1. Pogostemon yechaensis is also known as "Mentha macrophylla". It is obvious from this alias that the leaves of Pogostemon fragrans are bigger than those of mint.

2. In addition to comparing the sizes of two leaves, you can also pay attention to the base of the leaf, that is, the part connected with the petiole.

3. The leaves of Pogostemon cablin are "heart-shaped" at the base, and the gap in the heart is shallow.

4. The leaf base of mint is wedge-shaped or nearly round, that is, "heart-shaped" has a big gap.

In addition, the leaves of Pogostemon cablin seem to have a shrinking feeling, while the leaves of mint are relatively flat.

6. The difference between flowers: patchouli and mint, although they are cymbals with many flowers, still have obvious differences.

7. The flowers of Pogostemon cablin grow at the "top" of the main stem or lateral branches, which is called "terminal" in botany. The flowers of Pogostemon cablin are dense and cylindrical.

8. Mint flowers grow at the junction of leaves and main stems, that is, "axillary".

9. Simply put, the flowers of Pogostemon cablin grow on the "top of the head" and the mint flowers grow on the "armpit".