Pityrogramma Calomelanos is a fern species commonly known as the silver fern or silver lace fern. It belongs to the family of ferns known as Pteridaceae and is native to tropical and subtropical regions of the Americas. The silver fern is characterized by its delicate, silver-green fronds that form an intricate lacy pattern. Synonyms for Pityrogramma Calomelanos include the mountain lace fern, silver cloak fern, and the silver rock fern. This fern species is a popular choice for indoor and outdoor ornamental use due to its attractive and unique appearance. Additionally, some cultures regard the silver fern as a symbol of good luck and prosperity.