AusBonsai

Hey guys,

Just wondering what this guy is? It’s growing in my yard

One of the problems with urban Euc ID is we have no context. The tree has been planted so could be native to anywhere in Aust so it is harder to narrow down the possibilities.
Looks like it is on the nature strip which may mean planted by the council so there is a slightly stronger possibility of it being a local species but doesn't rule out any non locals either.

Based on the trunk I'd put this one in the Stringybark group.
Looks like the fibrous bark goes well up onto the smaller branches. If so that also rules out a number of possibilities.

The photo of the fruit and buds is a good ID clue but unfortunately there's no scale so I can't place these into context. Numbers of buds in a cluster is another key to species so if you can get a better idea of the range of unopened flower buds in each cluster that may help rule something in or out.
Adult leaf shape is another clue but the photo of canopy does not allow a good look at adult leaves. Even fallen leaves can be used to give an idea of the general leaf shape and vein arrangement.

The juvenile leaves on the seedling are a valuable clue but so far I can't match that with the other features shown.

A little mor info as above may help - adult leaf shape and size, fibrous bark right to the tips or changes to smooth on upper branches? Bud clusters if possible. Actual size of fruit and buds.

The nuts are tiny - like 2mm.

They are planted in Melbourne (western suburbs).

The thing is so high getting close for leaves are hard but I’d describe them as thin and narrow and elliptical with “pointy ends”.

The seed clusters seem to be in 2’s, but there’s a few of 3 and four.

The leaves seem about 8 cm.

And the bark of the trunk doesn’t bleed much sap.

The seed clusters seem to be in 2’s, but there’s a few of 3 and four.

That's confusing. In the earlier image both bud clusters seem to be 5? Numbers are obviously variable depending on weather, grazing, etc. Usually only the really large flower species have low numbers of buds.
The new fruit photos clearly show fruit valves in 3s which is another diagnostic feature for eucs and the fingers give a valuable gauge on actual size.
Euc sieberi is a possibility but a bloody big tree for urban areas and there are still some inconsistencies with a few features so not real confident with that ID. I've only gone through the South East species so far.

I'm now working through the Euc key for Vic species.
Requires leaf vein pattern so you will need a good shot of a typical leaf showing the veins.
The next feature to check is juvenile leaves - hairy or smooth. Hard to tell in the earlier photo.

It’s smooth (although I’m working with bits that have blown off the tree).

The veins.. there’s one down the middle and v shape capillaries going out from the middle.