Siau island

 This type of fern leaf is known on the island of Siau as Potoraha. For the people of Siau, the leaves of this plant are no longer foreign, because they are easy to find in the village. There is one interesting thing about this plant. According to the natural knowledge of the local community, this plant can be used to stop bleeding in freshly scratched wounds. Therefore, the Siau people from Saman previously gave this plant the name Potoraha, because it comes from two Siau language syllables, namely: Poto and Raha. POTO which means cut or break or stop. And RAHA which means Blood.  which can be interpreted as stopping the blood. The part used to stop the blood is a brown powder or known as the spores attached to the stem.