THE AUSTRALIAN NATURALIST. 15 
Around Hornsby you. find what is known as the typical with 
broad suckers and also a narrow leaved form with very narrow 
Suen and leaves. 
E. pilularis, our most gsi) and consequently most ery 
foaees tree, is,to be seen in St. Leonards Park as a 
stringy bark. It is also found in Kuringai Chase on the tops 
of the ridges with stringy bark, whilst in the gullies it has the 
“blackbutt” and clean bole saith gave it its name, the stringy 
bark ‘evidently being an adaption against the weather or bush 
fires. 
EH. sieberiana is another tree which is to be found in poor 
soil adopting the gregarious habit. It frequently throws a 
dozen or more lone tough poles from a base—poles which sup- 
ply most of the Soren props hawked around the suburbs. .I 
have searched for a stump in several of these clumps thinking 
that maybe a tree had been cut down and the suckers resulted 
therefrom, but this is not so, and it grows in rough stony flats, 
and I have found it both in flower and fruit. 
E. squamosa, found from the Hawkesbury up to Kuringai, 
I mention for the reason that. it appears’ to be in bud all the 
year round. I got it in flower, ise., to say a few trees had a 
few flowers on, in October last year, but this year there was no 
sign of the buds opening. I am inclined to the opinion that it 
probably flowers every second year, but this has to be deter- 
mined, and I shall be glad of any notes: by any of the mem- 
bers on this particular species. The trouble is, one: cannot live 
under the trees. 
It is very interesting to note the peculiar habits of the 
trees—H. wmbra for instance being found alongside the water 
at the Hawkesbury, and only on the ridges that are under the 
direct influence of the sea breezes. It ascends as far as Cowan 
Stations and ends abruptly, only to be found again on the 
heights overlooking Manly. 
E. eximia appears to confine itself to the ridges atria the 
‘Hawkesbury along Berowra Creek proper, and it extends only 
to the Galston Road, about 3 miles from Hornsby. 
i. virgata is to be found only on the south east side of the 
hills rarely going beyond a couple of hundred feet down the 
side. It is a most conservative plant, and so not often met 
with. 
EH. capitellata like robusta appears to prefer the sea, and 
does not extend beyond the influence of the sea air. 
The ironbarks are only to be found in the shale, conse- 
quently are not often met with, 
