It grows in a rosette and is distinguished from the other species in section Erythrorhiza by its many-flowered cymose inflorescences with up to 50 individual flowers.

D. erythrorhiza was first described by John Lindley in his 1839 publication A sketch of the vegetation of the Swan River Colony.

collina is named for its native hilly habitat and typically has more leaves of various shapes within the same rosette.

[2][3] Earlier, in his 1906 taxonomic monograph of the Droseraceae, Ludwig Diels introduced a new variety, D. erythrorhiza var.

In doing so, Chrtek and Slavíková elevated Marchant and Lowrie's subspecies and established the following species: Sondera collina, S. erythrorhiza, S. magna, and S. squamosa.