Asplenium castaneum Schltdl. & Cham. Asplenium castaneum Schltdl. & Cham., Linnaea 5: 611. 1830 sec. Mickel & Smith 2004=Asplenium rubinum Davenp., Bot. Gaz. 19: 391. 1894 syn. sec. Mickel & Smith 2004