What is "arthropteris"

Arthropteris is a small genus of ferns in family Tectariaceae, native to Australia, Europe, Asia and Africa, and previously placed in the families Oleandraceae or Davalliaceae. Around 12 to 21 species are considered part of this genus. The name Arthropteris is from the Greek, meaning "jointed fern", referring to the joint at the base of the petiole.