WAHLENBERGIA. [Campanulaceae.] Hardy or half- 

 hardy perennials and annuals. The latter should be 

 sown in heat in March, and potted or planted out to flower ; 

 the former increase by division or seeds. Soil, sandy loam. 



Wall-Cress. See Arabis. 



Wallflower. See Cheiranthus. 



Walnut. See Juglans. 



Water-Lily. See Nymph^ea. 



Water-Plantain. See Alisma. 



Water-Reed. See Arundo. 



Weigela. [Caprifoliaceae.] Very handsome hardy de- 

 ciduous shrubs. They are free-growing, striking readily from 

 cuttings or from layers, and grow vigorously in good garden 

 soil. The blossoms, at first white, but changing to rose- 

 pink, are produced, generally in great profusion, in spring. 



W. ainabilis (lovely) ; hardy shrub ; 3 feet ; flowers pink, in 

 May; Japan; 1852. W. rosea (rosy); hardy shrub; 3 feet; 

 flowers pink, in May ; China ; 1844. W. Middeiidorffi.a7ia ; 

 hardy shrub ; flowers white, shading to pale-yellow, spotted with 

 carmine ; south of Russia ; 1856. 



There are other species, and a variety with variegated fo- 

 liage. These plants are now called Diervilla. 



Washingtonia.^ [Coniferae.] A magnificent hardy ever- 

 green tree. Soil, loam. Increased by seeds. This tree 

 will survive as far north as Massachusetts. 



W. gigantea (gigantic) ; hardy evergreen tree ; 200 feet ; flow- 

 ers deep purple, in July ; California ; 1844. 



^ Properly called Sequoia, which has precedence of both Washingtonia and Wel- 

 Uogtonia. 



377 



