366 



THE BOOK OF GARDENING. 



plants that have withstood several degrees below zero without 

 showing any signs of injury. What they do object to, and 

 this should be remembered at planting-time, are north and 

 east winds ; this difficulty can be overcome by selecting a 

 position sheltered from cold winds. All the Japanese Maples 

 mentioned below make splendid pot subjects for conservatory 

 and room decoration, as well as pleasing lawn trees. They 

 thrive in ordinary soil, provided it is well drained. A. pal- 

 jiiatum (A. polymorphum) is a well-known kind, having deep green 

 leaves, shaded with yellow and rose in autumn. A. p. aiireiim 

 is strikingly handsome, with rich yellow foliage. A. p. roseo- 

 has deeply divided leaves, pale green, edged with 

 A. p. saiigiiiiieum has leaves a trifle larger than the 

 type, and of a rich crimson hue. The leaves of A. p. atro- 

 purpureum are of a beautiful bronzy - purple shade; it is a 

 vigorous grower. A. p. dissectum (A. p. palmatifidiini) is a dis- 



marginatum 

 rose-pink. 



tinct and beautiful form, with 

 sub-variety, ornatiim^ also has 



green fern-like leaves 

 fern-like leaves 



light 



Its 



but of a rich 

 shade of 

 bronze - purple. 

 A. p. septem- 

 lo bum has 

 beautiful foli- 

 age of a tender 

 shade of green. 

 A. p. s. e/egans 

 is very orna- 

 mental; the 

 beautifully- 

 lobed leaves 

 undergo 

 various changes 

 of colour, from 

 pale green, 

 through pink 

 and crimson, 

 to dull red. 

 A. p. s. lacijii- 

 atum is dis- 

 tinct, elegant, 

 and of 



growth 



Fig. 238. — ^^^scuLUs Pavia. 



good 

 Its 



soft green 

 leaves are 

 touched with 

 rose. 



^scuLUS. — The value of ^-E. Hippocastanuni (Horse Chestnut) 

 for park decoration is well known, and as an avenue tree it 



