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VIROLA (Dialyanthera gracilipes)
Nombre comercial
Virola
Nombre científico (con autor)
Dialyanthera gracilipes A.C. Sm.
Familia
MYRISTICACEAE
Nombres Comunes
White Cedar (Panama); Sebo (Costa Rica); Otoba (Venezuela); Sangre De Gallina (Ecuador); Coco (Ecuador); Otobo (Colombia); Cuángare (Ecuador); Cuángare (Colombia)
Nombres científicos sinónimos (con autores)
Otoba gracilipes (A.C. Sm.) A.H. Gentry
DESCRIPCIÓN DEL ÁRBOL
Descripción botánica
It attains heights from 30 to 35 m, with a diameter over the buttresses of 60 cm. The bole has a commercial length of 20 m.
Hábitat natural
Dialyanthera gracilipes is a gregarious species ( grouped in "Guandales"-Colombia-), it prefers swampy freshwater tropical forests of the Pacific coast.
Distribución natural
Various species in this genus are reported to be distributed from Costa Rica and Panama through Venezuela, Colombia and Perú.
IDENTIFICACIÓN DE LA MADERA
Descripción anatómica de la madera
Wood diffuse porous. Vessels solitary and in short radial multiples. Tangential diameter of vessel lumina 150 to 200 micras (medium). Vessels per mm2 6 to 10 (medium). Simple perforation plates. Multiple perforation plates. Vessel-ray pits coarse throughout the Axial parenchyma absent or extremely rare, non visible with magnifying glass (8x). Paratracheal axial parenchyma scanty and/or vasicentric. 4 to 10 rays per mm (medium). Rays 1 to 2 seriate. Body ray cells procumbent with over 4 rows of upright and/or square marginal cells (Kribs-I). Occasionally septate fibers present. Fibers with simple to minutely bordered pits. Fibers storied.
Disponibilidad
Status de protección por CITES
Unrestricted
DESCRIPCIÓN GENERAL DE LA MADERA
Olor
It has a typical odor when freshly cut.
Color
The sapwood is pink, the heartwood is reddish yellow color.
Indice de Color (1= Negro, violeta; 7= Amarillo claro, blanco)
4
Grano
This species is reported to have straight grain.
Veta
Medium texture is reported in this species.
Brillo
The wood is described as moderate in luster.
Indice de Durabilidad Natural (1=Muy alta, 7=Muy baja)
5
Contenido de sílice
Silica Content: Cuangare (Dialyanthera spp.) is reported to have 0.06% of silica. Silica Value: 0.06
Dificultad para impregnar
The heartwood is rated as moderately permeable, but the sapwood can be readily treated.
PROPIEDADES FÍSICAS DE LA MADERA
Densidad Básica (Peso anhidro/Vol. saturado) (g/cm³)
0.32
Densidad seca al aire (Peso y volúmen CH12%) (g/cm³)
0.34
Contracción Tangencial Total (Saturado hasta anhidro) (%)
9.7
Contracción Radial Total (Saturado hasta anhidro) (%)
4.3
Defectos por secado
Ease of Drying: Air drying is reported to be fast. Drying Defects: Risk of bowing and twisting is reported. Sometimes severe checking in quarter sawn boards. Kiln Schedules: Careful drying is recommended.
Calendario de Secado
US-T5-C3; JUNAC-A
Estabilidad Dimensional (Contracción Total Tangencial %/Contracción Total Radial %)
2.3
PROPIEDADES QUÍMICAS DE LA MADERA
PROPIEDADES MECÁNICAS DE LA MADERA
TRABAJABILIDAD
Aserrado
Sawing of this species is reportedly easy.
Cepillado
Good results are reported with an angle of 25 degrees.
Moldurado
Molding of this species is reported to be easy.
Taladrado
Boring operations are fair.
Lijado
Wood of this species is easy to sand.
Usos Reportados
USOS FINALES (RESUMEN)
HOUSING GENERAL, joists, boards, frames, fittings, PLYWOOD AND VENEER, PACKING, OTHER AND MUSICAL INSTRUMENTS, handicrafts, moldings, particleboard
VIVIENDA GENERAL
- 10 - Silica in Timbers
Viguetas
- 12 - Tropical timbers of the world. Part I-Tropical American Species
Tablas
- 13 - Dry kiln schedules for commercial woods. Temperate and tropical. Section III. Latin American (Mexico, Central, and South America) Woods–Conventional Temperatures
Marcos
- 16 - Woods of the World
Accesorios de madera
- 19 - Silica in Timbers
TABLEROS Y CHAPAS
- 25 - Directory of Timber Trade Malaysia
PALLETS_EMBALAJES
- 45 - Recopilación y Análisis de Estudios Tecnológicos de Maderas Peruanas
artesanía
- 66 - Maderas latinoamericanas. VII. Caracteristicas anatomicas. propiedades fisicomecanicas, de secado, y tratabilidad de la madera juvenil de Cordia alliodora (Ruiz & Pav. Oken.)
Molduras
- 79 - Padronização da Nomenclatura Comercial Brasileira das Madeiras Tropicais Amazônicas, Sugestão
Tablero de partículas
- 80 - Estudio Integral de la Madera para Construcción
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