Ribbed false pennyroyal (Hedeoma costata)
Same genus
- Slender false pennyroyal (Hedeoma acinoides)
- McKittrick's false pennyroyal (Hedeoma apiculata)
- Dentate false pennyroyal (Hedeoma dentata)
- Spreading false pennyroyal (Hedeoma diffusa)
- Drummond's false pennyroyal (Hedeoma drummondii)
- Rough false pennyroyal (Hedeoma hispida)
- Aromatic false pennyroyal (Hedeoma hyssopifolia)
- Softhair false pennyroyal (Hedeoma mollis)