Agonis flexuosa, commonly known as peppermint,[2] is a species of flowering plant in the family Myrtaceae and is endemic to the southwest of Western Australia.

Agonis flexuosa is usually a tree that typically grows to a height of 10 m (33 ft), sometimes a wind-swept mallee or almost prostrate shrub.

[2][5][6] This species was first formally described in 1809 by Carl Ludwig Willdenow who gave it the name Metrosideros flexuosa in his Enumeratio Plantarum Horti Regii Botanici Berolinensis.

latifolia mainly grows in sandy soil in heath, shrubland or woodland between Walpole and Cheyne Beach in the Esperance Plains, Jarrah Forest and Warren bioregions, with a record from the Stirling Range.

[5] The Noongar peoples used the plant leaves as an antiseptic; sapling trunks were used as spear shafts and digging sticks.