Lechenaultia biloba, commonly known as blue leschenaultia,[2] is a species of flowering plant in the family Goodeniaceae and is endemic to the south-west of Western Australia.

[5][6] No type specimen was originally recorded, but David Morrison in his 1987 paper on the genus selected a lectotype that was collected in 1839 by James Drummond in the Swan River Colony.

[3] Augustin Pyramus de Candolle described L. grandiflora from a collection from the Vasse River, which was synonymised with L. biloba by George Bentham and subsequent authors.

[3] Lechenaultia biloba is found across a wide swathe of Western Australia, from the Geraldton sandplains south through to the southwestern corner of the state and east to Esperance.

It grows best in well-ventilated locations with very good drainage, otherwise it is prone to fungal disease, in particular grey mould (Botrytis cinerea) of the branches and soil-borne Phytophthora and Pythium, and is often short-lived,[4] lasting four to six years in a good location, or perishing within a year in a poor one.