Limestone marlock resembles Tuart with its grey bark and low dividing trunk. However it is much smaller at 10-15 m and is often a mallee (multiple stems from the ground). It grows on coastal limestone as its common name suggests, but on other soils as well. Its other common name, “redheart”, refers to it’s reddish wood. Juvenile leaves are heart-shaped. Flowers are most plentiful in spring.
Ref:
“Leaf and branch: trees and tall shrubs of Perth” by Robert Powell. Published by the Western Australian Department of Environment and Conservation, 2009.
“The special eucalypts of Perth and the South-West” by Malcolm E. French and Dean Nicolle. F & N Publications.