Casuarina sumatrana Jungh.
Common Name: Ru
Cultivated plant at the Forest Research Institute of Malaysia
Photograph by: scott.zona
Gymnostoma sumatranum is a monoecious evergreen tree growing 5 - 10 metres tall[
The wood is often utilized locally, the tree sometimes being cultivated as a fuel crop[
]. It is also widely grown as an ornamental tree in Asia, where it has been suggested that it could be used as a Christmas tree[
Southeastern Asia - Indonesia in Sumatra.
Lowland forests on nutrient poor clay soils[
|Other Uses Rating||
|Cultivation Status||Cultivated, Ornamental, Wild
Grows naturally on podsols - these are nutrient poor soils consisting of a leached clay underneath a layer of organic material comprising mainly acid leaf fall from conifers.
This species has a symbiotic relationship with certain soil bacteria, these bacteria form nodules on the roots and fix atmospheric nitrogen. Some of this nitrogen is utilized by the growing plant but some can also be used by other plants growing nearby[
The wood is extremely hard, very heavy, tough and durable[
]. It is used for the handles of tools[
] but is rarely used because supplies are limited[
It is used as a fuel and also yields excellent charcoal[
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