FLOWERING- TREES AND SHRUBS 61 



produced in the greatest freedom. It doeB well in warm, 

 sheltered sites, but is most frequently seen as a greenhouse 

 plant. A native of Japan. 



D. kalmsifloba. — This is a hybrid form between D. 

 parviflora and D. discolor purpurascens, and is a valuable 

 flowering shrub and perfectly hardy. The flowers are 

 rose-coloured with a deeper margin tint, and produced in 

 large corymbs. 

 X D. Lbmoinei has axillary racemes of very large white 

 flowers. It is highly decorative, and is a hybrid between 

 D. gracilis and D. parviflora. 



D. stamine.e. — Himalayas, 1841. This has white, 

 sweet-scented flowers and oblong leaves, covered with a 

 grey tomentum on the undersides. 



The most suitable soil in which to cultivate the various 

 Deutzias is rich, sandy loam, well drained. 



Diervilla (Caprifoliaceae). 



Diervilla flobibunda (syn D. multiflora and Weigelia 

 floribunda), from Japan, 1864, has narrow, tubular, 

 purplish-coloured corollas, that are only slightly opened 

 out at the mouth. The Diervillas are valuable decorative 

 shrubs of free growth in good, rich loam, and bearing a 

 great abundance of the showiest of flowers. For shrubbery 

 planting they must ever rank high, the beautiful flowers 

 and rich-green, ample leafage rendering them distinct and 

 attractive. 



D. gbandifloea (syn D. amabilis, D. arborea, and Weigelia 

 amabilis). — Japan. This is of larger growth than D. rosea, 

 with strongly reticulated leaves, that are prominently 

 veined on the underside, and much larger white flowers. 

 It is a distinct and worthy species. There are some beau- 

 tiful varieties of this species, named Isolinse, Van Houttei, 

 and Striata. 



D. hoetensis (garden), from Japan, grows about 5 feet 



