Young plants and coppice regrowth have leaves in opposite pairs joined at their bases, each half-leaf egg-shaped to round, 17–55 mm (0.67–2.17 in) long and wide.

The flower buds are arranged in leaf axils in groups of nine, eleven or thirteen on a flattened, unbranched peduncle 3–20 mm (0.12–0.79 in) long, the individual buds sessile or on pedicels up to 2 mm (0.079 in) long.

[5][6] The specific epithet (uncinata) is from the Latin word uncinatus meaning "barbed" or "hooked", referring to the fine tip of the leaves.

[3] Hook-leaved mallee is found on coastal and sub-coastal sand plains and low hills between York, the Stirling Range, Salmon Gums and Israelite Bay, growing mostly in open shrubland.

[7] This eucalypt is classified as "not threatened" by the Western Australian Government Department of Parks and Wildlife.