Resam Fern
About the Resam Fern in Singapore
Last updated 31 May 2026
The Resam Fern (Dicranopteris linearis) is a widespread and highly aggressive fern found throughout Singapore. It is a common resident of secondary forests, forest edges, and exposed, disturbed land.
Identifying features
Check out some identifying features of the Resam Fern!
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The Resam features unique, repeatedly forking branching, where each leaf axis splits perfectly into two in a pattern known as dichotomous branching. Small, dormant, hairy resting buds are nestled directly in the "V" shape of the leaf axis forks. Additionally, hidden, sprawling rhizomes grow underneath its thickets of fronds.
Habitat and ecology
Resam thrives in full, harsh sunlight and highly acidic, nutrient-poor soils where many other plants cannot survive. It uses its stiff stems to scramble over other vegetation, eventually forming massive, dense, impenetrable thickets that can suppress the growth of young trees but are excellent at preventing soil erosion.
Did you know?
The leaf stalks and leaf axis of the Resam Fern are incredibly strong, lightweight, and flexible. In the past, indigenous communities in the region would split the hard outer layers and weave them to create durable items like fish traps, baskets, belts, and even penholders!
Learn more about the Resam Fern!
Curious about the Resam Fern? Here are some interesting articles you can read to learn more about them.
