Macrotropis sumatrana Miq.
Ormosia microsperma Baker
Ormosia sumatrana is an evergreen tree growing up to 20 metres tall.
The tree is harvested from the wild for its wood, which is used locally.
The plants, but especially the seed and perhaps also the bark, of many if not all species in this genus contain alkaloids and are toxic[
Southeast Asia - Thailand, Laos, Vietnam, Malaysia, Indonesia.
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We have seen no specific reports for this species, but the brightly coloured seeds of various members of this genus are so commonly used as beads that the various species are often called necklace trees[
The wood is hard but not durable[
]. It is used for floors and the beams of native houses[
Like many species within the family Fabaceae, once they have been dried for storage the seeds of this species may benefit from scarification before sowing in order to speed up and improve germination. This can usually be done by pouring a small amount of nearly boiling water on the seeds (being careful not to cook them!) and then soaking them for 12 - 24 hours in warm water. By this time they should have imbibed moisture and swollen - if they have not, then carefully make a nick in the seedcoat (being careful not to damage the embryo) and soak for a further 12 hours before sowing[
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