This pops up a bit. A suggestion by Mr A. Percival former Commonwealth Surveyor General that Canberra may have been named after a tree. Strangely this proposition has been alluded to before in another article were it is suggested that an old pioneer canned the local berries and carted them off to market at nearby Queanbeyan hence 'Canberry'.
All great stuff but of course there are no wild native cranberries in Canberra and the only edible red berry I can think of would be the Ngambri's Native Cherry (Exocarpos cupressiformis). Being a surveyor Percival continues on with tales of the first surveys of Canberra early in the 20th century.
The Canberra Times - 4 June 1954
National Library of Australia