Aspidosperma quebracho-blanco Schltdl.
White quebracho; Weisse quebrachoholz; Quebraco bianco; Quebracho blanco lloron; Quebracho blanco colorado; Quebrachillo; Horco quebracho; Quebracho blanco
Macaglia quebracho-blanco (Schltdl.) Lyons; Aspidosperma crotalorum Speg.; Aspidosperma chakensis Speg.
It is a 15 to 18 m tall tree, with a trunk diameter of about 80 cm. Heights of up to 33 m and trunk diameters of up to 100 are also reported.
Aspidosperma quebracho-blanco is found in the subtropical humid forests in the "Chaco" formation.
This species is reported to occur in the southern forests of Bolivia in Santa Cruz and Beni, close to the border with Paraguay in the "Chaco" area.
The bark of this tree is reported to have alkaloids, and it is used as a natural medicine against pulmonary and cardiovascular ailments.
Wood diffuse porous. Vessels exclusively solitary (over 90%). Tangential diameter of vessel lumina 100 micras or less (very small). Vessels per mm2 10 to 20 (abundant). Simple perforation plates. Vessel-ray pits similar to intervessel pits in size and shape. In Apotracheal axial parenchyma diffuse and/or diffuse in aggregates. Prismatic crystals in non-chambered axial parenchyma cells. Prismatic crystals in chambered axial parenchyma cells and/or in fibers. 5 to 8 cells per parenchyma strand. Rays more than 10 per mm (abundant). Rays 1 to 4 seriate. Prismatic crystals in the ray cells. Homogeneous rays and/or sub-homogeneous rays (all ray cells procumbent). Fibers with distinctly bordered pits.
Pleasant smell is reported
The sapwood differentiated, it is pinkish yellow. It makes a sharp contrast with heartwood which is dark brown
The grain is frequently interlocked.
The texture of the wood is fine.
Luster is reported to be moderate.
This species is reported as durable, especially when it is not in contact with the ground.
Quebracho blanco is moderately permeable, it has a high retention of oil and water based preservatives.
Ease of Drying: It is moderately difficult to air season, it dries at a moderate rate. Drying Defects: Slight checking and moderate warping are reported. Casehardening may occur in thick stock. Kiln Schedules: Drying of pieces over 40 mm is reported to be very difficult, slow drying is recommended.
Sawing of this species is reportedly fair.
Machining is difficult because of its hardness, reinforced cutting tools are recommended.
Planing of this species is fair.
Boring of this species is fair.
This wood is difficult to nail.
The behavior in gluing is fair.
It has a good finishing.
Polishing behavior is fair.
A. quebracho-blanco can be bent with good results.
It has been suggested as a substitute for Ash or Hickory for tools handles. In situations where strength is important, it could replace rock maple or beech.
EXTERIOR GENERAL, crossarms, crossties, HOUSING GENERAL, beams, joists, boards, flooring, frames, steps, FURNITURE AND CABINETS, common furniture, PLYWOOD AND VENEER, common veneer, TURNING, turned furniture, TOOLS, tool handles, agricultural tools, PACKING, pallets, CONTAINERS, truck bodies, truck flooring