HERNANDIA (Hernandia ovigera)
Nom commercial
Hernandia
Nom scientifique (avec auteur)
Hernandia ovigera L.
Famille
HERNANDIACEAE
Noms communs (pays)
Taba-taba; Pantog-lobo; Malatapai; Malatangan-tangan; Kung-kung; Koron-koron; Kolong-kolong; Kolon-kogon; Kementing laut; Indang; Hemandia; Banago
Synonymes du nom scientifique (avec auteurs)
Hernandia sonora L.; Hernandia papuana C.T White; Hernandia labyrinthica Tuyama; Hernandia javanica Yuyama
DESCRIPTION DE L'ARBRE
Description botanique
It is a small to medium-sized tree up to 30 m tall. The bole is up to 100 cm in diameter, sometimes with small buttresses.
Habitat naturel
Hernandia ovigera is reported in primary or sometimes in old secondary usually well drained forests, from the sea level up to 1,000 m of altitude.
Usages non ligneux
The fruits are edible and the seeds contain oils locally used for illumination in Java.
IDENTIFICATION DU BOIS
Description anatomique du bois
Wood diffuse porous. Occasionally vessels in radial multiples of 4 or more common. Occasionally vessels of two distinct diameter classes, wood not ring-porous. Occasionally vessel clusters common. Occasionally tangential diameter of vessel lumina 100 micras o Axial parenchyma in marginal or in seemingly marginal bands. Paratracheal axial parenchyma scanty and/or vasicentric. Axial parenchyma aliform. Occasionally axial parenchyma confluent. Axial parenchyma storied. Occasionally prismatic crystals in non-chambered 4 to 10 rays per mm (medium). Rays storied. Larger rays more than 4 seriate. Sheath cells. Prismatic crystals in radial alignment in procumbent ray cells (chambered cells). Occasionally body ray cells procumbent with mostly 2 to 4 rows of upright and/or square Fibers very thin walled. Fibers with simple to minutely bordered pits. Fibers storied.
Disponibilité
Statut CITES
Unrestricted
DESCRIPTION GÉNÉRALE DU BOIS
Teinte
The heartwood and sapwood are not clearly differentiated, light yellowish-gray to grayish-white.
Grain
The grain is frequently interlocked.
Texture
A coarse texture is reported in this species.
Durabilité naturelle
It is considered as non durable without a preservative treatment.
Index de durabilité naturelle (1 = Très élevée, 7 = Très faible)
5
Résistance à l'imprégnation
It is easy to preserve using pressure treatments.
PROPRIÉTÉS PHYSIQUES DU BOIS
Densité basale ou gravité spécifique (poids anhydre/vol. saturé) (g/cm³)
0.28
Densité sèche à l'air (poids et volume à 12%TH) (g/cm³)
0.29
Retrait tangentiel total (saturé à 0%TH) (%)
7.9
Retrait radial total (saturé à 0%TH) (%)
3.5
Défauts dus au séchage
Ease of Drying: Seasoning is reported to be very good.
Ratio de stabilité dimensionnelle (% retrait tangentiel total/% retrait radial total)
2.3
PROPRIÉTÉS CHIMIQUES DU BOIS
PROPRIÉTÉS MÉCANIQUES DU BOIS
Résistance à la flexion (module de rupture_MOR) 12%TH (kgf/cm²)
367
Rigidité (module d'élasticité_ MOE) 12%TH (kgf/cm²)
70311
Résistance à la compression parallèle à la fibre 12%TH (kgf/cm²)
183
Résistance au cisaillement (radial) 12%TH (kgf/cm²)
47
OUVRABILITÉ
Usinage
Machining of this species is reported to be easy.
UTILISATIONS
UTILISATIONS FINALES (RÉSUMÉ)
HOUSING GENERAL, FURNITURE AND CABINETS, OTHER AND MUSICAL INSTRUMENTS
MEUBLES ET M. DE RANGEMENT
- 10 - Silica in Timbers
MEUBLES ET M. DE RANGEMENT
- 21 - Tropical timbers of the world. Part III-Southeast Asian and Oceanian Species.
AUTRES ET INSTRUMENTS DE MUSIQUE
- 63 - Madeiras do Brazil II
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