leaf-mining insect which causes them to turn brown in early summer. 
These, however, are pests which can be controlled, and the American 
Hawthorns, the existence of many of which was not even suspected a 
dozen years ago, seem destined to play an important part in the dec- 
oration of American and European parks and gardens. 
Another North American genus of the Rose Family, Aronia, some- 
times considered a section of the genus Pyrus, also contains plants val- 
uable for the garden and the shrubbery. There are three species, all 
widely distributed in the eastern part of the country, A. melanocarpa, 
A. atropurpurea and A. arbutifolia ; they all have small white flowers 
in erect compound clusters, showy fruits and handsome foliage. The 
typical A. melanocarpa is a shrub 12 or 18 inches high with stems 
spreading into a broad mat. There is a form of this species (var. elata ), 
however, which is much more common and grows into a tall, broad 
shrub from 6 to 10 ft. tall, and another form (var. grandifolia) with 
broader leaves, also a tall shrub. The fruit of these species is black 
and lustrous, and drooping on long stems remains on the plant until the 
beginning of winter. Aronia atropurpurea is also a tall erect shrub, 
in general habit and foliage like the var. elata of the first species. 
The fruit, however, is dark vinous red and ripens and falls earlier. The 
leaves of these two species turn orange and red in the autumn before 
falling. Aronia arbutifolia is a tall, slender and more irregular grow- 
ing plant with later flowers, smaller leaves and erect clusters of smaller 
bright scarlet fruits which remain on the plants without change of color 
well into the winter. The brilliant fruit and the bright scarlet of the 
autumn leaves make this late in the season one of the most beautiful 
of the native shrubs. All the forms of Aronia take kindly to cultiva- 
tion and are now in flower in the Shrub Collection. They have also 
been largely planted in the shrubberies along the Arboretum roads. 
The Highbush Blueberry, Vaccinium corymbosum, has never flowered 
more abundantly in the Arboretum than this year, and it is desirable 
to call attention again to this wonderful plant which is beautiful in its 
flowers, its abundant edible blue fruits, and in the splendid scarlet 
of its autumn leaves. The Highbush Blueberry, which grows naturally 
along the moist borders of swamps and other low places where it oc- 
casionally reaches the height of twelve or fifteen feet, is easily culti- 
vated and grows freely in good garden soil. On the plants in the Ar- 
boretum, where they have been largely planted, the flowers differ con- 
siderably in size and in the time of opening. They vary, too, in the 
size and quality of the fruit, but all the forms are equally valuable as 
garden ornaments. For its fruit, which is the best of all Blueberry 
fruits, for the beauty of its flowers and its autumn leaves, this shrub 
cannot be too often planted. There are several plants on each side of 
Azalea Path near its entrance from the Bussey Hill Road, and the 
Highbush Blueberry can be seen now in full flower in many of the 
roadside plantations. 
The Arboretum will be grateful for any publicity 
given these Bulletins. 
