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 (a/ba) to pink (cwrulea), and red 
(boule de feu), 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]. 
Hornbeam, see Trees, List C (under Carpinus). 
Hop Hornbeam, see Trees, List C (under Ostrya). 
Hypericum. Sz. 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. 
* AH. Kalmianum Linn. (172), the native Sit. 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. 
* FT. Moserianum André (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. 
