Niphidium J.Sm. Niphidium J.Sm., Hist. Fil. 99. 1875 sec. Mickel & Smith 2004=Pessopteris Underw. & Maxon, Contr. U.S. Natl. Herb. 10: 485. 1908 syn. sec. Mickel & Smith 2004=Anaxetum Schott, Gen. Fil. [Schott] t.1. 1834 syn. sec. Mickel & Smith 2004