Eucalyptus × conjuncta is a tree with rough, stringy bark on the trunk to the smallest branches. Young plants have leaves that are lance-shaped with finely scalloped edges, up to long and wide. Adult leaves are the same bright, glossy green on both sides, lance-shaped, long and wide on a
petiole long. The flower buds are borne in groups of eleven or more on a thin, unbranched
peduncle long, the individual buds on a thin
pedicel long. Mature buds are oval to spindle-shaped, long and wide with a conical
operculum about as long and wide as the
floral cup. The flowers are white and the fruit is a woody cup-shaped to hemispherical
capsule long and wide with the valves level with the rim or extending beyond it. ==Taxonomy and naming==