Plants · La Saladita, Guerrero

silver fern

Pityrogramma calomelanos

Spanish: Helecho plateado

silver fern (Pityrogramma calomelanos)
Photographed by vctrndr on iNaturalist

Pityrogramma calomelanos, commonly known as the Silver fern, is a rhizomatous geophyte or lithophyte native to Mexico and Tropical America. It grows mainly in subtropical regions and has been introduced widely across Asia, Africa, and Pacific islands. Most often recorded in Nov.

TaxonomyPolypodiopsida › Polypodiales › Pteridaceae
Local records1 research-grade observation within about 50 km of La Saladita (the survey box also takes in Zihuatanejo, Ixtapa and Troncones)
Global records3,308 on iNaturalist
Recorded here2021 – 2021
Months recorded near La Saladita
JanFebMarAprMayJunJulAugSepOctNovDec
Recent local sightings

Interactive card with more photos, sounds and similar species Plants guide iNaturalist Wikipedia

Cite as: “silver fern (Pityrogramma calomelanos) at La Saladita”, La Saladita Field Guide, lasaladita.com/species/pityrogramma-calomelanos/, updated 2026-09-26. Observation counts and months come from iNaturalist research-grade records within about 50 km of 17.8375°N, 101.7606°W (the survey box also takes in Zihuatanejo, Ixtapa and Troncones); summary text from Wikipedia where present.