Pennyroyal (American), Hedeoma pulegioides. Official in the Eighth U. S. P., as was also oil of pennyroyal. In Mexico the flowering herb is official. It is a gentle aromatic stimulant useful in flatulent colic and used in infusion. Large doses of the oil possess narcotic properties of no known therapeutic usefulness. A spirit of the oil is repellent to fleas and mosquitos, and is applied to the skin and face as the lesser of two evils - by those who consider it such. Pennyroyal has no specific influence upon the womb and ovaries, except as noted under "Helonias," q. v.