(271) 
Salicetum.—The area occupied by this plantation is be- 
tween the main driveway and the Bronx River, north of the 
fruticetum, and comprises several acres. Here are brought 
together moisture-loving willows (Salix) and poplars 
(Populus) as a collection apart, many species grown here 
not being represented in the arboretum and fruticetum. 
In the corner of the salicetum, next to the driveway, is a 
group of willows, consisting, in part, of the red-stemmed 
yellow willow, of horticultural origin, and the Ural purple 
willow. To the east of this may be found the golden, or 
yellow willow, of common occurrence in eastern North 
America, and Bashford’s willow, a native of France. Along 
the west bank of the Bronx River may be found the cotton- 
wood, or Carolina poplar, found wild in eastern North 
America; and a row of the weeping willow, a native of Asia. 
At the northern end of the area devoted to this plantation 
are to be found, among others, the purple willow, a native 
of Europe; and the black willow, of North America. Many 
other species are represented in this collection. 
6. The Deciduous Arboretum 
This plantation extends over much of the garden area 
east of the Bronx River. The sequence of plant families 
begins at the southeast corner of the grounds and continues 
northward to the northern boundary, occupying the easterly 
ridge and the low grounds adjacent thereto. Here hardy 
trees are brought together, trees being regarded as woody 
plants which have a single main stem arising from the 
ground and not branching until some distance above it. 
The groups will be referred to in the order of their sequence. 
The first is the willow family which occupies the land 
near the south border, where a collection of willows and 
poplars may be found. Of these Simon’s poplar, from 
China, is of rapid growth and upright habit, and more 
graceful than the cottonwood or Carolina poplar; the 
American aspen, a native of northern North America, 
the wood of which is largely manufactured into pulp 
