Gardenia — Hypericum 361 



tropical range, of which, besides several small plants, at least one shrub 

 has become a popular ornament. 



H. Syriacus Linn. (171) (Althea frutex), Rose of Sharon, from Asia, 

 but quite hardy into southern Ontario, is a shrub (ten to twelve feet), 

 sometimes in tree form, with a rather stiff, straggling habit unless prop- 

 erly pruned; with large, hollyhock -like flowers (August, September), 

 which, in varieties, vary from white {alba) to pink (cwnilea), and red 

 (boiile de fen), double and single. It lends itself to informal hedge use, 

 standing shears well, and then flowering freely, also useful as accents 

 and in small gardens, and is very adaptive as regards soil. 



Hazelnut, see Corylus. 



Hercules Club, see Aralia. 



Holly, see Trees [List C]. 



Hombeam, see Trees, List C (under Carpinus). 



Hop Hornbeam, see Trees, List C (under Ostrya). 



Hypericum. St. John's Wort. A very large genus (two hundred 

 species) of composite, herbaceous plants, shrubs, and trees, from 

 Europe, Asia, and America, not all hardy. Several small to very 

 small shrubs are attractive because of their small, or at least narrow, 

 foliage. The large, showy, yellow flowers, appearing late in summer 

 or fall, are persisting, which is their special recommendation. They 

 are useful in small gardens and lawns for edging, and as a substitute 

 for turf. Although they are capable of thriving in poor soils and in 

 partial shade, they are short-lived. 



* H. Kalmianum Linn. (172), the native St. John's Wort, from the 

 Great Lake region, is a low (two to four feet), spreading bush, with 

 dense foliage, of linear, long (two inches), bluish-green leaves, and 

 glossy, yellow, dandelion-like flowers in clusters, appearing in August 

 and continuing long. It is shade-enduring, and perhaps the hardiest 

 and best, very distinct and attractive. 



H. aureum Bart. (173), is a lower (two to three feet), not so hardy, 

 shrub, of southern range, with larger (two inches), showier flowers 

 than the preceding, and as late and persistent. 



*H. Moserianum Andre (174), Gold Flower, is still lower, almost 

 diminutive, semi-hardy into New England, with immense (two to two 

 and a half inches), rich golden flowers, with crimson stamens, blooming 

 all the season; it is perhaps the most graceful, with long, slender stems, 

 drooping at the tips and densely foliaged. It is splendid for rockeries, 

 like the others. 



