We describe and illustrate a new species, Eriosorus areniticola, and compare it with E. myriophyllus, the species to which it is most similar. This new species is endemic to southeastern and southern Brazil. It resembles a small form of E. myriophyllus, but differs by the absence of glandular hairs on rachises and laminar tissue, smaller leaf size, and distinct habitat.
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Eriosorus myriophyllus
ferns
Southeastern Brazil
southern Brazil