the native species which is greatly improved by cultivation and splendid 
large plants can be seen on the right-hand side of the entrance to the 
Administration Building and on the Meadow Road. 
Some of the wild roses have been largely planted along several of 
the drives and their flowers add much to the interest and beauty of 
the Arboretum at this time. The flowers of the earliest of the five New 
England species, Rosa blanda , have already gone and the latest to 
flower, R. caroliniana, is not yet in bloom, but the others R. virgini- 
ana or lucida , R. humilis, and R. nitida, are at their best. The most 
beautiful of these three roses is perhaps R. nitida with its rather dark- 
colored flowers and short stems covered with bright red prickles. It is 
always dwarf in habit and is found from Massachusetts to Newfound- 
land. R. virginiana , which is the common rose of the New England 
seacoast, is a taller plant with thick very lustrous leaves, and flowers 
which range in color from dark red to pink. There is also a white-flow- 
ered form of this plant found in Maine a few years ago. In the Ar- 
boretum there are forms with thinner and duller leaves which may be 
natural hybrids with R. humilis which is the common Wild Rose of 
the interior, that is of regions beyond the immediate influence of the 
sea. This is a low plant with dull leaves, and the least ornamental of 
the native Roses. This Rose or some of its numerous hybrids are gen- 
erally sold in nurseries for R. virginiana. The wild roses flower at the 
same time as Cornus rugosa mentioned in the last issue of these bul- 
letins, and when this Cornus and these Roses are planted together a 
beautiful combination of color is obtained. 
The first species to flower in the collection, and one of the gems of the 
genus, Hypericum Buckleyi , is just opening its bright yellow flowers in 
the Shrub Collection where it is now well established. It is a dwarf 
plant growing here only a few inches high, but spreading into a broad 
mat which becomes covered with flowers, and these remain in good con- 
dition for a long time. H. Buckleyi is very rare in cultivation, although 
it is well suited for a sunny position in the rock garden. Naturally it 
grows on rocky cliffs in the southern Appalachian region where it is 
nowhere very abundant. 
A few of the fruits of early summer are beginning to be conspicuous 
in the Arboretum. The most beautiful, perhaps, are the bright keys of 
Acer tataricum, a small Maple tree from southeastern Europe and the 
adjacent parts of Asia. This is an early flowering, very hardy tree 
well worth cultivating for the brilliancy of its fruit alone. It is a very 
old inhabitant of the gardens of western Europe and the United States, 
but since the introduction of the Japanese Maples it has been rather lost 
sight of. Plants can be seen in the Maple collection. In the Shrub 
Collection the bright red fruits of a North American Elder, Sambucus 
pubens, are now beautiful and conspicuous, as are those of the rare 
variety of this plant with orange-colored fruits (var. leucocarpa). The 
fruits of the Old World plants of this group are still green or only 
just beginning to turn red. 
The Arboretum will be grateful for any publicity 
given these Bulletins. 
