Piai lasu
Acrostichum speciosum
Class Filicopsida, Family Pteridaceae
Tropical Asia and Australia. Locally, in most northern natural or reclaimed sites and Pulau Semakau. Rhizomes covered with scales up to 8 mm long; leaves to about 1.5m long, brownish-green when young; lower surface of fertile leaflets completely covered with dark brown sporangia, blades of sterile leaflets gradually tapering to a narrow tip. Tidal zone on seaward side of mangrove swamps, usually in the shade or reclaimed land. Common.