Flora index
Fauna index
guide to the mangroves of singapore
Peter K L Ng and N Sivasothi (editors)
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.

See also Acrostichum aureum for differences between the two species.

About mangrove ferns in general.
close-up of fertile leaf tips
Leaflet tips gradually
narrow to a pointed tip

fertile and infertile leaves
Habit of Acrostichum speciosum
What is mangrove?

The Ecosystem


Indirect uses
Potential uses

About Mangroves
in Singapore

Mangroves to visit
From "A Guide to Mangroves of Singapore", Peter K. L. Ng and N. Sivasothi (editors)
Volume 1: The Ecosystem and Plant Diversity and Volume 2: Animal Diversity
Authors: Kelvin K. P. Lim, Dennis H. Murphy, T. Morgany, N. Sivasothi, Peter K. L. Ng,
B. C. Soong, Hugh T. W. Tan, K. S. Tan & T. K. Tan
BP Guide to Nature Series published by the Singapore Science Centre, sponsored by British Petroleum
2001 Raffles Museum of Biodiversity Research, The National University of Singapore & The Singapore Science Centre