324 



Ornamental Shrubs. 



and very numerous, the well-rounded head shows to the 

 best advantage. The plant is a native of this country. 

 It grows to a height of some twenty feet. 



H. diptera is also of American origin, but grows only 

 ten feet high. It has even larger blossoms and leaves 

 than the tetraptcra, and many prefer it for garden plant- 

 ing as it is known to be equally hardy. H. hispida is a 

 native of Japan, and has flowers in more corymbose ra- 

 cemes than has either of the preceding. The fruit is 

 covered with stiff hairs. It is not yet much grown in this 

 country, and has no especial merits over our own halesias. 

 None of the halesias can be depended upon to withstand 

 the winters of the extreme North unless well protected. 



