36 
for more than a hundred years. Plants covered with flowers and 
flower-buds can be seen with the other Chinese Roses in the Chinese 
Shrub Collection on the southern slope of Bussey Hill. 
Syringa Sweginzowii. This year this has been the last of the true 
Chinese Lilacs to flower. The leaves are dark dull green and sharply 
pointed, and the flowers are borne in long narrow clusters with dark 
red slender stems and branches; they are delicately fragrant, half 
an inch long, with very slender corolla-tubes, and are flesh color 
in the bud, becoming nearly white after the buds open. Like the 
other Chinese species, it is perfectly hardy, grows rapidly, flowers 
freely even as a small plant, and is well worth a place in a collec- 
tion of Lilacs. 
The Tree Lilacs. No plants are now more conspicuous in the Arbor- 
etum than the Tree Lilacs. There are three species of this group, S. 
amurensis, S. pekinensis, and S. japonica. The first is a native of 
eastern Siberia and is a small tree with flat, spreading or slightly 
drooping clusters of white flowers. <S. pekinensis, a native of north- 
ern China, is a shrub rather than a tree, although it sometimes reaches 
the height of thirty feet, with numerous stout stems pendant at the 
ends and covered with bark peeling off in thin layers like that of some 
of the Birch trees. The flower-clusters are flat, unsymmetrical, half 
drooping, and are smaller than those of the other species. S. japonica 
is a native of the forests of northern Japan, and i3 the last of the 
three species to flower; it is a tree often thirty or forty feet high with 
a tall stout trunk covered with lustrous bark like that of a Cherry 
tree, and a wide, round-topped head. Like the other species of the 
group, it loses its leaves in the autumn without change of color. 
These three plants can be seen on the bank in the rear of the Lilac 
Group on the left-hand side of the Bussey Hill Road. 
Halimodendron argenteum. This shrub, a native of Siberia, is now 
covered with pale rose-colored, pea-shaped, fragrant flowers, which are 
borne in short clusters, and their delicate beauty is heightened by the 
light color of the leaves which are clothed with a pale silky down. The 
plant remains in flower during several weeks, and is ore of the hand- 
somest of the early-summer flowering shrubs in the Shrub Collection. 
Evodia Henryi. This tree from western China is flowering here for 
the first time. It belongs to a genus related to Phellodendron, and is 
widely spread over eastern Asia, extending to Australia and Madagas- 
car. Like Phellodendron, it has pinnate leaves, and small, unisexual 
flowers in small clusters terminating the shoots of the year, and, like 
Phellodendron, Evodia is aromatically scented in all its parts. It differs 
from that genus, however, in the fruit which is a dry capsule and not 
a berry, and in its exposed axillary buds, those of Phellodendron being 
covered by the bases of the leaf stalks. Evodia Henryi is a small tree 
with dark green, lustrous leaves and small pink flowers, and is an in- 
teresting addition to the list of trees which can be successfully culti- 
vated in this climate. 
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