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Plants

Cabbage tree

Pisonia grandis

Cabbage Tree (Pisonia) canopy

Pisonia gives seabirds a canopy and spreads its seeds on their feathers. Sometimes that sticky partnership becomes a trap.

Local names
Pu’atea (French Polynesia), Gatae / Puka (Tuamotu Islands), Pukatea (Marquesas Islands)

Family
Nyctaginaceae
Biogeographical status
Indigenous
Life form
Tree
Abundance
Common
Ecosystem
Primary forest

About this species

Native across islands of the Pacific and Indian oceans, this coastal tree can reach 25 metres. Its English common name refers to leaves formerly eaten raw or cooked. It can form dense stands on small islands, with branches used by nesting or resting seabirds.

Its brittle wood breaks readily and decays quickly, enriching the soil around the tree. The guide records pisonia on nearly every Tetiaroa motu, with a dense, almost single-species forest on Reiono.

Sticky, barbed seeds attach to feathers and travel with birds. If too many accumulate, however, the feathers become matted and the bird can lose its ability to fly.

Butaud J.F., 2013. Tuamotu du centre, Guide floristique. Direction de l'Environnement.

Butaud J.F., Gérard J., Guibal D., 2011. Guide des arbres de Polynésie française, bois et utilisations. 2e édition, Au vent des îles.

Cabbage tree forest on Motu Reiono
Photo: Jean-Yves Hiro Meyer
A stand of large trees
Photo: Jean-Yves Hiro Meyer
A small Cabbage tree
Photo: Jean-Yves Hiro Meyer
Sticky seeds stick to bird feathers
Photo: Jean-Yves Hiro Meyer
Sticky seeds matted on the ground
Photo: Jean-Yves Hiro Meyer
A huge tree
Photo: Jean-Yves Hiro Meyer
Understory regeneration in a Cabbage Tree (Pisonia) forest
Photo: Jean-Yves Hiro Meyer

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