52 
a genus of the Rose Family which had not before been cultivated in 
the Arboretum. There are now other species of Neillia grown here 
but some of them are not entirely hardy, and others have no particu- 
lar value as garden plants. Neillia sinensis, however, has never been 
injured by cold, and with its drooping clusters of pink flowers is a hand- 
some plant well worth a place in any garden. Rhododendron [Azalea) 
Schlippenbachii is one of the most important introductions of recent 
years. A native of northern Korea, it grows further north and in a 
colder country than any other Azalea, with the exception of the Rho- 
dora, and there can be little doubt that it can be grown successfully 
in the open ground much further north in the eastern United States 
than any of the other Asiatic Azaleas. It may be expected, too, to 
prove hardy further north than the American species with the excep- 
tion of Rhodora. The large pale pink flowers of this Azalea, although 
less showy than those of a few of the other species, are more deli- 
cately beautiful than those of any of the Azaleas which have proved 
hardy in the Arboretum. There are a few plants of this Azalea large 
enough to flower in the United States, and many seedlings have been 
raised here and in Europe during the last two years. Until these are 
large enough to flower it will probably remain extremely rare. Rhodo- 
dendron [Azalea) japonicum cannot be called a new plant for it has 
been growing in the Arboretum since 1898, but it is such a valuable 
plant and is still so little known or understood that it can perhaps prop- 
erly find a place in a list like this. The large, orange or flame-colored 
flowers make it when in bloom one of the showiest of all the hardy Aza- 
leas. Berberis Vernae has been mentioned in a recent number of these 
Bulletins; and it is only necessary to repeat what has already been said 
about it, that it is a hardy plant of exceptionally graceful habit among 
Barberries, with arching and drooping branches from which hang innum- 
erable slender clusters of small yellow flowers followed by small red 
fruits. Berberis Vernae has provedthe handsomest of the large number 
of Barberries with deciduous leaves found by Wilson in western China. 
Among the numerous species of Lilacs introduced into gardens from 
China during recent years Syringa Sweginzowii is considered the most 
beautiful by many persons. It is a tall shrub with slender erect stems 
which produce every year great quantities of pale rose-colored, fragrant 
flowers in long rather narrow clusters. It has the merit of being almost 
the last of the Lilacs in the Arboretum collection to bloom. Spiraea 
Veitchii has the merit, too, of being the last of the white-flowered 
Spiraeas to flower. It is a shrub already 6 or 8 feet tall in the Ar- 
boretum, with numerous slender stems and gracefully arching branches 
which about the first of July are covered from end to end with broad 
flower-clusters raised on slender erect stems. This Spiraea is one of the 
best of the hardy shrubs discovered by Wilson in western China, and by 
many persons it is considered the handsomest of the genus as it is now 
represented in the Arboretum. Evonymus planipes is a native of north- 
ern Japan and a large shrub with large dark green leaves and the in- 
conspicuous flowers of the genus; and it is only on account of the beauty 
of its fruit that this plant is included in this list, for the fruit which 
hangs gracefully on long slender stems is large, crimson, very lustrous 
and more showy than that of any of the other Burning Bushes in the 
Arboretum. 
