NOTES ON EUCALYPTUS. 495 
I have referred to the subject in another paper* and 
have quoted a number of species which, so faras we know, 
are homoblastic (isoblastic) throughout life. 
The ascertainment, during the last few years, that certain 
reputed homoblastic species are really heteroblastic, stimu- 
lates us tofurther enquiry in the same direction. Incident- 
ally, it may be remarked that Dr. Diels has proposed the 
word helicomorphy to include the two leaf forms in hetero- 
blastic species. 
Following the cotyledon leaves, the ordinary sequence 
of leaves is from the sessile to the petiolate, but I exhibit 
an example (HE. macrocarpa, Hook.) in which the reverse 
is the case. 
Following are notes on species already published. 
1. EUCALYPTUS PLANCHONIANA, F.v.M. 
[Previous reference, this Journal, xLvi1, 234, (1913).| 
This not very well known species is also found at Glen 
Elgin, east of Glen Innes, and particulars of this locality 
will be found at p. 66, part 24 of my “Forest Flora of New 
South Wales.”’ | 
It occurs with the Waratah (Telopea speciosissima) more 
or less over an area of one hundred square miles; i.e., from 
Boundary Creek east to Pheasant Creek, north to Moojam, 
south to Tindale, and to the west following the Dividing 
Range. 
It is known locally as Red Mahogany, because of the 
similarity of its bark to that of H. resinifera, but it has not 
a red timber like that tree; it is also known as Needle 
Bark, because it is prickly to rub down with the hand. 
* «On two new Western Australian species of Eucalyptus,’ Journ: 
Nat. Hist. and Science Soc., W.A., Vol. 111, No. 1. 
