On Fri, 21 Aug 2015 07:33:09 -0700 (PDT)
Sonny wrote:

peeling off, so it looks more smooth. It seems several (many?0 of
the Australian/Tamanian trees have barks that change, shed, to some
extent, with the change of the seasons, also.

i think manzanita trees also regenerate the bark over time

Also, the sapling, he plants, appears to have (somewhat thick) waxy
leaves, smooth edges, elongated(?).

thought that was a gum tree
i think like what we call a eucalyptus in usa

Blackwood is easily worked, very stable and long lasting, and

i thought that blackwood was very hard
does that fit into the characterisitic of being easily worked

I didn't find any references to/for the use of the bark, but my
search was limited.

i imagine those big sheets he stored would make great shingles
not certain but just a guess
would work great for a lean-to
or maybe a natural insulation