| Pityrogramma calomelanos | |
|---|---|
| | |
| Scientific classification | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Division: | Polypodiophyta |
| Class: | Polypodiopsida |
| Order: | Polypodiales |
| Family: | Pteridaceae |
| Genus: | Pityrogramma |
| Species: | P. calomelanos |
| Binomial name | |
| Pityrogramma calomelanos (L.) Link [1] | |
Pityrogramma calomelanos [2] [3] , commonly known as the silver fern [4] , is a rhizomatous geophyte or lithophyte native to Mexico and Tropical America [5] [6] [7] . It grows mainly in subtropical regions and has been introduced widely across Asia, Africa, and Pacific islands [8] .