@MichaelMulvaney I'm not sure what to make of this so hopefully, you'll have an idea, these plants look pretty young to me they are smaller than the ones I found at Farrer ridge. I am fairly sure they haven't been planted given the plantings in this area seem to mostly be melaleuca. Could these have been self-sown and should they be transplanted??
Bit hard to tell ID from Photo = flowers and pods would be good - But you could be right. There is no reason to think that it may not be local to O'Malley, or it could have bene imported with soil or planted. If Id is correct then either leaving them in place or transplanting could be options but I would wait until they flower, so that ID can be certain