This is a very hardy plant which grows here into a tall wide bush and 
every spring covers itself with numerous large single white flowers faintly 
tinged with yellow. Of the single-flowered Roses which are hardy in New 
England this is one of the most valuable. 
Of the early flowering Rhododendrons in the collection at the eastern 
base of Hemlock Hill the most interesting is now Rhododendron Smir- 
nowii, a native of the Caucasus. This is a shrub with pale, gray-green 
leaves clothed below with a thick, felt-like rusty brown covering and 
light pink flowers in large clusters. It is very hardy but the leaves suffer 
from the summer sun, and half-shaded positions are favorable to its 
greatest beauty. Hybrids of this species with forms of Rhododendron 
catawbiense promise to be valuable garden plants. 
Vaccinium corymbosum, the High-bush Blueberry of New England 
swamps, has been largely planted in different parts of the Arboretum and 
is now covered with its white bell-shaped flowers. This is one of the 
most beautiful shrubs of eastern North America. The habit is good; the 
flowers and fruit are beautiful, and no other plant has a more splendid 
autumn color. The High-bush Blueberry, however, is rarely cultivated. 
Attention, however, has been recently called to it by a Bulletin of tbe 
Department of Agriculture in which the results of Dr. Coville’s experi- 
ments in propagating and cultivating this plant are published. 
Of the Viburnums with palmately lobed and veined leaves, and a ring 
of showy sterile flowers surrounding the flower-clusters, three species are 
cultivated in the Arboretum, Viburnum Opulus of northern and central 
Europe, Viburnum Sargentii of northeastern Asia, and Viburnum amer- 
icanum of northeastern North America. The first is the largest plant of 
the three, with larger and thicker leaves late-persistent in the autumn, 
and dark red fruit. The old-fashioned Snowball of gardens is a form of 
this species with all the flowers sterile, and there is a very dwarf form 
which rarely flowers. The flowers of Viburnum Sargentii are more 
showy than those of the other species, but the fruit is small and incon- 
spicuous. The habit of Viburnum americanum, the so-called High-bush 
Cranberry, is less compact than that of the other species. The flowers, 
however, are beautiful, and the fruit, which is translucent and very lus- 
trous, remains on the branches through the winter; in the autumn the 
leaves turn bright orange-red before falling. The three species are all 
very hardy. Viburnum americanum and Viburnum Sargentii have been 
generally planted in the Arboretum, and very large plants of Viburnum 
Opulus can be seen on the Parkway and in some of the other Boston parks. 
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. 
