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pennyroyal

pennyroyal name for two similar plants of the family Labiatae ( mint family), usually distinguished as true, or European, pennyroyal ( Mentha pulegium ) and American, or mock, pennyroyal ( Hedeoma pulegioides ). Both have small bluish or purplish flowers in the leaf axils. The European pennyroyal is perennial and prostrate; the American is annual with numerous erect branches. Both contain a pungent oil said to be repellent to insects, especially fleas. The oil, obtained chiefly from the American pennyroyal, is used medicinally. Pennyroyal tea was an old domestic remedy. Other species of Hedeoma are sometimes called pennyroyal, but the false and bastard pennyroyals are different plants. Pennyroyals are classified in the division Magnoliophyta , class Magnoliopsida, order Lamiales, family Labiatae.

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"pennyroyal." The Columbia Encyclopedia, Sixth Edition. 2008. Encyclopedia.com. 9 Jul. 2009 <http://www.encyclopedia.com>.

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pennyroyal

The Concise Oxford Dictionary of English Etymology | 1996 | | Â© The Concise Oxford Dictionary of English Etymology 1996, originally published by Oxford University Press 1996. (Hide copyright information) Copyright

pennyroyal species of mint. XVI (pen(n)eryall, peny-). alt. of puliol(e) reall (ryall) XV — AN. puliol real, i.e. OF. puliol (mod. pouliot :- Rom. *pūlegeōlum, f. L. pūle(g)ium thyme) and real ROYAL.

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T. F. HOAD. "pennyroyal." The Concise Oxford Dictionary of English Etymology. 1996. Encyclopedia.com. 9 Jul. 2009 <http://www.encyclopedia.com>.

T. F. HOAD. "pennyroyal." The Concise Oxford Dictionary of English Etymology. 1996. Encyclopedia.com. (July 9, 2009). http://www.encyclopedia.com/doc/1O27-pennyroyal.html

T. F. HOAD. "pennyroyal." The Concise Oxford Dictionary of English Etymology. 1996. Retrieved July 09, 2009 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O27-pennyroyal.html

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pennyroyal

The Oxford Pocket Dictionary of Current English | 2009 | © The Oxford Pocket Dictionary of Current English 2009, originally published by Oxford University Press 2009. (Hide copyright information) Copyright

pen·ny·roy·al / ˈpenēˌroiəl/ • n. either of two small-leaved plants of the mint family, used in herbal medicine: a creeping Eurasian plant (Mentha pulegium), and American pennyroyal (Hedeoma pulegioides).

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