Homoranthus papillatus, commonly known as mouse bush,[2] is a flowering plant in the family Myrtaceae and is endemic to a small area in southern Queensland.

It is a compact shrub with curved, linear leaves and pale yellow flowers arranged in upper leaf axils.

The leaves are arranged opposite on a short petiole, linear, curved, about 10 mm (0.39 in) long with dense warty protuberances on the surface.

[2][3][4] Homoranthus papillatus was first formally described in 1981 by Norman Byrnes from a specimen collected in Girraween National Park in 1976 and the description was published in Austrobaileya.

[7] Mouse bush is endemic to Mount Norman in Girraween National Park, Queensland where it grows in heath on skeletal sandy soils among crevices of granite outcrops.