Prostanthera incisa, or cut-leaf mintbush, is a shrubby plant native to rocky mountain tops of Eastern Australia. It has an attractive purple flower. The leaves are highly aromatic, ovate-lanceolate, 1–3 cm long, and teethed. Robert Brown described the species in his 1810 work Prodromus Florae Novae Hollandiae et Insulae Van Diemen, and it still bears its original name. There are two recognized varieties: \n* P. incisa var. incisa \n* P. incisa var. pubescens