Daviesia triflora is a rush-like shrub that typically grows to a height of up to and has many stems, its phyllodes reduced to small scales. The flowers are usually arranged in a cluster of three in leaf axils on a peduncle about long, the about rachis long, each flower on a pedicel long. The sepals are long and joined to form a bell-shaped base with five lobes. The upper two lobes are joined for most of their length and the lower three are about long. The standard petal is broadly egg-shaped, long and wide, and yellow or yellow-orange and dark red. The wings are long and dark red, the keel long and dark red. Flowering occurs from May to September and the fruit is a flattened triangular pod long.
