Lack of bark says it is a gum. Doesn't appear to have compressions (wrinkly armpits) below junction of limbs with trunk so that rules out E. Rossi. Of the remaining gums. leaves look least like those of snow gums and most like those of Blakley's Red Gum but it may also be a brittle gum
Can we have some information at least on the general area of this sighting, and assurance that it's a contemporary one? I'm undertaking a Gula habitat study for the Conservation Council ACT Region, in collaboration with the ANU and ACT Govt. If this is a fresh ACT sighting, has Govt been notified?