EUCALYPTUS TREES. 9 
division of the genus or to a series of species, characterised by 
anthers developed on all stamens, consisting of two parallel cells, 
each opening by a longitudinal fissure. 
To render the exact distinctions, by which the Blue Gum-tree 
can be separated from any other species, still more clear, next a 
botanic description of the tree will be given ; such will be easily 
understood by reference to the accompanying wood-cuts (Figs. 
I. and II.), and more readily still by comparison of any fresh 
flowering and fruiting branchlets. 
Blue Gum-tree (Lucalyptus globulus)—A very tall tree, 
glabrous in all its parts, of great celerity in growth; bark whitish 
or ashy-grey outside. 
Branchlets quadrangular 
towards the summit. 
Leaves of the young plant 
almost heart-shaped, op- 
posite, nearly sessile, of a 
bluish-white hue; leaves 
of the more aged plant 
scattered, on conspicuous 
stalks, of thick consist- 
ence and vertical bearing, 
thus one of the edges 
turned upwards as in 
most Eucalypts (not like 
in most other kinds of 
trees the full surface 
turned to the zenith), 
shining and of equal 
green on both sides (not 
like in most other sorts 
of trees paler beneath), 
several inches and occa- 
sionally almost a foot 
long, nearly _ sickle- 
shaped-lanceolar, entire at the edge, rather prominently but not 
closely veined, with a marginal (or longitudinal) vein somewhat 
=1ies Ot 
