1、 Blade difference

The leaves of Artemisia annua are paper, green on the top, with dense white gland spots and small pits. They are pilose at the initial stage and fall off to be hairless at the later stage. The leaves of the basal leaves and the lower part of the stem are broadly ovate or nearly circular, with two pinnatifid or the first total fissure, the second deep fissure, the middle leaves are ovate, nearly circular or oblong, and two pinnatifid or the second deep fissure

The leaves of wormwood are thick paper, hairy on both sides, and the basal leaves have long stalks, which wither at the flowering stage. The leaves at the lower part of the stem are nearly round or broadly ovate, pinnately deeply divided, and the middle leaves are ovate, triangular ovate or subrhombic, with one round of pinnately deeply divided to half divided

2、 The difference between flowers

Artemisia annua is a head like inflorescence, oval or oblong. The corolla of female flowers is narrow tube, and the color is purplish red. The corolla of bisexual flowers is tube, and the eaves are purplish red

Wormwood is also a head, with oval inflorescences. The corolla of female flowers is narrow tubular and purple in color. The corolla of bisexual flowers is tubular or goblet shaped, and the eaves are purple