It is a year old.

Erigeron annuus (L.) Pers. (Aster an-nuus L.), alias: Melaleuca) is a plant of the genus Asteraceae, mainly distributed in Jilin, Hebei, Shandong, Jiangsu, Anhui, Zhejiang, Jiangxi, Fujian, Henan, Hubei, Hunan, Sichuan and Tibet. The one-year-old stems are strong, 30~100cm high, 6mm in diameter at the base, upright, with branches on the upper part, green, the lower part is spread out with long bristles, and the upper part is covered with dense upward curved short bristles; the base leaves wither during the flowering period and become long. Round or broadly ovate, rarely nearly round; the apex is pointed or blunt, the base is narrow into a long stalk with wings, and the edges are coarsely toothed. The lower leaves are the same shape as the base leaves, but the petiole is shorter, and the middle and upper leaves are smaller. , oblong-lanceolate or lanceolate; the apex is pointed, with a short stalk or sessile, and the edges have irregular teeth or nearly entire edges; there are several or more flower heads arranged in sparse panicles. It grows on hillsides, roadsides and fields.

Chinese scientific name

Yanianpeng

Order

Platycodonales

Latin scientific name

Erigeron annuus(L.) Pers. (Aster an-nuus L.)

Also known as

Thousand-layered Tower, malaria grass, and wild wormwood

Family

Compositae