twenty feet high. In cultivation this has proved one of the handsomest 
of all the Viburnums introduced into the Arboretum. The leaves, which 
are thick and lustrous, vary greatly in size and shape. The flowers are 
slightly tinged with yellow and are borne in large slightly convex clusters. 
The fruit is larger than that of the other species mentioned in this bulle- 
tin and, at first yellow-green, later becomes bright pink and finally blue- 
black and covered with a handsome pale bloom, fruits of the three colors 
at a certain period occurring together in the same cluster. The third of 
these species, Viburnum venosum, is now in full flower. This resembles 
Viburnum dentatum but it blooms a couple of weeks later and the young 
branches and the under surface of the leaves are covered with a thick 
coat of stellate hairs. This species is found growing naturally only in 
the neighborhood of the coast from Cape Cod and Nantucket to New Jer- 
sey. A larger and handsomer plant, with larger leaves, more showy 
flowers and larger, later-ripening fruits, is our fourth species, Viburnum 
Canbyi. This plant appears to be confined to eastern Pennsylvania and 
to northern Delaware where it is by no means common. This is the last 
of the Viburnums to open its flowers in the Arboretum where there are 
large specimens along the Meadow Road and in front of the Administra- 
tion Building. 
The Silky Cornel, Cornus Amomum, is now opening its small white 
flowers. This has been much used in the Arboretum borders but in culti- 
vation it is not a satisfactory plant unless it can be given sufficient room 
for its wide-spreading branches to extend out freely and spread over the 
ground. When well planted it forms a handsome and symmetrical single 
specimen, and it is well suited for the front of groups of larger plants or 
for the margins of streams and ponds where its long branches can hang 
gracefully over the water. The purple stems are attractive in winter, 
and the bright blue fruits which ripen in the autumn add to the attrac- 
tions of this native shrub. It is in the Cornel Group at the junction of 
the Meadow and Bussey Hill Roads where there are two southern species 
which will not be in flower for a week or two, Cornus asperifolia and 
Cornus stricta. The flowers of a Cornel useful as a flowering plant and 
of no little scientific value, Cornus Arnoldiana, are just beginning to 
fade. This is a hybrid between two native species and sprang up natur- 
ally in the Arboretum. The oldest plants are now ten feet high and 
nearly as broad with erect stems, and this year have been covered with 
flower- clusters which are handsomer than those of its parents, Cornus 
racemosa, or as it is still more often called, Cornus paniculata and 
Cornus obliqua. The flowers, however, are its chief beauty for this 
hybrid bears little fruit, and in the autumn it is less interesting than 
Cornus racemosa which is as beautiful in October when it is loaded with 
its white berries on bright red stalks as it is when the flowers open the 
middle of June. 
The flowers of the earliest of the Azaleas, or Rhododendrons as bota- 
nists now call these plants, were open two months ago. Those of the last 
to flower in the long procession of these plants which can be cultivated in 
the Arboretum are just appearing. This last species is Rhododendron 
{Azalea) viscosum , the Clammy Azalea or, as it is often called, the Swamp 
Honeysuckle. This is an inhabitant of swamps in the eastern part of the 
United States, and is chiefly valuable as a garden plant in the delightful 
fragrance of the white, long-tubed, clammy, viscid flowers and in the 
