Eucalyptus scias is a straggly tree but one that sometimes grows to a height of , and forms a
lignotuber. It has fibrous grey or brown bark in long slabs with shallow longitudinal furrows. Young plants and
coppice regrowth have dull green leaves that are paler on the lower surface, broadly lance-shaped, long and wide. Adult leaves are glossy green but paler on the lower surface, lance-shaped to broadly lance-shaped or curved, long and wide, tapering to a
petiole long. The flower buds are arranged in leaf
axils in groups of three or seven on an unbranched
peduncle long, the individual buds
sessile or on
pedicels up to long. Mature buds are oval to spindle-shaped or diamond-shaped, long and wide with a conical to beaked
operculum. Flowering has been recorded from January to February and the flowers are white. The fruit is a woody cup-shaped, conical or bell-shaped
capsule long and wide with two ribs on the sides and the valves protruding prominently. ==Taxonomy and naming==