Arturo Eduardo Burkart

Geoffroea decorticans, the chañar, kumbaru, or Chilean palo verde (green wood), is a small deciduous tree, up to 8 meters (25 ft) tall that inhabits most arid forests (montes or espinales) of southern South America. The chañar is cold and drought deciduous; it loses its leaves in winter, and possibly in summer if conditions get too dry. It is natural to Bolivia, Chile, Argentina, also present in Paraguay and southern Peru. It is a very characteristic tree in local culture and folk because of its vivid visual presence, propagation, and ancient ethnomedical uses.

Neltuma caldenia (formerly Prosopis caldenia), commonly known as the caldén, is a species of flowering tree in the family Fabaceae. The tree is endemic to subtropical regions of Argentina. It thrives in sandy and arid soil and resists drought, developing an extremely deep root system. The leaves of this tree are pinnately compound, deciduous, alternate and small. Its foliage is tortuous, with conical spines arranged in pairs at the nodes.

Inga saltensis is a species of plant in the family Fabaceae. It is found in Argentina and Bolivia. It is threatened by habitat loss.

Prosopis koelziana is a species of plant in the genus Prosopis. It is found in the Arabian Peninsula, Iraq and Iran. It was once widespread in its natural habitats, concentrated in river courses and desert streams, in wet agricultural lands in oases, around some lakes, swamps and salt marshes, as well as in some dry sand dunes. However, its presence is now limited to some of its historical sites only and it has become extinct from most of its original habitats due to agricultural and urban expansion in its ancient forests, overgrazing by livestock, and the use of its trees as a source of

Prosopidastrum is a genus of flowering plants in the family Fabaceae. It includes seven species of shrubs native to the subtropical Americas, with six species native to Bolivia and Argentina, and one (Prosopidastrum mexicanum) native to Baja California. They grow in subtropical xerophytic bushland, thicket, grassland, and semi-desert. It belongs to the mimosoid clade of the subfamily Caesalpinioideae.

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Piptadeniopsis lomentifera is a species of flowering plant in the legume family, Fabaceae. It is a tree native to southwestern Bolivia and Paraguay. It is the sole species in genus Piptadeniopsis. It belongs to the mimosoid clade of the subfamily Caesalpinioideae.

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Adesmia aromatica is an endemic perennial shrub found in Chile.

Adesmia arenicola is an endemic perennial shrub found in Argentina.