ON TREES AND SHRUBS. 



367 



is second to none. It is not over-partial to wet soils, a rather 

 rich loam, moderately dry, suiting it admirably. At. H. flore- 

 pleno is a fine variety with double flowers ; its spikes of flowers 

 are large. and massive, and remain in condition for a long time. 

 It is later in coming into blossom than the type. A. carnea 

 (A. rubicundd) is a North American species, and grows about 

 20ft. high. It is valuable in gardens where the first-named 

 species would be too big. Its bright scarlet flowers are produced 

 on stout spikes, and stand well above the deep green foliage. 

 JE. c. Brioti makes a medium-sized, well-balanced tree, with deep 

 rose-coloured flowers. It is very floriferous, and one of the 

 finest of the family. A. indica (Indian Horse Chestnut), a 

 native of the Western Himalayas, is a lofty, much-branched tree, 

 and bears abundantly thyrsoid panicles of white flowers blotched 

 with yellow and red at the base. A. flava (Pavia bicolor) is a 

 yellow-flowered kind, distinct and ornamental. A. parviflora 

 {Pavia macrostachyd) is a handsome small-growing tree, suitable 

 for small gardens ; it is also useful 

 for planting as an isolated speci- 

 men on the lawn. Its long 

 racemes of white flowers are very 

 beautiful, and borne with much 

 freedom. A. Pavia {Pavia rubra, 

 Fig. 238) is of dwarf habit and 

 slender growth, and carries slender 

 panicles of bright red flowers. 

 A. californica {Pavia californica) 

 is somewhat scarce in gardens, but 

 very handsome. It is rarely seen 

 more than 15ft. in height, and is 

 very pretty about midsummer when 

 laden with its pale rose-coloured 

 flowers. 



?>, J0B: 



Ailantus glandulosa (Tree of 

 Heaven) is of rapid growth, and 

 its divided leaves are deep green, 

 and often 5ft. long. It succeeds 

 well in dry soils, and as it grows 

 to a height of 60ft., it is more 

 adapted for the park than for the 

 garden. It may also be used with 

 good effect in sub-tropical garden- 

 ing if treated as recommended for 

 Paulownia imperialis. 



IM'iM 





Fig. 239. — Alnus glutinosa. 



Alders (Alnus) are. specially suit- 

 able for damp soils, and when planted near water produce a telling 

 effect in spring, when their elegant pendulous catkins (Fig. 239) 



