100 
The Queensland Naturalist April, 1936. 
forms a compact tree, but like many of this family, suckers 
freely and is apt to become a nuisance. Populus deltoides , 
the Southern or Carolina Cotton Wood, as it is called in 
America, is a good tree; it has a deliquescent habit, that 
is, the top breaking into numerous large branches of equal 
importance, with the centre somewhat open. The Golden 
Poplar has so far not done well, Mr. Bruce is quite dis- 
appointed with it. In the Melbourne Botanic Gardens 
there are some magnificent specimens of Golden Poplar. 
Platmms orientalis. the Plane Tree, thrives well and some 
fine specimens are to be seen. 
Passing on to the Quercus or Oak family, many species 
are grown, most of which have attractive foliage. Some 
beautiful very large English Oak, Quercus robur , are 
growing in the old garden at Duntroon, the species most 
featured in Canberra is Quercus palustris , the American 
Pin Oak, the leaves deeply lobed and turn a bright red 
in Autumn. Some lines of this beautiful oak seen planted 
on roadsides in centre of well-kept turf plots must pro- 
vide a wonderful effect in Autumn, the new growth in 
Spring must also be Very fine. Other oaks noticed were 1 
Quercus ambigua , and a form of it var rubra, both of 
which are making good growth, they also have dark red 
foliage in Autumn. Quercus paniculata is another to be 
seen, a fine shapely tree, apparently of rapid growth. 
Quercus macrocarpa, the Mossy Cup Oak, in reference to 
peculiar shape of Acorn cup, is also being grown, it is 
large in growth, forming fine trees. Many other species, 
including the live or evergreen oaks such as Q. ilex and 
Q. virens are planted. 
Several species of Ulmus or Elm are grown, Ulmus 
americana, the American White Elm. has rather a wide 
spreading habit that makes it a useful shade tree, it is 
quick in growth and good for avenue planting ; the variety 
pendula , a drooping form with Weeping Willow-like habit, 
is often grafted on a strong stem of the type form, and 
used as a specimen plant on lawns, the variety aurea, the 
golden form, provides a fine effect with its golden tipped 
foliage. Mr. Bruce is very keen on Ulmus parvif olia, the 
Chinese Elm, being sometimes known as Ulmus chinensis, 
it is semi-evergreen with small foliage and drooping habit. 
Ulmus vegeta - , a form of Ulmus hollandica , also known as 
the Dutch and Belgian Elm, is a fine tree of rapid growth, 
there are a number of forms that are supposed to be 
natural hybrids; Ulmus compestris , the English Elm, is a 
tall growing tree with ascending and spreading branches 
that form a fine head ; unfortunately this species has the 
bad habit of suckering freely. Most of the Elms are 
