It is a shrub with pinnate leaves and small white or creamy green flowers with four petals and eight stamens and occurs from the Stirling Range to Mount Ragged.

Cyanothamnus inconspicuus is an erect, spreading or rounded, compact shrub that grows to a height of 1 m (3 ft) with its branches hairless or with a few soft hairs.

[2][3] This species was first formally described in 1863 by George Bentham who gave it the name Boronia inconspicua in Flora Australiensis from a specimen collected by James Drummond.

[4][5] In a 2013 paper in the journal Taxon, Marco Duretto and others changed the name to Cyanothamnus inconspicuus on the basis of cladistic analysis.

[7] This boronia usually grows on rocky outcrops and is found from the Stirling Range to Mount Ragged in the Esperance Plains and Mallee biogeographic regions.