48 
Cytisus scoparius, var. Andreanus compactus. This is a dwarf form 
of a variety of the Scotch Broom (var. Andreanus) which differs from- 
the ordinary form of the Broom in the dark crimson wing petals of the 
flowers. In the Arboretum this dwarf plant with nearly prostrate 
stems rising only a few inches above the surface of the ground is per- 
fectly hardy, which cannot be said of any of the other varieties of 
Cytisus scoparius which have been tried here, and is now covered with 
its large and brilliant flowers which make a bright spot in the Shrub 
Collection and on Hemlock Path near Centre Street. 
Late-flowering Viburnums. The Arboretum in early summer owes 
much to some of the late-flowering Viburnums which have been largely 
planted here. Among these are three of the blue-fruited American 
species and the red-fruited Japanese V. dilatatum. Of the American 
species V. cassinoides has been in flower during the last two weeks and 
on many of the plants the flowers have already faded. A native of 
swamps, in the northeastern part of the country, where it sometimes 
makes slender straggling stems fifteen or twenty feet high, this Vibur- 
num grows well on drier ground and in cultivation is a round-topped 
and compact shrub. The leaves are thick, lustrous and finely toothed, 
and vary greatly in size and shape, and the flowers, which are slightly 
tinged with yellow, are arranged in concave clusters which vary in size 
on different plants. The fruit is larger than that of the other American 
summer-flowering Viburnums, and is even handsomer than the flowers. 
When fully gi*own it is first yellow-green, later becoming pink and finally 
blue-black, fruits of the three colors occurring in early autumn in the 
same cluster. This is one of the handsomest of all the Viburnums 
which can be successfully cultivated in this climate. The other Amer- 
ican late-flowering species are closely related and have more coarsely- 
toothed leaves, wide flat clusters of white flowers and small blue fruits. 
The earliest to bloom, V. dentatum, is already dropping its flowers. 
It is a common roadside and meadow shrub in the eastern parts of the 
country and, like many of our native shrubs, is greatly improved by 
good cultivation. As its flowers fade those of V. venosum begin to 
open. In habit and general appearance this resembles V. dentatum, 
but the young branches and the lower surface of the leaves are thickly 
covered with a coat of pale hairs. This Viburnum grows only in the 
neighborhood of the coast from the southern shores of Cape Cod to New 
Jersey. Viburnum Canbyi, the last of all the Viburnums to flower 
in the Arboretum, resembles V. venosum but flowers two or three 
weeks later, and the flower-clusters and fruits are larger. It is a 
native of eastern Pennsylvania, northern Delaware and central Indiana. 
This Viburnum has grown to a large size in the Arboretum and speci- 
mens ten or twelve feet high and broad can be seen near the Admin- 
istration Building and along the Meadow Road. V. dilatatum has been 
covered with flowers this year and is a broad, shapely and vigorous 
shrub with very dark green leaves and wide flat clusters of pure white 
flowers followed late in the autumn by small’ bright red fruits which 
often remain on the plants until late in the winter. 
