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PúNULA (Quararibea asterolepis)
Nom commercial
Púnula
Nom scientifique (avec auteur)
Quararibea asterolepis Pittier
Famille
BOMBACACEAE
Noms communs (pays)
Punula; Aspai; Guayabo (Panama); Madre De Cacao (Mexico); Veroity (Brazil); Aspaí (Venezuela); Zapotillo (Peru); Zapotillo (Colombia); Púnula (Colombia)
Synonymes du nom scientifique (avec auteurs)
Quararibea stenophylla Pittier; Quararibea asterolepis subsp. Stenophylla
DESCRIPTION DE L'ARBRE
Description botanique
Tree size is reported to attain a height of about 18m in the average, with a trunk diameter that can reach up to 45 cm over the buttresses, which can be up to 6 m long. Usually develops a fluted stem.
Répartition naturelle
This species occurs in Central and northern South America down to Peru.
IDENTIFICATION DU BOIS
Description anatomique du bois
Wood diffuse porous. Vessels solitary and in short radial multiples. Tangential diameter of vessel lumina 100 to 150 micras (small). Vessels per mm2 less than 6 (rare). Simple perforation plates. Vessel-ray pits similar to intervessel pits in size and shape. Paratracheal axial parenchyma thin vasicentric. Axial parenchyma reticulate. Siliceous bodies in the axial parenchyma cells. Axial parenchyma in narrow bands on lines up to 3 cells wide. 4 to 10 rays per mm (medium). Larger rays more than 4 seriate. Silica bodies in the ray cells. Prismatic crystals in the ray cells. Body ray cells procumbent with mostly 2 to 4 rows of upright and/or square marginal cells (Kribs-II). Non-septate fibers. Fibers with simple to minutely bordered pits.
Disponibilité
Statut CITES
Unrestricted
DESCRIPTION GÉNÉRALE DU BOIS
Odeur
Odor and taste are indistinct.
Teinte
The wood is not clearly differentiated, the heartwood is pale yellow.
Index de Teinte (1 = Noir, 7 = Jaune clair)
5
Grain
The grain is usually straight.
Texture
This wood has a somewhat medium texture.
Luster
The wood surface is moderate in luster.
Durabilité naturelle
The wood is non-durable when exposed to the weather.
Index de durabilité naturelle (1 = Très élevée, 7 = Très faible)
5
PROPRIÉTÉS PHYSIQUES DU BOIS
Densité basale ou gravité spécifique (poids anhydre/vol. saturé) (g/cm³)
0.49
Densité sèche à l'air (poids et volume à 12%TH) (g/cm³)
0.53
Retrait tangentiel total (saturé à 0%TH) (%)
7.1
Retrait radial total (saturé à 0%TH) (%)
3.9
Défauts dus au séchage
Ease of Drying: Timber of heavy Cordia is reported to be difficult to dry. Drying Defects: It develops surface checking and end splitting.
Calendrier de séchage en séchoir recommandé
JUNAC-A
Ratio de stabilité dimensionnelle (% retrait tangentiel total/% retrait radial total)
1.8
Calendrier de séchage en séchoir
http://www.tropicaltimber.info/wp-content/uploads/2015/08/KD_JUNAC_SPA.pdf
PROPRIÉTÉS CHIMIQUES DU BOIS
PROPRIÉTÉS MÉCANIQUES DU BOIS
Résistance à la flexion (module de rupture_MOR) 12%TH (kgf/cm²)
767
Rigidité (module d'élasticité_ MOE) 12%TH (kgf/cm²)
107000
Résistance à la compression parallèle à la fibre 12%TH (kgf/cm²)
422
Résistance à la compression perpendiculaire à la fibre 12%TH (kgf/cm²)
70
Résistance au cisaillement (radial) 12%TH (kgf/cm²)
85
Dureté Janka (latérale) 12%TH (kgf)
509
Dureté Janka (extrémités) 12%TH (kgf)
458
OUVRABILITÉ
Usinage
It is easy to machine.
Tournage
30
UTILISATIONS
UTILISATIONS FINALES (RÉSUMÉ)
HOUSING GENERAL, fittings, shutter boards, FURNITURE AND CABINETS, cabinets, PLYWOOD AND VENEER, TURNING, OTHER AND MUSICAL INSTRUMENTS, handicrafts
MEUBLES ET M. DE RANGEMENT
- 10 - Silica in Timbers
Accessoires en bois
- 19 - Silica in Timbers
Volets
- 20 - Prospect: The wood database
MEUBLES ET M. DE RANGEMENT
- 21 - Tropical timbers of the world. Part III-Southeast Asian and Oceanian Species.
Armoires
- 24 - Empire Timbers
PANNEAUX ET PLACAGE
- 25 - Directory of Timber Trade Malaysia
Tournage
- 30 - Embassy of Honduras in Japan
Artisanat
- 66 - Maderas latinoamericanas. VII. Caracteristicas anatomicas. propiedades fisicomecanicas, de secado, y tratabilidad de la madera juvenil de Cordia alliodora (Ruiz & Pav. Oken.)
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