Eucalyptus baiophylla is a mallee that often has sprawling lower branches, that grows to a height of and has a
lignotuber. It has rough, loose, fibrous bark on all its stems. The leaves on young plants and on
coppice regrowth are dull bluish green, linear and up to long and wide. Adult leaves are linear, long and wide and the same colour on both surfaces. The flowers are arranged in groups of five or seven in leaf
axils on a
peduncle long, individual flowers on a
pedicel long. The mature buds are oval, long and wide. The
operculum is hemispherical to conical, about the same length as the
flower cup. The flowers are white and the fruit is a cone-shaped to slightly barrel-shaped
capsule, long and wide with the valves not protruding above the rim. ==Taxonomy and naming==