20 LANDSCAPE GARDEN SERIES 



IX. PLANTS FOR CONGESTED CITY DISTRICTS 

 WHERE THERE IS CONSIDERABLE ATMOS- 

 PHERIC IMPURITY 

 Trees 



*Acer Negundo, Box Elder. 



*Ailanthus glandulosa, Tree of Heaven. 



*Crataegus (mollis or coccinea type), Thorn. 



*Platanus orientalis, Oriental Plane. 



*Morus tatarica, Russian Mulberry. 



*Populus carolinensis, Carolina Poplar. 



*Populus alba, White Poplar. 



*Robinia pseudacacia, Black Locust. 



*Salix, in variety, Willow. 

 Shrubs 



*Aralia pentaphylla, Five-leaved Aralia. 

 Artemisia abrotanum, Old Man. 



*Berberis Thunbergii, Japanese Barberry. 



*Colutea arborescens, Bladder Senna. 



*Forsythia, (except viridissima), Coldcn Bell. 



*Lycium chinense, Matrimony Vine. 



*Rhamnus in variety, Buckthorn. 



*Spiraea in variety. 



*Symphoricarpos in variety. 



*Syringa vulgaris, Lilac. 



X. LOW OR TRAILING PLANTS FOR COVERING 



SLOPES AND PREVENTING SOIL EROSION 

 Deciduous 



*Ampelopsis quinquefolia, Virginia Creeper. 

 *Celastrus scandens, Bittersweet. 



Comptonia asplenifolia, Sweet Fern. 

 *Diervilla trifida, Low Bush Honeysuckle. 

 *Forsythia suspensa, Drooping Golden Bell. 



Lonicera Heckrottii, Low Honeysuckle. 

 *Lonicera sempervirens, Coral Trumpet Honeysuckle. 

 *Lycium chinense, Matrimony Vine. 



Myrica cerifera, Bayberry. 

 *Rhus aromatica, Fragrant Sumach. 

 *Rosa setigera, Prairie Rose. 



