iron fern
- kingdom: Plantae
- phylum: Tracheophyta
- class: Polypodiopsida
- order: Polypodiales
- family: Dryopteridaceae
- genus: Rumohra
- species: Rumohra adiantiformis
Villa Lugano
Buenos Aires F.D.
Argentina
Nova Petrópolis
São Leopoldo
Rio Grande do Sul
Itatiaia
Rio de Janeiro
Campos do Jordão
Diadema
Ibiúna
Itanhaém
Santos
São Paulo
Brazil
Tobosí
Cartago
Calle Blancos
Colima
San José
San Juan
San José
Costa Rica
Dubreuil
Moka
Mauritius
Göteborg
Västra Götaland
Sweden