520 PROCEEDINGS OF SECTION D. 
Gippsland, within which there are but few spots where Hucalyptus 
pulverulenta might be able to find a habitat. But at Bunyip the 
country again changes to comparatively poor sandy and clayey 
soil flanking the mountains which end in the Dandenong Ranges. 
On these lands is found as part of an open forest Hucalyptus 
Stuartiana, locally known as “apple-tree,” and of which Baron 
v. Mueller remarks that there is every reason to assume that the 
variety of Hucalyptus pulverulenta with elongated leaves is merely 
a state meditating a transit to Hucalyptus pulverulenta. 
In tracing out Lucalyptus pulverulenta in its lanceolate variety 
through Gippsland I was struck by some points in which as to the 
foliage, this tree, as at Moe, resembled Lucalyptus Stwartiana. 
Again, in tracing out this latter from Bunyip to near Lilydale I 
was struck, not only by the differences which distinguish it from, 
but also by the many characters which it has in common with, 
Eucalyptus pulverulenta in its lanceolate variety. 
The young form of Hucalyptus pulverulenta of Victoria nearly 
resembles the mature form of the New South Wales species. Baron 
von Mueller says that it is distinguishable from Hucalyptus 
Stuartiana only in its foliage; and to this I would add that it is 
only in its young state that the pulverulent character is equally 
apparent in the latter as in the former. 
In this connection I may say that I am fully in accord with 
Mr. J. H. Maiden when he says, at p. 523 of the ‘‘ Useful Native 
Plants of Australia,” that it is a question whether they ought not 
to be united. 
The sessile, comparatively short and wide leaves of the type in its 
mature state, the elongated, although sometimes still sessile, com- 
paratively narrow leaves of the lanceolate variety, and the similar 
leaves but with attenuated base, and comparatively long petioles 
of Lucalyptus Stwartiana, indicate the direction and degree of the 
changes which have taken place. 
The following may serve as a rough approximation of the . 
lengthening of the leaf, and the development of a leaf stalk, com- 
mencing with the typical Lucalyptus pulverulenta and ending 
with Hucalyptus Stuartiana. The measurements were made in 
inches, disregarding small fractions, and those leaves were chosen 
which appeared to represent the larger size in each case of the 
mature foliage :— 
Marnlany INESaWissseseenereirce 2: Monkey Creek, Vice....... 6° 
Ovens/district) Vicherecessce On Miog;, ‘Vile Acncscessetasignrs 6° 
Buchan ae Pee 5: Bunyipiggin Msetedecoane soe t'* 
Darlimurla A le! Teaeearete 6° Croydon y..50 sswateranen dean ae 
In order to see whether any generally distinctive character 
might become evident by a comparison of the length and breadth 
of leaves and the length of the leaf-stalk, I measured a number of 
