Argyrochosma flava

Argyrochosma flavens is a South American fern. It has leathery, thrice-divided leaves with dark brown axes; the leaves are coated with yellow powder below. First described as a species in 1806, it was transferred to the genus Argyrochosma in 1996. Until recently, it has usually been treated as a variety of Argyrochosma nivea under the names A. nivea var. flava or Notholaena nivea var. flava. It is found along the Andes from Colombia south to Argentina, typically growing in rocky settings in high valleys. A. flavens has been used as an herbal medicine within its native range, where it is sometimes called "doradilla". Its striking colors made it appealing to horticulturists, and it has been cultivated in Europe since the 1850s.