Name: Asplenium dielfalcatum Viane
Synonyms: Diellia falcata; Lindsaea falcata; Schizoloma falcatum.
Etymology: The genus name Asplenium derives from the Greek word for "spleen" and was traditionally associated with the use of certain species in medicine. The epithet dielfalcatum refers to the former genus Diellia and the sickle-shaped leaf form.
First description: The currently accepted combination Asplenium dielfalcatum was published in 1991 by Ronald L.L. Viane; the underlying taxon was described in 1854 as Diellia falcata.
Origin / Habitat: Endemic to Oʻahu, Hawaii, in moist montane forests and shaded, humid locations. The species grows as a fern with a creeping rhizome.
Description & Care: Fern with narrow, leathery fronds and characteristically sickle-shaped curved tips. We cultivate it in shaded to bright indirect light, with high humidity and consistent moisture, without waterlogging. We keep it at around 18–26 °C and avoid dry, hot locations.