Moonwort is also a fernlike plant known as honesty.

Moonworts are seedless vascular plants of the genus Botrychium, sensu stricto. They are small, with fleshy roots, and reproduce by spores shed into the air. Some species only occasionally emerge above ground and gain most of their nourishment from an association with mycorrhizal fungi.

The genus Botrychium formerly also included the genera Botrypus and Sceptridium.