DESCRIPTIVE LIST OF FLOWERING SHBUBS. 415 



for covering naked buildings or trees, or for training into 

 fanciful shapes, or a stake so as to form a standard. 



In this country it is not very common, but it appears to 

 succeed well in shady situations. There are some speci- 

 mens in the city of Boston, which flourish finely upon the 

 rough granite or brick walls of buildings. It is easily 

 propagated by cuttings or layers. There are a number 

 of varieties of this, all of which are desirable. It grows 

 to a great height, and attaches itself firmly to whatever 

 it grows upon, without any assistance. 



HYPEBICUM. ST. JOHN'S-WORT. 



Some of the species of this genus have been noticed 

 under Herbaceous Plants. 



Hy peri cum prolificum, Shrubby St. John's-wort, is a 

 native woody species worth cultivating. It is found in 

 New Jersey and westward, grows from one to four feet 

 high, and from July to September is covered with a pro- 

 fusion of yellow flowers. 



HIBISCUS. ROSE OF SHARON. 



Hibiscus Syriacus. Tree Hibiscus, Rose of Sharon; 

 also called Althaea jrutex, Shrubby Althaea. The herba- 

 ceous species of Hibiscus have been mentioned in another 

 place ; this is an old and well-known shrubby species of 

 easy cultivation. A great number of varieties have been 

 produced, both single and double, and ranging in color 

 from white to dark-purple. The single varieties are gen- 

 erally more hardy than the double ones. Easily raised 

 from seeds and from cuttings. It requires very severe 

 pruning to keep it from growing loose and straggling. 



