Eucalyptus chapmaniana is a tree that typically grows to a height of and forms a
lignotuber. The bark on most of the trunk is rough, fibrous and finely and grey or brown-grey and on the branches is smooth, light brown to pale grey, with long ribbons of shed bark. Young plants and
copice regrowth have
sessile egg-shaped to almost round leaves long and wide arranged in opposite pairs. Adult leaves are arranged alternately, lance-shaped to curved, long and wide on a
petiole long. The flower buds are arranged in groups of three in leaf
axils on an unbranched
peduncle long, the individual buds on a
pedicel long. Mature buds are club-shaped to diamond-shaped, long and wide with a conical to beaked
operculum. Flowering occurs from January to March and the flowers are white. The fruit is a woody, conical or bell-shaped
capsule long and wide. ==Taxonomy==