white flowers in pendant clusters, 



very fragrant and abundant ; blossoms in May and June. 

 4 Celtis occidentals: hackberry or nettle tree; eighty feet high 



or more ; its one aversion is swampy soil ; endures shade, so 



may be planted under or with other trees or in a dense group ; 



in appearance this is something like an elm to a casual 



observer. 



FOR LOW AND WET SOIL 



i Quercus bicolor (or Quercus platanoides) : swamp white oak; 

 seventy feet high, sometimes more; a fine and sturdy tree 

 with pale bark, shaggy as it ages; silvery-green foliage in 

 summer turning to yellow in the autumn; this tree likes a 

 fertile soil, in swamps or on borders of streams. 



2 Betula nigra (or B. rubra): red or river birch; eighty feet 

 high; bark reddish brown or gray, separating and rolling 

 back so that the lighter, warm, rosy tones of the inner 

 layers show; shaggy and picturesque; this will thrive even 

 on swampy land that is under water for lengthy intervals, 

 or on banks of streams or ponds. 



3 Fraxinus nigra: black ash; fifty to eighty feet high; very 

 slender trunk; bark dark gray, even, and closely furrowed; 

 foliage very dark green ; grows on the banks of streams and 

 lakes, and in deep swamps. 



4 Larix Americana: American larch, tamarack or hackmatack; 

 fifty to sixty feet high ; narrow and rather pyramidal when 

 young, but spreading somewhat, later; larch is a needle- 

 leaved, cone-bearing tree that is not evergreen; inhabits 



