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from which to raise a race of hardy, late-flowering Rambler Roses. 
It is now in bloom in the Shrub Collection. 
Rosa setigera. This is the Prairie Rose from the central part of the 
continent where it is scattered from Michigan to Texas. It is a vig- 
orous plant with tall arching stems, pale handsome leaves and broad 
clusters of pure pink flowers. No wild Rose is more beautiful, and the 
hybridizer with all his cunning has not produced a single Rose which 
can compare with this wild plant in grace of habit or in charm of 
flowers. There is a mass of these Roses just coming into bloom on 
the right-hand side of the Forest Hills Road in front of the Cherry 
Collection. 
Coluteas, known as Bladder Sennas, are useful summer flowering 
shrubs. Three species can now be seen in bloom in the Shrub Collec- 
tion, C. arborescens, C. cilicica and C. orientalis. The first is a native 
of southern and southeastern Europe, and is a very old inhabitant of 
gardens, for it is said to have been cultivated in England for at least 
three centuries. It is a vigorous and hardy plant with erect much- 
branched stems, deciduous pinnate leaves and axillary racemes of 
yellow pea-shaped flowers; these are produced on the branches of the 
year and continue to open as the branches grow and new leaves ap- 
pear. The flowers are followed by inflated bladder-like pods which are 
more or less tinged with rose color and are very ornamental. Fully 
grown pods from the first flowers appear on the plants with the late 
flowers. This plant does not occur to be as well known in this coun- 
try as it is in England where it is now often naturalized. Colutea 
cilicica is a native of Asia Minor, and very similar to C. arhorescens, 
and as a garden plant is not superior to that species. C. orientalis is 
distinguished from the other species by its pale grayish foliage and by 
its sulphur-colored or orange-red flowers. It is a native of Asia Minor 
and has long been known in gardens. This shrub is worth a place in 
collections of summer-flowering plants. 
Cornus paucinervis. The plant of this Cornel in the collection of 
Chinese shrubs on the southern slope of Bussey Hill is covered with 
flower-buds which will open in a few days. It is a shrub five or six 
feet tall with erect stems, small, narrow, pointed leaves with only 
two or three pairs of prominent veins, small flat clusters of white 
flowers and black fruits. Although this Cornus was found by Wilson 
at low altitudes in the valley of the Yangtsze River, it has proved per- 
fectly hardy in the Arboretum and is one of the most distinct and 
interesting plants introduced by him. 
Heather. It does not seem to be generally understood that the 
Heather of northern Europe {Calluna vulgaris) can be successfully 
grown in this country, although it is now many years since it was dis- 
covered that it had become naturalized in Nova Scotia and in Tewks- 
bury and Townsend, Massachusetts. The ends of the branches are 
sometimes killed here in severe winters, but this is an advantage 
rather than an injury to the plants, for English gardeners to secure 
the best results cut back their plants severely after they have finished 
flowering. In this country the Heather should be planted in well- 
drained, sandy soil fully exposed to the sun; planted in the shade it 
usually suffers in cold winters as in the shade it continues to grow late 
in the autumn and the wood does not ripen properly. There are a 
