Baja California false cloak fern

Argyrochosma peninsularis is a fern endemic to Baja California Sur. It grows in dry, rocky places. First described as a species in 1939, it was transferred to the new genus Argyrochosma (the "false cloak ferns") in 1987, recognizing their distinctness from the "cloak ferns" (Notholaena sensu stricto). A dusting of powdery material and the presence of occasional scales on the central axis of its leaves help distinguish it from related species.