NUI (Pseudolmedia laevis)
Trade Name
Nui
Scientific Name
Pseudolmedia laevis (Ruiz & Pav.) J.F. Macbr.
Family
MORACEAE
Common Names
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 (Peru); Chimicua Colorada (Peru); Chimicua (Peru)
Scientific Name Synonyms
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
Description Of The Tree
Botanical Description
It is a medium sized tree, attaining heights of 25 m and diameters of 50 cm. The boles are straight.
Natural Habitat
This species is reported to be distributed in the tropical and subtropical forests of northern South America.
Natural Distribution
Colombia, Venezuela, Brazil, Ecuador, Peru and Bolivia.
Wood Identification
Anatomic Description Of Wood
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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Wood Macro Photo Tangential Plane
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Wood Micro Photo Of Transversal Section
Availability
Cites Status
Unrestricted
General Wood Description
Odor
Seasoned wood has no characteristic odor or taste.
Color
The sapwood is yellow, the heartwood gradually changes into light brown color.
COLOR INDEX (1=Black, 7=Light yellow,white)
4
Grain
It has interlocked grain.
Texture
The wood is mostly medium in texture.
Luster
Luster is moderate to high.
Natural durability index (1= Very high durability, 7=Vey low durability)
3
Silica Content
Silica Content: This species is reported to present a high silica content (1.33%). Silica Value: 1.33
Wood Physical Properties
Basic Density or Specific Gravity (O.D. weight/vol. green) (g/cm³)
0.73
Air-dry Density (Weight and volume at 12%MC) (g/cm³)
0.83
Drying Defects
Ease of Drying: Drying is rated as moderate to rapid. Drying Defects: Risk of warping is reported.
Recommended Dry Kiln Schedule
JUNAC-B
Wood Chemical Properties
Wood Mechanical Properties
Bending Strength (MOR),12%MC (kgf/cm²)
1080
Stiffness (MOE) 12%MC (kgf/cm²)
151000
Compression parallel to fiber 12%MC (kgf/cm²)
561
Compression perpendicular to fiber 12%MC (kgf/cm²)
57
Shear strength radial 12%MC (kgf/cm²)
92
Janka hardness (side) 12%MC (kgf)
652
Janka hardness (end grain) 12%MC (kgf)
750
Workability
Sawing
Cutting behavior is reported to be fair to difficult.
Planing
Planing of this species is fair.
Moulding
This species is easy to mold.
Boring
Boring is reported to be easy.
REFERENCED USES
End Uses Summary
EXTERIOR GENERAL, bridges, poles, stakes posts, crossarms, piers
Exterior General
- 1 - Tabela de resultados de ensaios fisicos e mecanicos
Bridges
- 2 - 25 madeiras da amazonia de valor comercial, caracterizacao, macroscopica, usos comuns e indices qualificativos
Poles
- 3 - Estudo dendrologico e determinacao das caracteristicas fisicas e mecanicas do genipapo (Genipa americana)
Stake Posts
- 5 - Propriedades fisicas e mecanicas da madeira e do contraplacado de Pinus elliottii
Crossheads Crossarms
- 7 - Maderas latinoamericanas. II, Quercus alata Q. costaricensis y Q. eugeniaefolia
Piers
- 9 - Maderas latinoamericanas. IV, Nectandra sp. Ocotea austinii, Persea sp. aff. vesticula, Persea schiedeana
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