46 MASSACHUSETTS HORTICULTURAL SOCIETY 



dwarf Junipers which can be grown successfully in this climate. 

 This shrub was named for Professor Sargent because he was the 

 first man to collect it, finding the seeds in southern Hokkaido, in 

 1892. The plants raised from the seed which he brought home are 

 probably the only ones in cultivation. It can be seen to advantage 

 on the Hemlock Hill road, opposite the Laurels, where there are 

 several large plants. 



Several other Junipers are to be found in the Arboretum collec- 

 tion, and are of particular interest to landscape gardeners. Some 

 of the more prostrate forms are highly valuable for covering banks 

 and the margin of ponds. Juniperus horizontalis is an especially 

 good garden plant, and Juniperus procumbens, a Japanese species, 

 is being planted largely in California. It is perfectly hardy in the 

 Arboretum, and may be grown as well here as in the west. 



Eucommia ulmoides is the so-called hardy Rubber-tree and one of 

 the most interesting of Chinese plants. The leaves contain a 

 small amount of rubber, as can be seen by pulling a leaf apart. 

 It has no economic value but Eucommia is a good ornamental tree 

 for the northern states on account of its thick, dark green, shining 

 leaves and good habit. It is well established in the Arboretum 

 where it has flowered. 



The plantation of young Cedars of Lebanon is the result of an 

 experiment in naturalization undertaken by the Arboretum. The 

 Cedar of Lebanon grows on the licbanon Range in S;yTia, and also 

 on the Anti-Taurus Mountains in Asia Minor, a more northern 

 and much colder region. In its southern form it is not hardy in 

 Massachusetts and an effort to secure a hardy race of this important 

 and interesting tree led the Arboretum several years ago to have 

 seeds gathered at the northern limits of its range in Asia Minor. 

 Plants raised from these seeds have been growing in the Arboretum 

 for fifteen years in exposed, windswept positions, and have not 

 been injured by the exceptional cold of several winters. The 

 seedlings of no other conifer raised in the Arboretum have grown 

 so rapidly, the largest of these plants having attained the height 

 of twenty-two feet in twelve years from the time the seed was 

 planted. 



As had been said, the Arnold Arboretum is really a museum of 

 trees, the greatest institution of the sort in the world. It is fitting. 



