Seringia undulata, commonly known as wavy-leaf fire-bush,[2] is a species of flowering plant in the mallow family and is endemic to a small area of inland Western Australia.

It is a suckering, upright shrub with hairy, rust-coloured young stems, oblong, wavy leaves and purple flowers arranged in groups of 6 to 8.

Petals are absent and the stamens have yellow filaments, and dark coloured anthers.

[2][3] Seringia undulata was first formally described by Carolyn F. Wilkins in the journal Australian Systematic Botany from specimens collected in the Bremer Range in 2003.

[2][3] Seringia undulata is listed as "Priority One" by the Western Australian Government Department of Biodiversity, Conservation and Attractions,[2] meaning that it is known from only one or a few locations which are potentially at risk.