Pultenaea rodwayi is an erect shrub that typically grows to a height of and has hairy branchlets. The leaves are linear with a groove along the upper surface, long and wide with stipules long at the base. The flowers are long and arranged in dense clusters on the ends of branches with hairy, three-lobed bracts long at the base. Each flower is on a pedicel and there are hairy, linear bracteoles long at the base of the sepaltube, the sepals long. The standard petal is yellow to orange with a red base and long, the standard yellow to orange and long, the wings yellow to orange and long and the keel yellow to red and long. Flowering occurs from October to November and the fruit is a flattened pod long.