The leaves of Melissa are oval, the length of which grows on the stem is generally 5cm, the width is about 3-4cm, the branches are relatively small, the length is 1-3cm, the width is about 0.8-2cm, the apex is blunt or sharp, the base is round and then to nearly heart-shaped, the edge is serrated, near membranous or herbaceous, with longer pilose
Mint leaves are oblong lanceolate, elliptic or ovate lanceolate, rarely oblong, apex acute, base cuneiform to nearly round, margin coarse teeth serrate, relative to the former, villus shorter, not obvious.
The bracts are leaflike, but much smaller than the leaves. The calyx is bell shaped, and the Corolla is milky white.
Mint cyme axillary, spherical outline, pedicel is thin, calyx is tubular bell, corolla color is lilac, outer layer has pilose
