Large fern that resembles a tree and can reach heights of up to 20 m; it grows mainly in the tropics.
trunk
Main part of the fern, composed of a vertical rhizome covered with the stubs of old fronds and, often, with aboveground adventitious roots.
bird’s nest fern
Fern that usually grows out of another plant without deriving nourishment from it; its fronds grow in a rosette around a central rhizome, hence its name.
common polypody
Fern with fronds up to 30 cm long; it is usually found in damp overgrown soil, on rocks or tree trunks.
