Metaxya rostrata is a species of fern in the family Metaxyaceae. It is native to northern Brazil, Colombia, Peru, and Venezuela. It can be found in all five natural regions of Colombia.Catálogo de Plantas y Líquenes de Colombia Metaxya rostrata (Kunth) C.Presl. It is characterized by its large fronds that are 1–2 m long.
The species was first described as Aspidium rostratum by Carl Sigismund Kunth in 1816. In 1836 Carl Borivoj Presl placed the species in genus Metaxya as M. rostrata.
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