72 
states {Juniperus virginiana). One of these (var, globosa) is a compact, 
round-topped bush taller than broad, and in the Arboretum collection 
where it has been growing for fifteen years it is about three feet high. 
The history of this plant is not known at the Arboretum. It came here 
from Holland and probably originated in a European nursery. The vari- 
ety Kosteriana forms a wide open bush with erect and spreading, grace- 
fully arching stems from two to three feet tall. This is an unusually 
handsome plant which will prove useful for the margins of beds of taller 
growing conifers. This variety probably also originated in a European 
nursery. More interesting even than these nursery forms of the Red 
Cedar is a plant which grows on a few wind-swept cliifs on the coast 
of Maine. Plants of this form are not more than eighteen inches high, 
with prostrate stems which spread into dense mats sometimes fifteen 
feet across. These plants bear fertile seeds, and there are seedlings, 
grafted plants and young collected plants growing in the Arboretum, 
but it is too soon to judge if they will retain the habit of the wild 
plants when planted in less exposed situations. If this form of the 
Red Cedar retains its dwarf habit in cultivation it will be one of the 
handsomest of the prostrate Junipers. Of Juniperus chinensis there 
are a number of interesting shrubs in the Arboretum collection. The 
handsomest of these, var. Pfitzeriana, which grows in the form of a 
low broad pyramid, is the most satisfactory of all Junipers in this 
climate. Fortunately it can now be found in most American nurseries. 
There are dwarf round-topped forms of J. chinensis with green and 
with yellow leaves which are less than a foot high; and a form of 
this Juniper, var. Sargentii, from northern Japan with prostrate stems 
makes mats now eight or ten feet across here. This is a form repro- 
ducing itself from seed and has proved to be one of the best of the 
mat-like Junipers in the collection. With the exception of the dwarf 
form of the European J. sabina (var. minor), the lowest Juniper in 
the collection is J. horizontalis which has long prostrate stems with 
blue-green or in some forms steel blue leaves. This is a North Amer- 
ican plant which is widely distributed from the coast of Massachusetts 
to British Columbia. There are fine masses of this plant in the collec- 
tion. Less well known is J. conferta, another species which covers 
with long prostrate stems the sand dunes on the coast of Japan. 
Raised first in the Arboretum three years ago from seeds collected by 
Wilson in northern Japan there is every reason to believe that this 
will prove a useful plant in this country. Another prostrate Japanese 
Juniper, J. procumbens, is better known. It is distinguished by its 
sharply pointed leaves marked on the upper surface by two white lines. 
This Juniper has not produced seeds and is not known except as a cul- 
tivated plant; it is planted, however, in nearly every Japanese garden 
and has been much planted in California and occasionally in the eastern 
states. A dwarf Juniper, J. communis var. depressa, covers thousands 
of acres of hillsides in the northeastern states where many forms occur 
differing in the height and in the width of the leaves. These are 
coarser and less desirable garden plants than J. horizontalis and the 
different low-growing varieties of J. chinensis and J. virginiana. 
These Bulletins will now be discontinued until next spring. 
