Eusideroxylon
Eusideroxylon is a genus of evergreen trees of the family Lauraceae. The genus is monotypic, and includes one accepted species, Eusideroxylon zwageri. It is known colloquially in English as Bornean ironwood, billian, or ulin.
| Eusideroxylon | |
|---|---|
| Young tree of Eusideroxylon zwageri | |
| Scientific classification | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Magnoliids |
| Order: | Laurales |
| Family: | Lauraceae |
| Genus: | Eusideroxylon Teijsm. & Binn. |
| Species: | E. zwageri |
| Binomial name | |
| Eusideroxylon zwageri Teijsm. & Binn. | |
| Synonyms | |
|
Bihania borneensis Meisn. | |
It is native to Borneo and Sumatra, where it grows in lowland rain forests.
Eusideroxylon are hardwood trees reaching up to 50 metres in height with trunks over 2 metres (6 ft 7 in) in diameter, producing commercially valuable timber. The wood of E. zwageri is impervious to termites, and can last up to 100 years after being cut. Due to extensive logging, it is listed as vulnerable in the IUCN Red List.
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