342 



HORTICULTUKAL MANUAL. 



thick, corky bark and elegant pinnate foliage three or four 

 feet long gives variety io a tree group. 



The horse-cliestnut family is exceedingly varied, and 



FIG. 93. Yellow- wood (Cladastris tinctoria). 



some of its members are hardy over nearly the whole Union. 

 In the East and Southwest the ^Esculiis hippocastanum, 

 or white-flowered horse-chestnut, is extensively planted for 

 street, avenue, and park trees. The double-flowered vari- 



