Eucalyptus caliginosa is a tree that typically grows to a height of and forms a
lignotuber. The bark is rough, stringy, grey to reddish brown and extends to the smaller branches. The leaves on young plants and on
coppice regrowth are arranged in opposite pairs near the ends of the stems, egg-shaped to broadly lance-shaped, long and wide. Adult leaves are arranged alternately, the same or slightly different shades of glossy green on either side, lance-shaped to curved, long and wide on a
petiole long. The flower buds are arranged in groups of seven or nine on an unbranched
peduncle long, the individual buds on a
pedicel long. Mature buds are spindle-shaped to oval, long and wide with a conical
operculum. Flowering occurs between March and October and the flowers are white. The fruit are hemispherical or shortened spherical, long and wide, with the rim flat or convex, with three or four valves at the same level or slightly raised. The seeds are brown, shaped like a pyramid and long. ==Taxonomy==