Definition

Noun 1. A North American aromatic herb: "American pennyroyal" refers to an erect, hairy, branching herb native to America. It is characterized by its purple-blue flowers and its leaves, which yield a pungent essential oil.

Usage

• The term "American pennyroyal" is used specifically to identify this plant species () and distinguish it from the European pennyroyal (). It is primarily used in botanical, horticultural, and historical folk medicine contexts.
• Example:

Advanced Usage

• The plant is sometimes referred to simply as "pennyroyal" in North American contexts, but specifying "American pennyroyal" avoids confusion with its European counterpart.
• In historical or folk practice contexts, it may be mentioned for its traditional uses.
  • Example: In some folk traditions, a tea made from American pennyroyal was used for digestive complaints.

Variants and Related Words

• Pennyroyal: A more general term that can refer to either the American () or European () species of this aromatic mint-family herb.
• Mock pennyroyal: Another common name for the same plant, .
• Squaw mint: An outdated and culturally insensitive historical name for the plant.

Important Note on Usage

• CRITICAL WARNING: The essential oil of American pennyroyal is highly toxic and can cause severe liver damage, kidney failure, and death if ingested. It is not safe for medicinal use. Its historical use in folk medicine is noted for context only and must not be replicated. Its safe and primary modern use is as a cultivated plant and as a source of insect-repelling oil for external application only, with great caution.

Noun

1. erect hairy branching American herb having purple-blue flowers; yields an essential oil used as an insect repellent and sometimes in folk medicine