It is a low-lying or erect shrub with narrowly elliptic to egg-shaped leaves and orange-yellow and reddish-purple flowers arranged near the end of the branches.

Mirbelia oxyloboides is a low-lying or erect shrub that typically grows to a height of 1.5–3 m (4 ft 11 in – 9 ft 10 in), its stems covered with soft downy hairs pressed against the surface.

Flowering mostly occurs from October to January and the fruit is an oval to oblong pod 8–10 mm (0.31–0.39 in) long.

[2][3][4][5] Mirbelia oxylobioides was first formally described by botanist Ferdinand von Mueller in Fragmenta Phytographiae Australiae in 1861.

[2][3][4] In Tasmania, sandstone bushpea is only found in the Heathy Hills Nature Reserve near Elderslie and is classified as "vulnerable" under Tasmania's Threatened Species Protection Act 1995.