Calea ternifolia (syn. Calea zacatechichi) is a species of flowering plant in the aster family, Asteraceae. It is native to Mexico and Central America. Its English language common names include bitter-grass, Mexican calea, and dream herb.It is used in traditional medicine and ritual in its native range.
In Mexico the plant is used as an herbal remedy for dysentery and fever. The Zoque Popoluca people call the plant tam huñi ('bitter gum') and use it to treat diarrhea and asthma, and the Mixe people ...