130 MISSOURI BOTANICAL GARDEN BULLETIN 



Botanical name Common name Habitat 



Ailanthus glandulosa Tree of heaven Asia 



Fraxinus excelsior European ash Europe, Orient 



Fraxinus Ornus Ash Europe, Asia 



Ginkgo biloba Maidenhair tree China 



Magnolia Kobus Magnolia Japan 



Phellodcndron amurense Chinese cork tree China, Japan 



Platanus orientalis Oriental sycamore Europe, India 



Platanus orientalis var. 



acerifolia Maple-leaved sycamore. . . . Gardens 



Populus alba White poplar Europe, Asia 



Populus alba var. Bolleana. . .Bolle's poplar Turkestan 



Populus nigra var. italica. . . . Lombard y poplar Asia 



Quercus Cerris Turkey oak Europe, Asia 



Quercus pedunculata English oak Europe, Africa 



Ulmus montana Scotch elm Europe, Japan 



All the trees mentioned above will endure ordinary city 

 conditions except Acer and Quercus. The Ailanthus will 

 do well under the most unfavorable city conditions and is de- 

 sirable only for such cases. 



XV. TREES AND SHRUBS FOR UNFAVORABLE AND SMOKY 

 CITY CONDITIONS 



Botanical name Common name Habitat 



TREES SUITABLE FOR A VERY SMOKY ATMOSPHERE* 



Broussonetia papyrifera Paper mulberry China, Japan 



Koelreuteria paniculata Varnish tree China, Japan 



Magnolia Yulan Magnolia China, Japan 



Morus alba White mulberry Asia 



TREES SUITABLE FOR LESS SMOKY CONDITIONS 



Acer campestre English cork maple Europe, Asia 



Aesculus Hippocastanum and 



varieties European horse-chestnut. .Europe 



Aralia chinensis Chinese angelica tree. . . . China, Japan 



Cercidiphylltim japonicum. . .Cercidiphyllum Japan 



Crataegus Oxyacantha English hawthorn Europe, Africa 



Evonymus species Europe, Japan 



Salix babylonica and varietiesWeeping willow Caucasus 



Salix Caprea Pussy willow Europe, Asia 



Ulmus campestris English elm Europe 



Zelkova acuminata Zelkova Japan 



•Those mentioned for "Street and Avenue Planting" are also 

 suitable for smoky city conditions. • 



