Pileanthus peduncularis, commonly known as coppercups,[1] is a plant species of the family Myrtaceae endemic to Western Australia.

[2] The low and spreading shrub typically grows to a height of 1.5 metres (4.9 ft).

It blooms between August and December producing copper-orange to red flowers[2] which occur in a massed display.

The flowers are large with five-petals that occur towards the ends of the branches and from the leaf axils.

[3] The species was first formally described by the botanist Stephan Endlicher in 1838 as part of the work Stirpium Australasicarum Herbarii Hugeliani Decades Tres The only known synonym is Chamelaucium dilatatum.