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UCHIRANA (Vantanea parviflora)

Trade Name

Uchirana

Scientific Name

Vantanea parviflora Lam.

Family

HUMIRIACEAE

Common Names

Uchirana (Brazil); Uxirana (Brazil)

Scientific Name Synonyms

Vantanea cupularis Huber

Description Of The Tree

Botanical Description

The trees are reported to develop straight to irregular boles, with commercial lengths of 9 m long and 50 cm in the average. Buttresses up to 2 m are also reported.

Natural Distribution

In Brazil this species is reported in the Para and Amazonas states.

Wood Identification

Anatomic Description Of Wood

Wood diffuse porous. Vessels exclusively solitary (over 90%). Tangential diameter of vessel lumina 150 to 200 micras (medium). Vessels per mm2 6 to 10 (medium). Occasionally multiple perforation plates. Multiple perforation plates. Vessel-ray pits coarse throug Occasionally apotracheal axial parenchyma diffuse and/or diffuse in aggregates. Occasionally paratracheal axial parenchyma scanty and/or vasicentric. Prismatic crystals in non-chambered axial parenchyma cells. Prismatic crystals in chambered axial parenchyma Rays more than 10 per mm (abundant). Rays 1 to 2 seriate. Heterogeneous rays and/or multiseriate heterogeneous rays. Body ray cells procumbent with mostly 2 to 4 rows of upright and/or square marginal cells (Kribs-II). Fibers with distinctly bordered pits.

Availability

Cites Status

Unrestricted

General Wood Description

Odor

The wood has no specific odor or taste.

Color

The heartwood and sapwood are reported to be indistinct. The wood is light reddish brown color.

Grain

The grain is reported to be straight or interlocked.

Texture

The texture of the wood is medium.

Luster

It is reported to be moderate in luster.

Natural durability index (1= Very high durability, 7=Vey low durability)

2

Resistance To Impregnation

It is reported to be easy to preserve with oil or water soluble substances.

Wood Physical Properties

Basic Density or Specific Gravity (O.D. weight/vol. green) (g/cm³)

0.86

Air-dry Density (Weight and volume at 12%MC) (g/cm³)

0.99

Total shrinkage Tangential (Saturated to 0%MC) (%)

10.3

Total shrinkage Radial (Saturated to 0%MC) (%)

8.2

Drying Defects

Ease of Drying: This species dries rapidly. Drying Defects: Severe checking is reported.

Recommended Dry Kiln Schedule

BR-B

Dimensional stability ratio (Total Tangential Shrinkage %/Total Radial Shrinkage %)

1.3

Wood Chemical Properties

Wood Mechanical Properties

Bending Strength (MOR),12%MC (kgf/cm²)

1732

Stiffness (MOE) 12%MC (kgf/cm²)

179000

Compression parallel to fiber 12%MC (kgf/cm²)

881

Compression perpendicular to fiber 12%MC (kgf/cm²)

155

Shear strength radial 12%MC (kgf/cm²)

181

Janka hardness (side) 12%MC (kgf)

1337

Janka hardness (end grain) 12%MC (kgf)

1574

Workability

Planing

Planing is reported to be fair but it gives a good finishing. Risk of torn surfaces.

Turning

30

Boring

Boring is rated as fair, but it gives a good finishing.

Sanding

Sanding operations give a fair finishing because of fuzzy surfaces.

REFERENCED USES

End Uses Summary

HOUSING GENERAL, FURNITURE AND CABINETS, TURNING, OTHER AND MUSICAL INSTRUMENTS, handicrafts

General Housing
  • 10 - Silica in Timbers
Furniture Cabinets
  • 21 - Tropical timbers of the world. Part III-Southeast Asian and Oceanian Species.
Turning
  • 30 - Embassy of Honduras in Japan
Handcraft
  • 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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