1、 Blade difference

The leaves of Elsholtzia chinensis are elliptic lanceolate or oval, about - 3-9 cm long and 1-4 cm wide. The apex is acuminate, the base is wedge-shaped, extending into wings, the edge is serrated, the upper part is green, there are small hard hairs, the lower part is light green, the main vein has small hard hairs, and there are gland spots in other places

The leaves of patchouli are heart-shaped ovate and then oblong lanceolate, which are wider than the former, about 4.5-11 cm long and 3-6.5 cm wide. The apex is caudate, long and acuminate, and the base is heart-shaped. The upper part is olive green and glabrous, and the lower part is slightly light, with pilose and glandular spots

2、 The difference between flowers

Elsholtzia is a spike, about 2-7 cm long and 1.3 cm wide. The bracts are wide oval or oblate, the calyx is bell shaped, and the color of the Corolla is lavender

Huoxiang is a cymose inflorescence, which will form a cylindrical spike on the main stem or side branches, about 2.5-12 cm long, the bracts are lanceolate, the calyx is tubular inverted conical, and the color of the Corolla is light blue purple