Peltogyne, commonly known as purpleheart, amendoim or amaranth.

 

Peltogyne is a genus of 23 species of flowering plants in the family Fabaceae, native to tropical regions of Central and South America, where they occur in tropical rainforests.

 

Purpleheart comes from the rainforests of Brazil, Guyana, and Suriname.

 

They are medium-sized to large trees growing to 30–50m (120–150 ft) tall, with trunk diameters of up to 1.5 m. The leaves are alternate, divided into a symmetrical pair of large leaflets 5–10 cm long and 2–4 cm broad. The flowers are small, with five white petals, produced in panicles. The fruit is a pod containing a single seed.

 

Purpleheart is an extremely dense and water-resistant wood. It is ranked one of the hardest and stiffest of the woods in the world. It is so durable that it can be used in applications that require toughness, such as truck decking. 

 

The trees are prized for their beautiful heartwood which, when cut, quickly turns from a light brown to a rich purple color. Exposure to ultraviolet (UV) light darkens the wood to a brown color with a slight hue of the original purple. The longer the wood is exposed to UV lights (sunlight), the colour of purple slowly changes from a light purple to a substantially chocolate-purple colour. This effect can be minimized with a finish containing a UV inhibitor.

 

The dry wood is very hard and dense with a specific gravity of 0.86 (54 lb/ft^3 or 860 kg/m^3). Carbide blades are recommended when working with purpleheart wood. The wood is also known as amaranth and violet wood. Overharvesting has caused several species to become endangered in areas where they were once abundant.