Pteronia incana ("Asbos" or "ash-bush") is a species of flowering plant in the family Asteraceae, indigenous to the Karoo regions of South Africa.

This species has small, light grey, woolly, fragrant leaves, and forms a low, dense bush.

They are solitary, yellow, 15mm wide, with non-sticky yellow-green bracts, and small of coconut.

Pteronia glauca ("Boegoekaroo") is a very similar species, which also has light grey leaves.

Its natural habitat is renosterveld vegetation, growing in deep, silty (often clay-rich) soils that are usually derived from shales.