Artemisia dubia Wall. ex Bess.

This species is easily distinguished from the closely related taxa by the leaves with many white small dots on the upper surface.

Perennial, with several, erect, 1-1.8 m tall, sulcate, purpureus, glabrescent, stout stems from woody, upright rootstock. Leaves shortly petiolate to almost sessile, oblong-elliptic to broadly ovate, 8-12 x 6-9 cm, green and white dotted above along with or without sparse T-shaped hairs, greyish-green arachnoid hairy beneath to almost glabrous, bipinnatisect, primary segments elliptic-lanceolate, 3-4.5 x 1.5-2.5 cm, acute-mucronate; secondary segments ± elliptic-lanceolate, 1-1.5 x 2.5-4.5 mm, acute or ± obtuse, revolute; uppermost leaves linear-lanceolate, with or without basal auricles. Capitula numerous, heterogamous, oblong-campanulate, 3-3.5 x c. 2 mm, ± approximate, almost sessile, in a narrow to broad, 15-30 x 10-20 cm panicle with ascending to ± patent (upper), up to 25 x 2-3 cm primary branches. Involucre 4-seriate, phyllaries laxly imbricate, all sparsely arachnoid hairy outside, outermost narrowly ovate, c. 1.25 x 0.75 mm, green, acute, hairy; median elliptic to narrowly obovate, c. 2.25-3 x 1.25 mm, narrowly scarious on margins with purplish tinge; innermost narrowly obovate, c. 2.5 x 1 mm, obtuse, widely scarious hyaline on margins and apex. Receptacle ± flat, glabrous. Florets 16-20, purplish, all fertile; marginal florets 6-8, with c. 1 mm long, basally broadened, bidentate, glandulose corolla tube and long exserted style branches; disc-florets 10-12, with c. 1.75 mm long, 5-toothed, glandulose, apically very sparsely hairy corolla tube. Cypselas brown, c. 1.25-1.5 mm long, with terminal corolliform scar.

Himalaya, China, Korea, Japan.

Distribution: Pakistan, Northern India, China, Xizang and Nepal.

1200-3400 m

Fl. Per.: August-October.

A. vulgaris non L.: C. B. Clarke in Hook. f., Fl. Brit. Ind. 3: 325. 1882 pro parte; A. subdigitata Mattf. in Fedde, Rep. Sp. Nov. 22: 243. 1926 pro parte.

Artemisia dubia là một loài thực vật có hoa trong họ Cúc. Loài này được Wall. mô tả khoa học đầu tiên.

牛尾蒿（学名：Artemisia dubia）是菊科蒿属的植物。分布在尼泊尔、印度、不丹以及中国大陆的内蒙古、西藏、四川、云南、甘肃等地，生长于海拔3,500米的地区，多生在疏林下、草原、干山坡和林缘，目前尚未由人工引种栽培。