Eucalypt identification

[MattA]

There has been suggestion that to differentiate between a Eucalypt & Angophora is by leaf arrangement. Eucalypts having alternate leaves & Angophora are opposite. In my experience many Eucalypts produce paired growth in the juvenile stages of regrowth after trauma. Eg bushfire, logging, street tree maintenance etc. Then become more alternate as the growth extends.

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Unless there has been a major renaming of varieties between the two groups, I beleive this to be a eucalypt. Note the opposite pairing of leaves. I have several others that also started off with opposite leaves then extended into alternate.

Can someone please clear this up for me.

Matt

[Ash]

G'Day Matt,
The shared ansectral state of leaf arrangment in Myrtaceae is opposite. Both Angophora, Eucalyptus and Corymbia express opposite leaves in juvenile stage and after disturbance. Some even retain that into adulthood so it is not the best clear cut character for identification between the genera. Angophora do not express the cap of the gum nut and their gumnut is not as woody as Eucalyptus. Geographically where was your tree collected? (for ID).
cheers
Ash

[Edward Scissorhand]

G'Day Matt,
The shared ansectral state of leaf arrangment in Myrtaceae is opposite. Both Angophora, Eucalyptus and Corymbia express opposite leaves in juvenile stage and after disturbance. Some even retain that into adulthood so it is not the best clear cut character for identification between the genera. Angophora do not express the cap of the gum nut and their gumnut is not as woody as Eucalyptus. Geographically where was your tree collected? (for ID).
cheers
Ash

Thanks Ash, thats really good information. I really appreciate it.

Cheers Eddie

[MattA]

Thanks for the extra info Ash. All of my euc's have been collected around Newcastle, mainly from a couple of future housing estates between Edgeworth & the freeway. I am fairly confident that the tree's are Eucalypts tho it is entirely possible that some like the one Eddie now has could be Angophora, as we do have a population of them locally.

Matt