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Mountain Ash but no better for gardens in this country than that tree 
which is gradually becoming naturalized in this country. In the Arbor- 
etum, at least, the handsomest trees have sprung from seeds scattered 
by birds. One of the handsomest and certainly the most interesting 
Mountain Ash in the Arboretum is growing in the nursery near the top 
of Peter’s Hill. It is a fast-growing tree of perfect shape, with a 
straight stem covered with smooth pale bark, leaves with unusually 
narrow leaflets, and wide, convex, compact clusters of pink fruit. No 
other Mountain Ash which is now known has fruit of this color. This 
tree which was grown in the Arboretum from seed was first thought to 
be a form of S. pekinensis; it is now believed to be a hybrid of S. Aucu- 
paria and S. pekinensis to which the name of S. Arnoldiana has been 
given. In the convex, crowded clusters of flowers and fruits it shows 
the influence of the European plant; in the narrow leaflets and in the 
size of the small fruit it resembles S. pekinensis, while in color the 
fruit is intermediate between those of its supposed parents. 
Autumn Colors. There is not yet any great show of brilliant colors 
in the Arboretum and the leaves of many trees, especially the Oaks, 
are as green as they were at midsummer, but as in northern New 
England the leaves of the Sugar Maples, the Birches and other north- 
ern trees are reported to be more brilliant than usual a good coloring 
of many trees may be expected before the end of the month. A 
few spots of bright color, however, are to be seen here, and these are 
mostly made by Asiatic trees and shrubs. Already the bright clear yellow 
leaves of the Siberian Cork-tree {Phellodendron amurense) have dis- 
appeared from this small tree which is most interesting in the thick, 
pale, deeply furrowed bark which covers the trunk and larger branches. 
Last week Acer mandshuricum, a Box Elder of northeastern Asia, with 
clear pure pink fading leaves was from the rarity of this autumn color 
the most interesting object in the Arboretum. This Maple is one of the 
largest and handsomest trees in Manchuria, but although other trees of 
the same region flourish here it has not yet found a place in the Ar- 
boretum which suits it, and as yet gives little promise of large size or 
old age. This is to be regretted for it is as beautiful in the spring as 
in the autumn, as the unfolding leaves are deep red. The leaves of a 
Japanese Burning Bush, Evonymus alatus, are just turning to the deep 
rose color which is unlike that of any other plant in the Arboretum at 
this season of the year and which makes it one of the most desirable 
of the perfectly hardy shrubs which can be used for the decoration cf 
New England gardens. Very beautiful this autumn is a Chinese Sumach, 
Rhus javanica, which rivals our native species in the scarlet color of 
its leaves. This Sumach is a small round-headed tree which produces 
its large terminal clusters of white flowers at the end of July or in 
early August. The showy summer flowers and the brilliant October 
foliage should make this tree better known. In October the leaves of 
no North American tree are more brilliant than those of Acer ginnala, 
a Maple of eastern Siberia with deeply divided leaves and compact clus- 
ters of fragrant flowers. Unfortunately the leaves of this handsome 
tree fall soon after changing color. 
