occasionally in pairs in the axils of the leaves, rather less than half an 
inch in diameter and pale primrose yellow in color. They are produced 
this year in profusion, but the greatest beauty of this plant is in the 
leaves which, although not large, are silvery white on the lower surface 
and in the autumn turn brilliant scarlet on the upper surface while the 
lower surface retains its spring and summer color. This Barberry was 
sent to Europe a dozen years ago and soon reached the Arboretum where 
it is one of the handsomest shrubs of comparatively recent introduction. 
It can be seen in the Shrub Collection and among the Barberries on 
Hickory Path near Centre Street. 
The Hobble Bush or Moose wood ( Viburnum alnifolium or lantanoides) 
is the first of the genus to flower here and one of the handsomest shrubs 
of northeastern North America where it grows in cold moist woods. In 
cultivation it is occasionally seen in good condition, growing to a large 
size, flowering freely, and spreading by the rooting of its inclining 
branches, but it has never done well in the Arboretum where the right 
place for it has probably not yet been found. The Hobble Bush is one of 
the species with broad flat flower-clusters surrounded by greatly enlarged 
neutral white flowers, the flowers opening with the unfolding of the 
leaves. A plant just coming into flower can be seen among the dwarf 
Birches on the left-hand side of the Bussey Hill Road and just below the 
point where it turns abruptly to the left in ascending the hill. 
In Prinsepia sinensis , a member of the Rose Family and a native of 
northern China, the Arboretum has an interesting addition of recent 
introduction to its list of hardy shrubs. Prinsepia sinensis has small, 
axillary, bright yellow flowers, which are produced in profusion, and it 
is one of the earliest shrubs in the Arboretum to expand its bright green 
leaves which are nearly fully grown when the flower-buds open. It is 
now in bloom on the right-hand side of Hickory Path, going from the 
Valley Road, close to Centre Street. 
The hybrid Spiraea arguta ( multiflora x Thunbergii) , which is one of 
the handsomest of the early flowering Spiraeas, is a more desirable plant 
here than S. Thunbergii which flowers at the same time, but is never 
vigorous and is often injured by cold. This hybrid is in the Shrub 
Collection and large plants in flower can be seen in the supplementary 
Spiraea Collection on the short path between the two branches of Hick- 
ory Path near the middle of the Hickory Group. 
The Hickories are rapidly expanding their leaf -buds and these as they 
open are beautiful and interesting because the inner bud-scales rapidly 
enlarge before falling, and on some trees are bright red and on others 
yellow or green, appearing like the petals of some great flower. The 
beauty of these scales lasts for only a few days, but as the buds of the 
different species open during a period of at least two weeks, an observer 
who is able to visit the Arboretum several times at this season can see 
all of the Hickories which are hardy here at an interesting period of 
their development. 
The Arboretum will be grateful for any publicity 
given these Bulletins. 
