Pholidocarpus majadum (Local name: Tegul) photographed in peat swamp forest at Kuala Abai  on the Kinabatangan river in Sabah by Anthea Phillipps. P. majadum is locally common in peatswamp forest in Borneo occasionally found elsewhere

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Note that the fruit are relatively small and immature. Photographed in peat swamp forest at Kuala Abai  on the Kinabatangan river in Sabah by Anthea Phillipps.
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These larger mature fruit are growing on a Pholidocarpus majadum palm growing next to the lake at  Rainforest Discovery Center, Sepilok, Sabah. Note the vicious thorns on the petioles (leaf stalks) typical of Pholidocarpus palms.
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Pholidocarpus majadum palm growing next to the lake at the  Rainforest Discovery Center, Sepilok, Sabah.
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Pholidocarpus majadum palm growing next to the lake at  Rainforest Discovery Center, Sepilok, Sabah. Tony Lamb to show the scale. 
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Note the spelling mistake. P. maiadum should be P. majadum.
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The mature fruit can be very large up to 15 cm diameter whilst the seeds are relatively small in comparison. This is a typical elephant dispersed fruit. The stiff hairs which join the hard seed to the sweet pulp  ensure that the  fruit must be swallowed whole. The fruit is so large that only an elephant can swallow it  whole. The relatively small very hard seed will pass intact through the elephants digestive system. 
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The small spike on the seed is  a “carrying handle” so that once the elephant has defecated the bare seed a rodent  can drag the seed back to it’s larder in the peat swamp forest.