TREATMENT OF SLOPING GROUNDS. 29 



tree, weeping larch, pyramidal oak, Lombardy poplar, 

 RJius aromatica and Rhus glabra laciniata or cut-leaved 

 sumach, the ginkgo tree ( 'Salisburia adiantifolia), Salix 

 rosmarinifolia (rosemary-leaved willow), and tlie Japan 

 weeping ( Sophora) . Some of the shrubs 

 suitable for rocky regions are the Ghent 

 or hardy azalea, Cletlira alnifolia, Cornus 

 sanguined alba (the red-twigged dogwood), 

 Daphne Genkiva, Deutzia gracilis, Elceagnus 

 hortensis, Elceagnus longipes, Euonymus 

 alatus, Forsyihia suspensa, Fothergilla al- 

 nifolia, Genista scoparia (Scotch broom), 

 Genista tinctoria, Itea Virginica, Kerria 

 Japonica, Jiasminum nudiflorum, Lonicera 

 fragrantissima, Lycium barbarum, Myrica 



cerifera, Prinos verticillata, Prunus mari- 



tima, Rhodotypus kerrioi- 



des, Rubus odoratus, Sam- 



bucus nigra aurea, Spiraea 



Reevesiana, 8. callosa, S. 



callosa alba, S. opulifolia, 



Symphoricarpus vulgaris, 



S. racemosa, Tamarix Afri- 



cana, T. Indica, Viburnum 



opulus, Yucca filarnentosa, 



and I 7 ] recurva. 



The best evergreens for rockwork are the weeping 

 hemlock, the weeping Norway spruce or Picea excelsa 

 inverta, Picea excelsa elata, Cedrus Atlantica, Juniperus 

 Virginiana (the red cedar), J. prostrata, J. squamata, J. 



YUCCA RECURVA. 



