Boronia humifusa is a plant in the citrus family, Rutaceae and is endemic to the south-west of Western Australia.

Boronia humifusa is a low-growing perennial with four-angled stems that grows to a height of about 0.2 m (0.7 ft) and is mostly glabrous.

[2][3][4] Boronia humifusa was first formally described in 1998 by Paul G. Wilson and the description was published in Nuytsia from a specimen collected near the Capel to Donnybrook road.

[2][5] The specific epithet (humifusa) is a Latin word meaning "spread-out over the ground", referring to the habit of this boronia.

[2][4] Boronia humifusa is classified as "Priority One" by the Government of Western Australia Department of Parks and Wildlife[4] meaning that it is known from only one or a few locations which are potentially at risk.