Prosopis nigra

Algarrobo negro
Conservation status
	; Data Deficient (IUCN 2.3)
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Rosids
Order:	Fabales
Family:	Fabaceae
Clade:	Mimosoideae
Genus:	Prosopis
Species:	P. nigra
Binomial name
	Prosopis nigra; Griseb.

Prosopis nigra (synonym Prosopis algarrobilla) is a South American leguminous tree species that inhabits the Gran Chaco ecoregion (in particular, the transition zone between the Wet Chaco and the Southern Chaco), in Argentina and Paraguay. It is known as algarrobo negro in Spanish, which means "black carob tree" (the Spanish settlers gave it that name, as they did with many other species of genus Prosopis, because of its similarity to the European carob tree). It is also variously called algarrobo dulce, algarrobo morado and algarrobo amarillo ("sweet", "purple" and "yellow" carob tree, respectively).

For other tree species with similar names, see Algarrobo (disambiguation).

The tree blossoms in September and October, and gives fruit from November to March. It grows together with the vinalillo tree (Prosopis vinalillo) and under the tops of the palm tree Copernicia alba. Like the other species of this genus, it tolerates arid climate, but can also survive in flooded ground for a long time. The heartwood is dark brown and very heavy, considered noble by local carpenters, also weather resistant, it presents streaks.

Usage

Algarrobo negro wood is used in making furniture and barrels. High in tannin, it has been employed for leather tanning since the colonial era. Its fruit, called an algarroba, is a dehiscent-type pod, with a sweet, starchy paste inside, milled to make flour, and fermented to make an alcoholic beverage.

Sources

Commercial timbers: descriptions, illustrations, identification, and information retrieval - H. G. Richter and M. J. Dallwitz
Catálogo Web de especies forestales - Facultad de Ciencias Agrarias, Universidad Nacional de Asunción (in Spanish)

Detail of timber from Prosopis nigra

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References

Prado (1998). "Prosopis nigra". IUCN Red List of Threatened Species. 1998. Retrieved 12 May 2006.CS1 maint: ref=harv (link)old-form url

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