Eusideroxylon zwageri Teijsm. & Binn., Natuurk. Tijdschr. Ned. Ind. 25 () Eusideroxylon borneense Fern.-Vill. Salgada lauriflora Blanco. Diagnostics. Family Name: Lauraceae. Common Names: Borneo Ironwood, Billian, Ironwood , Ulin, Belian. Borneo Ironwood,Billian,Ironwood,Ulin,Belian. Record Info. Typical habitat, Habitat of E. zwageri: E. zwageri is able to grow under soil which seasonally waterlogged. Senami forest, Jambi Indonesia.

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Eusideroxylon zwageri

The large fruits are poisonous and pulverized fruits have been used medicinally against swellings. In Sarawak, export in any form is eusideeoxylon allowed without special permission.

Walau bagaimanapun, anak benihnya mudah bercambah di persekitaran yang sesuai. Blunting Effect It blunts saw-teeth fairly rapidly, owing to its hardness.

Datasheet Eusideroxylon zwageri billian. The flowers are usually eusideroxy,on to greenish or white, rarely reddish. Also attractive to users is the resistance to insectsbacteriafungi and marine borers.

Retrieved 8 July There is one pistil and one carpel. Kerana kepadatannya, Eusideroxylon zwageri merupakan salah satu antara beberapa kayu lain yang tidak timbul di dalam air. Belian seeds are poisonous and very hard.


Ulin (Eusideroxylon zwageri) | ITTO

Eusideroxylon zwageri is a rare timber tree native to the BruneiIndonesiaMalaysia and Philippines region. Taxonomic Tree Top of page Domain: Prismatic crystals in radial alignment in procumbent ray cells chambered cells. It thrives in a climate with an average annual rainfall of mm. Its height was however reduced from some 30 metres to only 20 after a lightning strike. It is commonly found along rivers and adjacent hills.

The diameter is approx.

Eusideroxylon zwageri

Belian tree is a tree species that grows slowly and will take up to years to reach 30 cm diameter. Manual selection of trees in natural forests is common. Ulin occurs also in mixed dipterocarp forest and has been found associated with Koompassia, Shorea, and Intsia species. Uses Ulin is one of the heaviest and most durable timbers of South-East Asia.

Silica Content Silica Content: Ironwood Eusideroxylon zwageri Teijsm.

Another major use of ulin is for roof shingles ‘sirap’ which are reported to last 50 years to more than a century. The timber retains a pleasant lemon odour. The Dayak believe that this use of the ulin talisman and the stands of ulin trees was and is the sole cause of a lack eusiderroxylon Sumatran elephants or Sumatran tigers in Kalimantan and Sarawak.


Kalimantan, Sumatra, Sabah, Sarawak, and the Philippines. It is also frequently found in dry docks as a timber to separate the hull of ships from the steel supporting stands. The stamens are in multiples and whorls of 3, but 1 or more whorls are frequently staminodial or absent. Kayu belian tergolong dalam kumpulan kayu keras berat yang bermutu dan mempunyai nilai pasaran yang tinggi.

Bornean ironwood Conservation status. Apparently, the wood is difficult to glue with synthetic resins.

This very important tree is one of the most durable and heaviest timbers in the world. The line width was 2 m, the distance between lines was 5 m and distance between seedlings was 2 m. Internationally, it is renowned for heavy construction such as a buffer between transportation trailers and heavy steel fabrications such eusiseroxylon boilerspressure vesselsreactors and many others.