St. John's What?

摘要

When you squeeze the bright star-shaped yellow buds of the hardy perennial Hyper- icum perfora- turn, they yield a red juice that reminded medieval Europeans of the blood of John the Baptist. Valued for its magical healing powers, St. John's wort (a Middle English word for "plant"), as the shrub is commonly called, has been used since the time of ancient Greece for treating any number of ailments, from liver and bowel disorders to hysteria, obesity and insomnia.