1. Eurasian perennial mint have small lilac-blue flowers and ovate leaves
   "The pennyroyal formed a dense ground cover in the damp areas";
   - Mentha pulegium
    
2. Erect hairy branching American herb having purple-blue flowers
   "American pennyroyal dotted the meadow with its tiny purple blooms";
   - American pennyroyal, Hedeoma pulegioides

Derived forms: pennyroyals

Type of: herb, herbaceous plant, mint

Part of: genus Hedeoma, Hedeoma

Encyclopedia: Pennyroyal, Victoria