2) Pennyroyal Plateau. The Columbia Gazetteer of North America. 2000
...Pennyroyal Plateau, Ky.'s largest physiographic region (11,500 sq mi/29,785 sq km), S central Ky. Missisippian geologic era. Hilly in E, karstic caves and sinkholes...

3) Pennyroyal. Dictionary of Phrase and Fable. 1898
...This is a real curiosity of blundering derivation. The Latin word is pul cium, the flea destroyer, from pulex, a flea, softened into pulegium, and corrupted into...

4) 10. Where Pennyroyal Grew. Jewett, Sarah Orne. 1910. The Country of the Pointed Firs
...was down and the water looked quiet a little way from shore. Among the grass grew such pennyroyal as the rest of the world could not provide. There was a fine fragrance...

5) pennyroyal. The American HeritageŽ Dictionary of the English Language: Fourth Edition. 2000.
...Eurasian mint (Mentha pulegium) having small lilac-blue flowers and ovate or nearly orbicular leaves that yield a useful, aromatic oil. 2. An aromatic plant (Hedeoma...

6) mint, in botany. The Columbia Encyclopedia, Sixth Edition. 2001
...potherbs and spices, these have a history of medicinal use in domestic remedies. Catnip, pennyroyal, hyssop, self-heal, the horehound of confectionery, and curative...

7) Mammoth Cave National Park. The Columbia Gazetteer of North America. 2000
...Cave National Park (82 sq mi/212 sq km), Edmonson, Hart, and Barren cos., S central Ky., in Pennyroyal region. Site of Mammoth Cave, one of the largest known caves...

8) essential oils. The Columbia Encyclopedia, Sixth Edition. 2001
...angelica), ginger (cardamom), heath (wintergreen), laurel (cinnamon and camphor), mint (pennyroyal, peppermint, spearmint, thyme), myrtle (clove and eucalyptus),...

9) 21. A Dunnet Shepherdess. Jewett, Sarah Orne. 1910. The Country of the Pointed Firs
...to being smeared, as to his countenance, with a most pungent and unattractive lotion of pennyroyal and other green herbs which had been hastily pounded and mixed...

10) Kentucky, state, United States. The Columbia Encyclopedia, Sixth Edition. 2001
...of the state. 3To the south and west lie the rolling plains and rocky hillsides of the Pennyroyal, a region that takes its name from a species of mint that grows...