Pomaderris angustifolia is a shrub that typically grows to a height of, its foliage covered with greyish, star-shaped hairs. The leaves are linear to narrowly oblong, mostly long and wide, with stipules long at the base but that soon fall off. The flowers are borne in clusters of two to twenty in leaf axils or on the end of branches and are cream-coloured or yellow, each flower on a pedicel long. The sepals are long, there are no petals and the style is branched. Flowering occurs from October to November.