fact that it blooms late in the season. A mass of these plants can be seen 
on the edge of the native woods on both sides of the Meadow Road; it is 
also established on Azalea Path, and is scattered through the borders in 
different parts of the Arboretum. A handsomer plant and one of the most 
beautiful of all Azaleas is Rhododendron {Azalea) arborescens. This is an 
inhabitant of the Appalachian Mountains from Pennsylvania southward 
and is a tall shrub with leaves dark and shining above and pale below, 
with clusters of large white flowers the beauty of which is increased by 
the bright scarlet filaments of the stamens and styles which rise above 
the corolla. The fragrance of these flowers is like that of newly mown 
hay. This plant was introduced into English gardens more than a century 
ago but it appears to have been soon lost from them and from cultivation 
until 1880 when seeds were first sown in the Arboretum and from the Ar- 
boretum sent to Europe. A mass of this Azalea is established on the 
right-hand side of the Valley Road in front of the group of Hickories. 
From the Valley Road and in other parts of the Arboretum may be 
seen the spikes of the yellow flowers of the Woad Wax, Genista tincto- 
ria, as they rise among Wild Roses and other shrubs. This Genista is 
to admire but not to plant, for as the farmers of Essex County in Massa- 
chusetts know to their cost it may become a dangerous weed; as it has 
ruined many hundreds of acres by plants spread from those brought 
from England and first planted in Governor Endicott’s garden in Salem. 
The first of the shrubby Hydrangeas to bloom, Hydrangea Bretschnei- 
deri, is just opening its flowers. This is a large and hardy shrub from 
northern China and Manchuria, and in this climate is one of the best 
plants of the genus. It can be seen in the Shrub Collection and there is 
a large shrub near Mr. Dawson’s house on Centre Street. 
Attention is called to Clematis tangutica which is planted on one of 
the trellises on the east side of the Shrub Collection. This very hardy 
climber from the extreme western part of China has been in bloom for 
the past three weeks and the flowers will continue to open for sometime 
longer. They are vase-shaped and bright clear yellow, and as they fade 
are succeeded by heads of fruits with long, glistening hairy tails. As the 
flowers open gradually through several weeks flowers and fruits are on 
the plant at the same time. Among perfectly hardy vines recently intro- 
duced this is one of the best. 
Of the plants now in flower in the Arboretum, however, there is not 
one more beautiful or more worthy of a place in every garden than Mag- 
nolia glauca , which is sometimes called the Sweet Bay. For nearly 
three weeks its cup-shaped, creamy white flowers have been opening and 
fading and they will continue to open for several weeks. Their fragrance 
fills the air, especially at sunset, about the Jamaica Plain entrance. 
An illustrated guide to the Arboretum containing a map showing the 
position of the different groups of plants has recently been published. It 
will be found useful to persons unfamiliar with the position of the differ- 
ent groups of plants. Copies of this guide can be obtained at the Admin- 
istration Building in the Arboretum, from the Secretary of the Massa- 
chusetts Horticultural Society, 300 Massachusetts Avenue, Boston, from 
The Houghton, Mifflin Company, 4 Park Street, Boston, and at the Old 
Corner Bookstore, Bromfield Street, Boston. 
The Arboretum will be grateful for any publicity 
given these Bulletins. 
