58 
Acer ginnala is another small tree or large shrub of the Amoor 
region. It bears compact clusters of small, nearly white, fragrant 
flowers and pointed lobed leaves which in October are even more bril- 
liantly scarlet than those of the best of our native Red Maples. This 
beauty is also short-lived and is already passing, Acer ginnala is one 
of the early introductions of the Arboretum into the United States, 
and it is fortunate that its decorative value has been recognized by 
American landscape gardeners and nurserymen, and that it is no longer 
rare in American plantations. 
Acer mandshuricum. This tree is still little known in the United 
States and Europe. It is one of the trees with leaves composed of 
three leaflets, and it is one of the largest and handsomest trees of 
the mountain valleys of Manchuria and Korea. It has slender bright 
red branchlets, and the narrow leaflets are three or four inches long, 
gradually pointed at the ends, and are borne on long, slender scarlet 
stalks. The pale color of their lower surface is retained after the 
upper surface has turned bright red early in October, and the contrast 
of the colors of the two surfaces greatly increase the October beauty 
of this tree. This Maple flowered in the Arboretum for the first tim.e 
this year and produced a good crop of fruit, which, however, unfortu- 
nately proved to be abortive. If this tree is ever taken up by nur- 
serymen there is every reason to believe that it will become one of 
the most ornamental trees of recent introduction. 
Evonymus alatus. To those persons who complain that the Arbor- 
etum is not interesting because most of its plants are not known to 
them or are beyond their immediate reach this Japanese Burning Bush 
should bring hope and encouragement ai well as much joy, for its 
autumn beauty has long been known and it is now to be found in most 
American nurseries. The flowers and fruits are small and inconspicu- 
ous, and the only real value of this shrub is found in the deep rose 
color passing to scarlet of its October leaves which are already begin- 
ning to fall. That its whole beauty may be seen this shrub should be 
planted as a single specimen with plenty of space for the free devel- 
opment of its spreading branches, which when it has been well planted 
will cover a diameter of ten or twelve feet on the ground and form a 
compact, round-topped bush six or eight feet high. The corky wings 
on the branchlets to which this plant owes its specific name and which 
vary in different individuals are interesting. There is a large plant 
in the Evonymus Collection on the right-hand side of the Meadow Road 
and there is another on the left-hand side of the Bussey Hill Road 
above the Lilac Collection. 
Eastern American Mountain Ashes. As fruit trees the two Mountain 
Ashes of eastern North America, Sorbus americana, and its variety 
decora have been perhaps the handsomest objects in the Arboretum 
this autumn. The fruit is already almost entirely eaten by birds, for 
which every year it furnishes here abundant harvests; but attention is 
now called to these small trees in the hope that they may become as 
well known in the gardens of southern New England as they are in 
those of eastern Canada, northern Michigan, Wisconsih and Minnesota. 
