Mentha cervina, also known as Hart's Pennyroyal, a member of the mint genus, is a sprawling herb growing up to .3m tall. It is very closely related to the "real" pennyroyal. It has very fragrant leaves and foliage. Its essential oils are high in pulegone, a natural abortifacient.

Resources

• http://www.pfaf.org/database/plants.php?Mentha+cervina