sentences:  In a treatment of Grammitidaceae in 1990, Barbara S. Parris defined "Grammitis" broadly, to include about 400 species.At that time, she stated that "The treatment of "Grammitis" here as a large and diverse genus reflects our current lack of knowledge concerning relationships within the family".Other authors at that time circumscribed "Grammitis" more narrowly, to include about 200 species.