68 
all cone-bearing trees which can be grown in this part of the country. 
One plant of the Japanese Tsuga densifiora was killed during the 
winter, but several others were uninjured. Small plants of the Jap- 
anese T. Sieboldiana have lived in an exceptionally sheltered position, 
but there is little hope that this beautiful tree, which is more southern 
in its range than the other Japanese Hemlock will ever live long in 
Massachusetts. A small plant of the Hemlock of the Northwest coast 
of North America {T. heterophylla), the largest and handsomest of all 
Hemlock trees, was uninjured in a sheltered position. There is not 
much probability, however, that this tree will live for more than a 
few years in this part of the country. The Chinese Hemlock {T. chi- 
nensis) was injured by the winter and probably will never be very suc- 
cessful here. 
Pines. The European and Asiatic" Pinus sylvestris, the so-called 
Scotch Pine, the Austrian and other forms of the European Black Pine 
(P. nigra), the forms of the European P. montana, and the Swiss and 
Siberian forms of the Stone Pine (P. Cembra) have not been injured. 
The Japanese White Pine (P. parvijiora), the Japanese Red Pine (P. 
densifiora and the Korean form of this tree which the Japanese botan- 
ists call Pinas gracilis, seem able to support the New England climate 
without injury. The Korean Nut Pine (P. koraiensis) which has produced 
seeds in the Arboretum for several years, and the Lacebark Pine of 
northern China (P. Bungeana) are uninjured. Of the Pines of western 
North America only Pinus monticola, P. ponderosa var. scopulormn, 
and P. Jeffreyi grow successfully in the east, and these are uninjured, 
as are the eastern American P. pungens and P. virginiana. The 
northern Pinus Banksiana, which just reaches northern New England, 
with a doubtful station on Nantucket, grows well in the Arboretum 
but not as well as it grows much further north. Although killed last 
winter in some New England collections, the Japanese Umbrella Pine 
was little injured in the Arboretum. 
None of the Arbor Vitae in the large collection of these trees here 
suffered with the exception of the Chinese Thuya orientalis which is 
never a very hardy or satisfactory tree in this part of the country. 
It is of particular interest that plants of the we&tern Arbor Vitae, the 
so-called Red Cedar of the northwest ( 7 *. plicata), raised here from 
seeds gathered in Idaho, have been uninjured, for this is one of the 
great conifers of the world. In a sheltered position several plants of 
the California Incense Cedar were little injured by the winter. There 
has been little injury to the Junipers, and the Larches and the Chinese 
Pseudolarix have not suffered. 
New Chinese Conifers. It is too soon to say much about the new 
conifers introduced by Wilson from northern China. All the forms of 
Pinus sinensis are growing well and appear to be hardy. All the 
Spruces have also done well with the exception of Picea Sargentiana 
which has suffered from cold and will probably not be hardy here. 
The Chinese Firs grow less well than the Spruces and only Abies 
Delavayi gives much promise of success. 
