1、 Plant difference

The round leaf Mint has an upright stem, about 30 to 80 cm high, blunt quadrangular, with stripes on the stem

The stem of peppermint is upright, about 30 to 60 cm high. The stem is sharp quadrangular and has four grooves

2、 Leaf difference

The leaves of round leaf peppermint are usually sessile, round, oval or oblong oval, with a length of 2 to 4.5 cm and a width of 1.5 to 3 cm. The apex is blunt, the leaf base is heart-shaped, the edge has round teeth or round toothed serrations, the leaves are paper, and the leaves are green above and light green below, with pilose hair

Mint leaves are long, round, lanceolate, lanceolate, oval, lanceolate or oval, about 3 to 5 cm long and about 0.8 to 3 cm wide. The front end is sharp, the leaf base is wedge-shaped or nearly round, the leaf edge is toothed serrated, and the leaf color is green

3、 Flower difference

Round leaf peppermint cymes gather into cylindrical spikes at the top of stems and branches. The inflorescences are 2 to 4 cm long and about 6 mm in diameter. The Corolla is white, light blue, purple or light purple

Peppermint cymose, inflorescence nearly spherical in outline, about 18 mm in diameter. Flowers are usually white