38 
mier are handsome and apparently hardy plants with flowers tinged 
with red. 
Deutzia scabra, a native of Japan and China, is one of the hardiest 
and most generally cultivated of all Deutzias. It is a tall shrub with 
reddish branches, rough leaves and erect clusters of white flowers 
sometimes flushed with rose. This is the Deutzia of old gardens north 
and south. The variety crenata has brown branches and smoother 
leaves, and although less common in gardens appears to be equally 
hardy. The variety Watereri has flowers tinged with red on the outer 
surface of the petals. There is a variety plena with double flowers 
with petals tinged with rose color. The variety “Pride of Rochester” 
has flowers tinged with rose and is one of the handsomest of the group. 
Deutzia grandiflora is the first of the genus to flower here. Although 
known known to botanists since 1832 it has only recently found its way 
into gardens through the agency of the Arboretum. 
Philadelphus. Gardens owe much to this genus. In those of New 
England of more than a century ago it was one of the chief ornaments, 
and a few old-fashioned Roses, with the Syringa or Mock Orange {Phil- 
adelphus coronai'ius) were loved and carefully tended; in modern gar- 
dens there are few' shrubs which produce more beautiful flowers than 
some of the Syringas. There are now established in the Arboretum 
some thirty species of Philadelphus and a large number of varieties 
and hybrids. All these plants, popularly called Syringas, are easy to 
propagate, demand no special care and suffer less from the attacks of 
insects than most trees and shrubs. They bloom freely every year, 
their flowers are often very fragrant, and in rich, well-drained soil the 
plants live for a long time. Some of the species can grow under the 
shade of overhanging trees, and flower in such situations more freely 
than almost any other shrub. The beauty of all these plants is found 
in their white flowers; the fruit, which is a dried capsule, has as little 
beauty as that of the Lilac, and there is nothing particularly distinct 
or interesting in the habit of the plants of any of the species; the 
leaves fall in the autumn without coloring. As flowering shrubs, how- 
ever, not many surpass them in beauty, and their beauty is increased 
by the length of their flowering season which lasts in the Arboretum 
six weeks. The first Philadelphus to bloom here opened its flowers 
several week ago. It is a native of Korea and is named P. Schrenkii 
var. Jackii as it was discovered by Professor Jack during his travels 
in Korea. It is a tall narrow shrub with erect stems and flowers of 
medium size, and is of no exceptional value as an ornamental plant. 
Almost as early to flower is P. hirsutus from the southern Appalachian 
Mountain region of North America. This is one of the smallest flow- 
ered species, and in the Arboretum is a large loose-growing shrub of 
unattractive habit and of comparatively little value as a garden plant. 
It is to be regretted that the Syringa of old gardens (P. coronarius) has 
been pushed aside by newer introductions and has become compara- 
tively rare in the gardens of this part of the country, for the flowers 
of no other Syringa have a more delicate and delightful fragrance. 
This plant, which is a native of southeastern Europe, reached England 
before the end of the sixteenth century, and was probably one of the 
