of the first Arboretum Nursery in which this Lilac was planted. The 
United States and Europe owe to Colonel Clark the introduction of some 
other good plants. Among the seeds sent by him to the Arboretum were 
those of Cercidiphyllum (see Bulletin No. 1), the climbing Hydrangea 
(. Hydrangea petiolaris), Phellodendron sachalinense, and the northern 
broad-leaved form of Evonymus radicans, the variety vegetus. 
It is too soon to speak of two species of Phellodendron found by Mr. 
Wilson in China, but of the three species established in the Arbor- 
etum Phellodendron sachalinense is the handsomest. All the species are 
natives of eastern Asia, and are small trees with pinnate leaves, small 
clusters of inconspicuous yellow flowers, the male and female flowers be- 
ing produced on different individuals, and black, berry-like fruits; they 
have bright yellow wood and roots, and all parts of these trees are per- 
meated with a fragrant aromatic oil which apparently makes them im- 
mune from the attacks of insects. Phellodendron sachalinense, which is 
a native of Saghalin and the northern island of Japan, has grown in the 
Arboretum into a tree about thirty feet high, with a tall, straight trunk, 
and wide-spreading branches forming a shapely flat-topped head. The 
seedlings springing up naturally near the old trees indicate that it is 
likely to hold its own in New England. The hardiness of this tree, its 
rapid growth, and the fact that it is not injured by insects, suggest that 
this is a good subject to plant in narrow streets. Seeds will be sent from 
the Arboretum in the autumn to anyone who may desire to grow this tree. 
A specimen of the male tree now in flower can be seen on the left-hand 
side of the Meadow Road, and in the group of these trees on the right- 
hand side of the road there is a female tree with the fruit just forming. 
In this group male trees of the type of this genus, Phellodendron amur- 
ense , from eastern Siberia are in bloom. These show already the thick f 
pale, cork-like bark to which this genus owes its name. 
Just beyond the Phellodendron Group the Evonymus Group can be 
found. In this group several plants of the Evonymus introduced by 
Colonel Clark, Evonymus radicans vegetus, naturally a vine, are grown 
as low broad bushes. This is the hardiest of the many forms of this 
evergreen Evonymus. The leaves are broader and handsomer than those 
of the other forms, and the fruit is produced on young plants in great 
abundance. The plants, which are now in flower, can be compared in 
this group with the forms of this plant which are more usually cultivated 
in this country. Some of the deciduous-leaved species of Evonymus are 
also in flower here, and although they are more conspicuous in the autumn 
when the leaves often turn to bright colors and the brilliant fruits cover 
the branches, they are always interesting, and worth examination this 
week. 
Opposite the Evonymus Group the Smoke-tree (Cotinus) of old-fash- 
ioned gardens is in bloom. The flowers are not conspicuous, and it is 
the clusters of the lengthening hairy colored stems of the flowers which 
make the “smoke” and the conspicuous feature of this plant which is a 
native of southern and southeastern Europe, the Himalayas and western 
China. Near it is a large plant of the American Cotinus which is also in 
flower. The clusters of hairy flower-stems are less conspicuous than those 
of its Old World relative, but the foliage is larger, lighter-colored, and 
in autumn turns brilliantly to orange and scarlet shades. This plant 
serves as an illustration of the fact that it is impossible to predict the 
hardiness of any plant from the character of the climate where it grows 
naturally. The American Smoke-tree, a native of the south where it 
