What is "artemisia vulgaris"

Mugwort \Mug"wort`\, n. [AS. mucgwyrt. Cf. Midge.] (Bot.) A somewhat aromatic composite weed ( Artemisia vulgaris), at one time used medicinally; -- called also motherwort.

Artemisia vulgaris (mugwort or common wormwood) is one of several species in the genus Artemisia commonly known as mugwort, although Artemisia vulgaris is the species most often called mugwort. This species is also occasionally known as felon herb, chrysanthemum weed, wild wormwood, old Uncle Henry, sailor's tobacco, naughty man, old man or St. John's plant (not to be confused with St John's wort). Mugworts have been used medicinally and as culinary herbs.