Psorothamnus schottii is a shrub approaching two meters in maximum height.

Its highly branching stems are green to woolly gray-green and glandular.

The gland-pitted linear leaves are up to 3 centimeters long and not divided into leaflets.

Each flower has a deep purple blue pealike corolla up to a centimeter long in a glandular tubular calyx of sepals with pointed lobes.

Media related to Psorothamnus schottii at Wikimedia Commons