Psilotum (whisk fern) is a genus of fern-like vascular plants, one of two genera in the family Psilotaceae, order Psilotales, and class Psilotopsida (the other being Tmesipteris). The name of the genus is from Greek psilos = bare, referring to the lack of the usual plant organs, such as leaves.

Psilotum (whisk fern) is a genus of fern-like vascular plants, one of two genera in the family Psilotaceae, order Psilotales, and class Psilotopsida (the other being Tmesipteris). The name of the genus is from Greek psilos = bare, referring to the lack of the usual plant organs, such as leaves.