Trees, Shrubs, and Woody Climbers 27 



flowers, useful for forcing early in the year; revolutum, and fruticans are 

 both evergreen species, the first-named having pinnate leaves, the other 

 ternate ones, both with yellow flowers during the summer months. Other 

 yellow-flowered species are floridum, from China, and humile, a shrubby 

 plant, from India. 



Juglans. The Common Walnut (J. regia), from western Asia, is the 

 best-known kind, and is referred to in more detail in Vol. Ill, p. 206, as a 

 fruit tree. Other valuable ornamental Walnuts are nigra, 60-100 ft. high, 

 North America; cinerea, very similar in appearance; cordiformis and Sie- 

 boldiana, from Japan; and mandschurica, from Amur. Raised from seeds. 



Kalmia. Ornamental evergreen shrubs from North America, of which 

 the best-known kinds are angustifolia, the Sheep Laurel, 2-3 ft. high, 

 with oblong leaves and corymbs of purple or crimson bell-shaped flowers. 

 There are a few varieties: glauca has grey-green leaves and lilac-purple 

 flowers in April; and latifolia, the Calico Bush, 3-10 ft. high, with broader 

 leaves and masses of rose to white flowers. All kinds flourish in peaty 

 soil and in loam with plenty of leaf mould, and are raised from seeds 

 and layers. 



Kerria (Corehorus) japonica, A pretty Japanese shrub, 3-5 ft. high, 

 with green stems, lance-shaped serrate leaves, and orange-yellow flowers. 

 There is a good double-flowered form (flore plena), a white-flowered one 

 (alba), and one with silver variegated leaves. Grows in any garden soil, 

 and increased by cuttings. 



Kcelreuteria paniculata. A handsome Chinese deciduous shrub, 10- 

 15 ft. high, with oddly pinnate leaves, that become yellow, bronze, and 

 purple in autumn. The yellow flowers are borne in panicles 2-3 ft. long in 

 summer. Increased by cuttings of half -ripened shoots under glass, and by 

 layering. 



Laburnum vulgare. The Common Laburnum is well known by its 

 grey-green leaflets and drooping racemes of bright yellow Pea-like flowers 

 in April and May. There are several varieties, including aureum, with 

 golden leaves; cristatum monstrosum, a curious crested -leaved variety; 

 Parksi and Watereri are both fine varieties with longer and deeper 

 coloured racemes, and quercifolium has the leaflets lobed like Oak leaves. 

 The purple Laburnum, Adami, is famous as a "graft hybrid" between 

 Cytisus purpureus and the ordinary kind; it has sometimes yellow, some- 

 times purple flowers, and sometimes mixed. The Scotch Laburnum, 

 alpinum, has large yellow flowers in June. All kinds grow in ordinary 

 soil. Choice varieties are grafted on stocks of the common form which 

 are easily raised from seeds. 



Laurus nobilis (SWEET BAY LAUREL). This well-known evergreen 

 with aromatic deep-green leathery leaves is grown largely in tubs, &c., on 

 the Continent and cut into various shapes, principally mop-head standards 

 and pyramids, which are largely used for hotel and street decoration. It is 

 somewhat tender in places, and thrives in a rich sandy loam, and is 

 increased by cuttings, layers, and grafting. L. Sassafras, the North 



