(74) 



turn, we have the groundsel-bush or pencil-tree (Baccharis), 

 a native of the southeastern United States, bearing in the fall 

 a profusion of white fruit, making it a most attractive object; 

 and some of the shrubby wormwoods (Artemisia) of the Old 

 World. 



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 (Popu- 

 lus) as a collection apart, many species grown here not being 

 represented in the arboretum and fruticetum. Immediately 

 beyond the uncompleted north path at the fruticetum is a row 

 of poplars, fringing the southerly end of the north meadow, 

 consisting of several trees each of Simon's poplar, from 

 China, and Wobst's poplar, a Russian species. 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 Bash- 

 ford's willow, a native of France. Along the west bank of 

 the Bronx River may be found a row of trees of the cotton- 

 wood, or Carolina poplar, found wild in eastern North 

 America; and another 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 most of the garden area east 

 of the Bronx River. The sequence of plant families begins 

 at the southeast entrance to the grounds and continues north- 

 ward 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 



