southernwort means synonym of southernwood.
Etymology
From southern + wort.
noun
- Synonym of southernwood.“To prevent which, take Southernwort and Hellebore each a handful, bruife and boil'd 'em in two quarts of Cow's Milk; give half a pint at a time, and so wash them in Water wherein Holly has been boil'd, then let'em blood, and it will prevent the falling of the Hair, and Diseases attending it.”