Perth’s biggest paperbark grows up to 15 m tall and develops a thick trunk and thick tortuous branches. It grows in the Darling Range and on the coastal plain, mainly in moist depressions. When found with freshwater paperbark, stout paperbark grows further back from the water. It’s flowers, produced in summer, are scattered amongst leaves along the stems.
Ref: “Leaf and branch: trees and tall shrubs of Perth” by Robert Powell. Published by the Western Australian Department of Environment and Conservation, 2009.