St John's wort, Hypericum perforatum, is a flowering plant in the family Hypericaceae. Saint John's wort or variants may also refer to: Hypericum, the genus of plants Hypericum pulchrum, slender Saint-John's-wort See also Otogirisō, lit. St John's wort, a 1992 sound novel video game Otogirisō (film) a 2001 film based on the game