[mass noun]a perennial plant of the daisy family, with narrow aromatic leaves that are used as a culinary herb 龙蒿,狭叶青蒿
Artemisia dracunculus, family Compositae 拉丁名Artemisia dracunculus,菊科
语源
mid 16th cent.: representing medieval Latin tragonia and tarchon, perhaps from an Arabic alteration of Greek drakōn 'dragon' (by association with drakontion 'dragon arum')