Asplenium nidus

Bird nest fern

Scientific name: Asplenium nidus

Family:Aspleniaceae

It forms large simple fronds visually similar to banana leaves.

 The fronds grows up to 50–150 cm long and 10–20 cm broad, with occasional individuals up to 6.6 feet (two meters) in length by up to two feet (61 centimeters) width

Leaves are light green, often crinkled, with a black midrib, and exhibit circinate vernation. 

Spores develop in sori on the underside of the fronds. These sori form long rows extending out from the midrib on the back of the outer part of the lamina (frond). 

The fronds roll back as they brown and create a massive leaf nest in the branches and trunks of trees.