2 
several centuries ago are some of this species in the avenue of this 
tree leading to the Tombs at Nikko in Japan. Outside of Japan, even 
in the most favored parts of Europe, it does not grow particularly 
well, and in New England it will never be more than a curiosity. 
Picea Breweriana is a large tree of northwestern California and south- 
eastern Oregon. This is the last of the large conifers discovered in 
California and is still little known in gardens. The Arboretum plant 
is in a sheltered position on Hemlock Hill where it has been growing 
slowly for ten years and is perfectly healthy, all the earlier attempts 
to cultivate this tree here having failed. The leaves of the Libocedrus 
are often browned but are quite green this spring. This tree has been 
grown here since 1898 and was raised from seeds collected at East 
Applegate, Oregon. It is not probable that it will ever make in New 
England a large or valuable tree. It is interesting that one species of 
the large and important genus Cupressus has lived uninjured on Hem- 
lock Hill during the past winter. This is Cupressus Macnabiana, a 
well known California tree long cultivated in Europe and recently dis- 
covered in Oregon. Seeds from an Oregon tree were obtained in 1917 
and these seedlings have so far proved perfectly hardy. 
Of the few California conifers like the Sugar Pine and the mountain 
White Pine which are established in the Arboretum few of the trees 
are confined to the state, the others ranging out of the state north, 
and often east to the Rocky Mountains. The one exception is one of 
the two Foxtail Pines, Pinus Balfouriana. This is a dwarf, slow-grow- 
ing tree first discovered on Scott Mountain vrest of Mt. Shasta in the 
northwestern part of the state and later on the Whitney Plateau of 
the southern Sierra Nevada where it forms extensive open forests up 
to altitudes of 11,500 feet. The Arboretum plant was obtained in 1908 
from the Biltmore Nursery in North Carolina. It has grown very 
slowly but appears perfectly hardy but will never be more in this clim- 
ate than a curiosity. This is true too of the other Foxtail Pine, Pinus 
aristata, of northern Arizona and New Mexico, and southern Colorado. 
This tree has been growing in the Arboretum since 1910 when it was 
obtained from the Hesse Nursery in Germany. Pinus Balfouriana is 
interesting as the only conifer confined exlusively to California which 
has proved hardy in the Arboretum. In addition to those which grow 
north and east of the state Pinus ponderosa var. Jeffreyi, which grows 
fairly well here, extends from the southern and western Sierra Nevada 
into Lower California. 
The most beautiful conifer introduced into cultivation by the Arbor- 
etum is probably Tsuga caroliniana. The seeds of this tree were first 
planted at the Arboretum in 1881 and the trees raised from these seeds 
are to most people the handsomest conifers in the collection, almost as 
broad as tall, thickly covered to the ground with gracefully drooping 
branches, and clothed with leaves dark green above and pale below. 
It has taken a long time for the beauty of this tree to be really appre- 
ciated, and there are few if any cultivated large trees outside of the 
Arboretum. It is becoming better known, however, every year, and 
one Massachusetts nursery company can now supply plants of various 
sizes in great numbers and at reasonable prices. 
The Colorado Picea Engelmannii of the Rocky Mountains is another 
