It is a compact shrub with many branches, simple, more or less cylindrical leaves and single white, pink or pale blue four-petalled flowers in the leaf axils.

The flowers are white, pink or pale blue and are borne singly in leaf axils on a fleshy pedicel 1–2 mm (0.04–0.08 in) long.

[2][3] This boronia was first formally described in 1904 by Ludwig Diels who gave it the name Eriostemon fabianoides and published the description in Botanische Jahrbücher für Systematik, Pflanzengeschichte und Pflanzengeographie.

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

[8] The names have subsequently been changed to reflect the change in the genus name: Subspecies fabianoides grows in eucalypt woodland between Norseman and the Esperance area but subspecies rosea grows on hillslopes, around granite rocks and undulating plains between Lake King and the Fraser Range east of Norseman.