Argyi wormwood, Artemisia argyi, is a herbaceous perennial plant with a creeping rhizome. It is native to China, Japan and the far east parts of the former Soviet Union. In Japan it is known as Gaiyou and in China as Ai Ye. It is used in herbal medicine for conditions of the liver, spleen and kidney.
Argyi wormwood is an upright, greyish, herbaceous perennial about one metre tall, with short branches and a creeping rhizome. The stalked leaves are ovate, deeply divided and covered in small, oil-producing glands, pubescent above and densely white tomentose below. The lower leaves are about six centimetres long, bipinnate with wide lanceolate lobes and short teeth along the margins. The upper leaves are smaller and three-partite, and the bracteal leaves are simple, linear and lanceolate.The inflorescence is a narrow leafy panicle. The individual flowers are pale yellow, tubular, and clustered in spherical turned-down heads.