NUI (Pseudolmedia laevis)
Nombre comercial
Nui
Nombre científico (con autor)
Pseudolmedia laevis (Ruiz & Pav.) J.F. Macbr.
Familia
MORACEAE
Nombres Comunes
Guión (Ecuador); Cabecita (Ecuador); Capulí Silvestre (Ecuador); Chimi (Ecuador); Uido (Colombia); Vara Piedra (Colombia); Pamma (Bolivia); Palo Pichi (Bolivia); Ojoso Colorado (Bolivia); Chamame (Bolivia); Nui (Bolivia); Inaubú (Bolivia); Negra Lora (Puerto Rico); Cherry Manax (Belize); Muiratinga (Brazil); Charo Macho (Venezuela); Leche Perra (Colombia); Leche Chiva (Colombia); Itahuba (Perú); Chimicua Colorada (Perú); Chimicua (Perú)
Nombres científicos sinónimos (con autores)
Pseudolmedia sagotii Benoist; Pseudolmedia obliqua (H. Karst.) Renner; Pseudolmedia multinervis Mildbr.; Pseudolmedia hirtellaefolia Rusby; Pseudolmedia hirsuta Baill.; Pseudolmedia ferruginea (Poepp. & Endl.) Trécul; Pseudolmedia alnifolia Rusby; Olmediopsis obliqua H. Karst.; Olmediopsis lanceolata H. Karst.; Olmedia laevis Ruiz & Pav. ; Olmedia ferruginea Poepp. & Endl. ; Olmedia caurensis Pittier
DESCRIPCIÓN DEL ÁRBOL
Descripción botánica
It is a medium sized tree, attaining heights of 25 m and diameters of 50 cm. The boles are straight.
Hábitat natural
This species is reported to be distributed in the tropical and subtropical forests of northern South America.
Distribución natural
Colombia, Venezuela, Brazil, Ecuador, Perú and Bolivia.
IDENTIFICACIÓN DE LA MADERA
Descripción anatómica de la madera
Wood diffuse porous. Vessels solitary and in short radial multiples. Tangential diameter of vessel lumina 100 to 150 micras (small). White deposits in heartwood vessels. Vessels per mm2 10 to 20 (abundant). Simple perforation plates. Vessel-ray pits similar to Occasionally axial parenchyma in marginal or in seemingly marginal bands. Axial parenchyma confluent. Axial parenchyma in discontinuous tangential lines. Axial parenchyma oblique and/or sinuous. Occasionally prismatic crystals in non-chambered axial parenchym 4 to 10 rays per mm (medium). Larger rays more than 4 seriate. Occasionally prismatic crystals in the ray cells. Homogeneous rays and/or sub-homogeneous rays (all ray cells procumbent). Occasionally heterogeneous rays and/or multiseriate heterogeneous rays. Fibers very thick walled. Fibers with simple to minutely bordered pits.
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Foto macroscópica de la madera, plano tangencial
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Foto microscópica sección transversal de la madera
Disponibilidad
Status de protección por CITES
Unrestricted
DESCRIPCIÓN GENERAL DE LA MADERA
Olor
Seasoned wood has no characteristic odor or taste.
Color
The sapwood is yellow, the heartwood gradually changes into light brown color.
Indice de Color (1= Negro, violeta; 7= Amarillo claro, blanco)
4
Grano
It has interlocked grain.
Veta
The wood is mostly medium in texture.
Brillo
Luster is moderate to high.
Indice de Durabilidad Natural (1=Muy alta, 7=Muy baja)
3
Contenido de sílice
Silica Content: This species is reported to present a high silica content (1.33%). Silica Value: 1.33
PROPIEDADES FÍSICAS DE LA MADERA
Densidad Básica (Peso anhidro/Vol. saturado) (g/cm³)
0.73
Densidad seca al aire (Peso y volúmen CH12%) (g/cm³)
0.83
Defectos por secado
Ease of Drying: Drying is rated as moderate to rapid. Drying Defects: Risk of warping is reported.
Calendario de Secado
JUNAC-B
PROPIEDADES QUÍMICAS DE LA MADERA
PROPIEDADES MECÁNICAS DE LA MADERA
Resistencia a flexión (Módulo de ruptura) CH12% (kgf/cm²)
1080
Rigidez (Módulo de elasticidad) CH12% (kgf/cm²)
151000
Resistencia a la compresión paralela a la fibra CH12% (kgf/cm²)
561
Resistencia a la compresión perpendicular a la fibra CH12% (kgf/cm²)
57
Cizallamiento radial CH12% (kgf/cm²)
92
Dureza Janka (lados) CH12% (kgf)
652
Dureza Janka (extremos) CH12% (kgf)
750
TRABAJABILIDAD
Aserrado
Cutting behavior is reported to be fair to difficult.
Cepillado
Planing of this species is fair.
Moldurado
This species is easy to mold.
Taladrado
Boring is reported to be easy.
Usos Reportados
USOS FINALES (RESUMEN)
EXTERIOR GENERAL, bridges, poles, stakes posts, crossarms, piers
EXTERIOR GENERAL
- 1 - Tabela de resultados de ensaios fisicos e mecanicos
Puentes
- 2 - 25 madeiras da amazonia de valor comercial, caracterizacao, macroscopica, usos comuns e indices qualificativos
Postes de transmisión
- 3 - Estudo dendrologico e determinacao das caracteristicas fisicas e mecanicas do genipapo (Genipa americana)
Postes cerca
- 5 - Propriedades fisicas e mecanicas da madeira e do contraplacado de Pinus elliottii
Crucetas
- 7 - Maderas latinoamericanas. II, Quercus alata Q. costaricensis y Q. eugeniaefolia
Pilotes
- 9 - Maderas latinoamericanas. IV, Nectandra sp. Ocotea austinii, Persea sp. aff. vesticula, Persea schiedeana
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