22 
These plants can now be seen in flower on Azalea Path and there is a 
mass of R. canescens on the Meadow Road in front of the Linden 
Group. R. calendulaceum is the next species to flower, and a few 
plants have already opened their orange, yellow or reddish flowers 
which are not fragrant. This shrub is an inhabitant of the mountain 
regions from southern New York to Georgia, and is extremely abund- 
ant on the lower slopes of the high mountains of North Carolina and 
Tennessee. In flower it is the most showy of the American Azaleas 
established in the Arboretum, and one of the most beautiful of all 
flowering shrubs. A large mass of this Azalea has been planted on 
the slope below Azalea Path, and occasionally large specimens can be 
seen on the border plantations along some of the roads. The next 
species to flower, R. arborescens, is also a native of the mountain 
region from Pennsylvania to Georgia where in sheltered valleys it 
sometimes grows from fifteen to eighteen feet tall. The flowers, which 
appear after the leaves are nearly fully grown, are white or faintly 
tinged with rose color, and are made conspicuous by the long bright 
red filaments of the stamens; they are very fragrant, and the young 
leaves have the odor of new mown grass. Less showy in the color of 
the flowers, perhaps, than the yellow-flowered Azalea, it is one of the 
most beautiful of all hardy Azaleas. The last species to flower, the 
Clammy Azalea or Swamp Honeysuckle, R. viscosvm, is a common in- 
habitant of the swamps of the eastern states, especially of those in the 
neighborhood of the coast. The small flowers are pure white and cov- 
ered with clammy hairs, and the leaves are often of a pale bluish color, 
especially on the lower surface. This plant is valuable for the lateness 
of its flowers which do not open before the flowers of most hardy 
shrubs have passed, and for their fragrance. These shrubs are all 
good garden plants although, like other Rhododendrons, they cannot be 
made to live in soil impregnated with lime. They are not often culti- 
vated, however, because it is not easy to find them in nurseries, for 
few nurserymen in the United States care to take the time and 
trouble to raise such plants from seeds, the only successful way in 
which they can be propagated. 
The new Chinese Cotoneasters. Of the shrubs introduced from west- 
ern China by Wilson the most successful perhaps as garden plants be- 
long to the Old World genus Cotoneaster. At least eighteen of these 
species are hardy in the Arboretum, and several of the plants have 
now grown large enough to show their habit, the beauty of their flow- 
ers and fruits, the brilliancy of their foliage and their ability to adapt 
themselves to the peculiarities of the New England climate. The most 
showy species now in flower are C. multijiora and its variety calocarpa, 
and C. hupehensis. C. multijiora is a tall shrub with slender, wide- 
spreading, gracefully arching, bright chestnut brown stems and 
branches, dull pale gray leaves, white flowers half an inch in diameter 
borne along the whole length of the branches in compact clusters on 
short lateral twigs, and black fruits. C. multijiora is a widely dis- 
tributed and common plant in southern Siberia and northern and west- 
ern China, and has been in cultivation for several years. The variety, 
which has larger fruits, was discovered by Wilson near Sung-pan Ting 
