The word monnieri (uncapitalized) is a specific epithet for animal and plant species meaning "of Monnier" or "of Le Monnier", and was used to commemorate one of several people having these surnames. Some species with the epithet are:
In botany Bacopa monnieri - water hyssop Cnidium monnieri - Monnier's snowparsley Stachys monieri - alpine betony
In zoology Enigmaticolus monnieri - a sea snail