Ptisana is a genus in the
eusporangiate fern family
Marattiaceae, comprising species historically treated in the genus
Marattia. The establishment of this genus follows the 2008 work by Andrew G. Murdock, which supported recognition of this group on the basis of genetic analysis and morphology.
Ptisana can be distinguished from
Marattia by the presence of distinct sutures at the point of leaflet attachment, deeply cut synangia, and the absence of labiate sporangial apertures. The name
Ptisana is derived from the Latin word for
pearl barley, an allusion to the shape of the synangia.