Astronium urundeuva (Allemao) Engl.
Pau-ferro (Brazil); Aderno; Gibatão (Brazil); Guaritá; Urunday Del Noroeste; Urunde`y mi; Cuchi; Arveira (Brazil); Orindeúva (Brazil); Areoeira Petra (Brazil); Arendeúva (Brazil); Arindeúva (Brazil); Aroeira Do Campo (Brazil); Aroeira Da Serra (Brazil); Gonçalo Alves (Brazil); Aroeira Legitima (Brazil); Aroeire; Urundeuva (Brazil); Aroeira Do Sertão (Brazil)
Myracrodruon urundeuva Allemao; Astronium juglandifolium Griseb.
It is a medium size tree, it attains heights from 20 to 25 m, with a diameter at breast height between 40 to 90 cm. Occasionally the diameter reaches 100 cm.
Astronium urundeuva is a dominant tree occurring widely in the cerrado forests. Large natural stands have become scarce in many places. In the "Chaco" region it is reported to form quite homogeneous stands.
It is found in Argentina, Bolivia; Brazil and Paraguay.
The bark is reported to contain up to 17% of tannin, it is used as a black dye.
Wood diffuse porous. Vessels solitary and in short radial multiples. Tyloses common. Vessels per mm2 10 to 20 (abundant). Simple perforation plates. Vessel-ray pits coarse in marginal rows. Vessel-ray pits larger than the intervessel pits. Occasionally intervess Axial parenchyma absent or extremely rare, non visible with magnifying glass (8x). Paratracheal axial parenchyma scanty and/or vasicentric. Occasionally prismatic crystals in non-chambered axial parenchyma cells. 3 to 4 cells per parenchyma strand. Rays 1 to 4 seriate. Larger rays more than 4 seriate. Prismatic crystals in the ray cells. Homogeneous rays and/or sub-homogeneous rays (all ray cells procumbent). Heterogeneous rays and/or multiseriate heterogeneous rays. Body ray cells procumbent with mostly Non-septate fibers. Fibers with simple to minutely bordered pits.
Distinct and unpleasant
The white yellowish sapwood is clearly differentiated from the pinkish or light brown heartwood.
The grain is reported to be straight or interlocked.
This species is usually reported to have a medium texture.
Luster is usually moderate.
The wood is very resistant, even under extreme exposure conditions.
The heartwood is reported to be very difficult to treat, but the sapwood treats well.
Ease of Drying: Air seasoning is reported to be fairly rapid. Drying Defects: Warping is reported. Risk of casehardening when thick stock is processed. Kiln Schedules: Careful drying is recommended.
The response of this wood in sawing is fair.
It is a very hard wood, reinforced cutting tools are recommended.
Planing of this species is fair.
Boring operations are fair.
This species is reported to be easy to finish.
This wood was used for cross-ties grouped under the common name of "quebracho colorado" (Schinopsis spp.).
EXTERIOR GENERAL, bridges, poles, paling, stakes posts, rails, crossarms, crossties, piers, HOUSING GENERAL, beams, joists, flooring, TURNING, lasts, PACKING, CONTAINERS, truck bodies, truck flooring, OTHER AND MUSICAL INSTRUMENTS, yoke