Mentha L.
Stamens 4. Fragrant herbs Mentha
Cymes in the axils of leaf-like bracts
Branches almost glabrous. Leaves oblong to oblong-lanceolate, not broader towards the base, 5–30 mm long. Whorls 3-flowered in leaf axils. Calyx 3–4 mm long; teeth triangular, sometimes acuminate. Corolla white or pink. Dense, rhizomatous herb with ascending to prostrate branches. Widespread. Open forests and grasslands on loams and clays. Fl. most of the year. Native Pennyroyal Mentha satureioides
Branches hairy. Leaves ovate to ovate-lanceolate, broader towards the base, 6–20 mm long. Whorls 3–8-flowered in leaf axils. Calyx 3–4 mm long; teeth lanceolate, acuminate. Corolla pale purple. Rhizomatous herb forming mats. Widespread. Open forests and grasslands, often on sandy soils. Fl. most of the year Mentha diemenica