Bulnesia sarmientoi

Bulnesia sarmientoi (recently reclassified as Gonopterodendron sarmientoi) is a tree that inhabits a part of the Gran Chaco area in South America, around the Argentina-Bolivia-Paraguay border. Its wood is often traded as "Paraguay lignum vitae", since it has properties and uses similar to the "true" lignum vitae trees of genus Guaiacum, which are close relatives. Another trade name is "vera" or "verawood", which may also refer to the even more closely related B. arborea. Another common but rather ambiguous name is palo santo (Spanish: "holy stick"), which it shares with the species Bursera graveolens. Bulnesia sarmientoi heartwood is brown, black, and green (varying in color from light olive green to chocolate brown), with streaks. The sapwood is mostly thin and light yellow. The basic specific gravity of this wood is between 0.92 and 1.1 g/cm3.