Gumtree, I was looking at Pakenham's book, and I wonder what you would think of his choice of Australian trees. (He tends to go for huge, ancient gnarled trunks).
The "prison boab" at Derby, which he says might or might not have been used as a prison (it has a huge hollow trunk) and the dinner tree, also near Derby (he did eat dinner under it).
The Karri, gum tree, Eucalyptus diversicolor, which he thinks is the noblest of the species: a magnificent picture of the Four Aces, their leaves turned golden by the setting sun, and their white trunks glowing. Also the 207 foot Gloucester Tree, fitted with spikes so even little old ladies like me can climb it.
A Giant Red Tingle near Walpole. "Old tingles are like trolls: brutal, ugly, magnificent creatures". This one looks to be 20 feet wide at the base, but hugely split and hollowed out by fire. It's definitely magnificent.