Scott River darwinia is a densely-branched shrub which grows to a height of and a width of . Its youngest branches are greenish brown and the older ones are rough due to part of the leaf bases remained after the leaves drop. The leaves are crowded on the younger branches whilst the older ones are mostly leafless. They are linear in shape, triangular in cross-section,
glabrous and mostly , somewhat longer as they age. The flowers are arranged in heads of 20 to 40 flowers at the ends of the branches, the heads wide. The heads are surrounded by layers of
bracts, the outer ones green or greenish-red and long and shorter than the flowers. The
petal lobes are about long and wide, enclosing the
stamens,
staminodes and the lower part of the style. The style is often reddish and long with a ring of hairs near its tip. Flowering occurs from mainly in spring but also from late winter to early summer. ==Taxonomy==