Gompholobium polyzygum is an erect or prostrate shrub that typically grows to a height of with its branchlets densely covered with spreading or curly hairs. Its leaves are pinnate with sixteen to twenty-one pairs of elliptic to more or less round or egg-shaped leaves with the narrower end towards the base, long and wide. The leaves are on a
petiole long, the leaflets on
petiolules long. The flowers are borne in
racemes of between five and sixteen on a
peduncle long, each flower on a
pedicel long. There are
bracts long at the base of the flowers and hairy
bracteoles long on the upper part of the pedicels. The
sepals are fused at the base forming a tube, the upper lobes long and the lower lobes long. The
standard petal is yellow-orange and long, the
wings long and the
keel orange or yellowish green and long. Flowering occurs from July to October and the fruit is a
pod long. ==Taxonomy==