ter; in the autumn the leaves turn bright orange-red before falling. The 
three species are all very hardy. Viburnum americanum and V. Sar- 
gentii have been generally planted in the Arboretum, and very large 
plants of V. opulus can be seen on the Parkway and in some of the other 
Boston parks. 
Among the other American species Viburnum alnifolium, the Hobble- 
bush, and V. prunifolium have been mentioned in recent issues of this 
bulletin, and their flowers have already gone. The species which is now 
so conspicuous in many parts of the Arboretum is the Nanny-berry, 
V. Lentago. This common New England roadside plant is a large shrub 
or small tree with large, thick, lustrous leaves, large, rounded clusters 
of creamy white flowers which are followed by drooping blue-black fruits. 
There is no better or hardier plant for large shrubberies or the borders 
of woods, and much of the early June beauty of the Arboretum is due to 
its general use here. It is one of the three American arborescent species, 
the others being V. prunifolium and V. rufidulum. This last is a south- 
ern plant distinguished by its thick and shining leaves and by the thick 
red-brown, felt-like covering of the winter-buds and leaf-stalks. V. 
rufidulum is still rare in cultivation but fortunately it is hardy in the 
Arboretum. Young plants are now in flower in the Viburnum Group on 
the Bussey Hill Road. 
On the right-hand side of the Bussey Hill Road, opposite the Lilacs, a 
large mass of Viburnum pubescens completely covered with small clus- 
ters of white flowers is now one of the most conspicuous objects in the 
Arboretum. This shrub grows from western New York westward and 
southward, and, although hardly known in gardens, is a first-rate garden 
plant. The eastern American species with bright blue fruits, V. denta- 
tum, V. venosum , and V. Canbyi, will flower later in the order in which 
they are mentioned here. They are common wild plants in the regions 
they inhabit and are all greatly improved by good cultivation. They 
have been freely used in different parts of the Arboretum and their -value 
for the decoration of American parks is at last beginning to be appre- 
ciated. 
The Arrowwood, Viburnum acerifolium, will soon be in flower. This 
inhabitant of northern forests is a small, shade-enduring shrub with neat 
foliage, small flower-heads and black fruit. It can be seen in large 
masses on the right-hand side of Bussey Hill Road where in going up the 
hill it is the last of the small collection of Viburnums planted in the grass 
border between the drive and walk. Viburnum affine, considered a 
variety of V. pubescens, a rare plant from southern Missouri, is now 
flowering in the Viburnum Group where in the next two weeks flowers 
may be seen of the still rarer V. molle from the southern states. Per- 
sons interested in the cultivation of shrubs should study carefully at dif- 
ferent seasons of the year the Viburnums which have been assembled in 
the Arboretum. 
Enkianthus is an eastern Asiatic and Himalayan genus, with drooping 
clusters of small, bell-shaped flowers, and dry capsular fruits, and is re- 
lated to Andromeda. Three Japanese species are well established in the 
Arboretum and can be seen in the Shrub Collection and in a large group 
on the right-hand side of Azalea Path. The handsomest of the three 
species, E. campanulatus, is a tall shrub with slender erect stems and 
branches, and light yellow or rose-colored flowers. It is found in every 
Japanese garden where it is valued for the bright scarlet color the leaves 
assume in autumn, and where it is often cut into balls and other fantastic 
shapes. This Enkianthus is a garden plant here of real value. The 
