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Metroxylon sagu
''Metroxylon sagu'' (true sago palm) is a species of palm in the genus ''Metroxylon'', native to tropical southeastern Asia in Indonesia (western New Guinea, and the Moluccas), Papua New Guinea, Malaysia (both Peninsular Malaysia and Sarawak) and possibly also the Philippines (though may have been introduced there).〔Germplasm Resources Information Network: (''Metroxylon sagu'' )〕
It is also naturalised in Thailand, Java, Kalimantan, Sumatra, and the Solomon Islands〔(Kew World Checklist of Selected Plant Families, ''Metroxylon sagu'' )〕
==Description==
True sago palm is a suckering (multiple-stemmed) palm, each stem only flowering once (hapaxanthic) with a large upright terminal inflorescence. A stem grows 7–25 m tall before it ends in an inflorescence. Before flowering, a stem bears about 20 pinnate leaves up to 10 m long. Each leaf has about 150-180 leaflets up to 175 cm long. The inflorescence, 3-7.5 m tall and wide, consists of the continuation of the stem and 15-30 upwardly-curving (first-order) branches spirally arranged on it. Each first-order branch has 15-25 rigid, distichously arranged second-order branches; each second-order branch has 10-12 rigid, distichously arranged third-order branches. Flower pairs are spirally arranged on the third-order branches, each pair consisting of one male and one hermaphrodite flower. The fruit is drupe-like, about 5 cm in diameter, covered in scales which turn from bright green to straw-coloured upon ripening.〔Schuiling, D.L. (2009) ''Growth and development of true sago palm (''Metroxylon sagu ''Rottbøll) with special reference to accumulation of starch in the trunk: a study on morphology, genetic variation and ecophysiology, and their implications for cultivation''. (PhD thesis Wageningen University).〕
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