SHERARDIA. 



267 



SHRUBBERY. 



ravia has been incorporated in that of 

 Senecio. See Cineraria. 



Sensitive Plant. — See Mimosa. 



Shaddock. — See Citrus. 



Shading is necessary to plants after 

 transplanting, to prevent the evapora- 

 tion from the leaves, which takes 

 place when the plants are exposed to 

 the full heat of the sun, being greater 

 than the roots can supply moisture to 

 support. Besides this, partial shade 

 is necessary to many plants which 

 cannot bear the direct rays of the sun; 

 such, for example, as the Californian 

 annuals — plants which in their native 

 state grow in thick woods, fens, &c. 

 In these cases, however, it is not 

 necessary that the shade should be so 

 great as for newly-transplanted plants. 

 There is a great deal of difference in 

 plants, with regard to their flowers 

 bearing the direct rays of the sun. 

 Some require solar influence to make 

 them expand, such as all the kinds of 

 Mesembryanthemum ; while others, 

 such as the Evening Primrose, only 

 unfold their flowers when the sun 

 withdraws its rays. Most of the orchi- 

 deous epiphytes, which grow in dense 

 woods, succeed best in hot-houses 

 glased with green glass, which affords 

 them the requisite degree of shade. 



Sharp Cedar. — Acacia Oocyce- 

 drus. — See Acacia. 



Sheep Laurel. — See Kalmia. 



Sheep's Scabious. — See Jasione. 



Shepherdia. — Elceagnece. — Beau- 

 tiful shrubs, or low trees, with silvery 

 leaves, which were formerly considered 

 to belong to the genus Hippophea. 

 The silvery appearance of the leaves 

 is produced by their outer surface 

 being of a bluish green, and their 

 lower surface lined with a soft silky 

 down of snowy whiteness. The plants 

 are natives of North America, and 

 may be grown in peat, or in very 

 sandy loam. 



Sherardia. — Rubiacece. — Field 

 Madder. Very pretty British weeds, 



which may be introduced with good 

 effect on rockwork. 



Shifting is the operation of trans- 

 ferring plants grown in small pots to 

 other pots a little larger : and it is 

 of very great advantage when it is 

 wished to keep plants short and 

 bushy. In shifting, the ball of earth 

 round the roots is not broken, but 

 placed in the centre of the new pot, 

 and the earth filled in round it. — See 

 Potting. 



Shingle Oak. — Quercus imbri~ 

 cata. 



Shrubby Trefoil. — Ptelea triefo- 

 liata. — See Pte v lea. 



Shrubby Cinquefoil. — PotentUla 

 fruticosa. — See Pote'ntilla. 



Shrubbery. — A walk bordered by 

 shrubs and trees with some flowers in 

 front, is called a shrubbery. In small 

 villas it generally leads from the 

 house to the kitchen garden; and 

 sometimes goes round the latter, or 

 is conducted round an open lawn. 

 The object in forming a shrubbery is 

 to produce as great an extent of in- 

 teresting walk as the nature, extent, 

 and other circumstances of the place 

 will admit. There is then no posi- 

 tive rule for either the length of 

 shrubbery walk or its direction ; and 

 unless a given situation were to be 

 treated of, only some general direc- 

 tions can be given, or principles laid 

 down respecting the planting of the 

 shrubs and trees. 



If we examine most of the shrub- 

 beries in country residences, we shall 

 find that there is a general sameness 

 in the appearance of the trees and 

 shrubs with which they are planted, 

 from one end of the shrubbery to the 

 other. This sameness results from 

 the mode commonly employed of 

 mixing those kinds of trees and 

 shrubs that can be most readily pro- 

 cured indiscriminately together. Some 

 evergreens are distributed throughout 

 the whole, such as a few Hollies, and 



