Fixed. It is not listed in the 2017 ACT Plant Census. http://keyserver.lucidcentral.org:8080/euclid/data/02050e02-0108-490e-8900-0e0601070d00/media/Html/Eucalyptus_sideroxylon.htm
This tree was planted. Bearing in mind the above comments all the E. sideroxylon trees within HGW were planted by ACT City parks about 60 years ago when Hughes suburb (the first of the 'new suburbs') was first developed after all the sheep were persuaded to go home! There are only 3 "original trees" in HGW.