''Neltuma caldenia'' (formerly ''Prosopis caldenia''), commonly known as the caldén, is a species of

flowering Flowers, also known as blooms and blossoms, are the reproductive structures of flowering plants ( angiosperms). Typically, they are structured in four circular levels, called whorls, around the end of a stalk. These whorls include: calyx, m ...

tree In botany, a tree is a perennial plant with an elongated stem, or trunk, usually supporting branches and leaves. In some usages, the definition of a tree may be narrower, e.g., including only woody plants with secondary growth, only ...

in the family

Fabaceae Fabaceae () or Leguminosae,International Code of Nomen ...

. 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.

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caldenia Plants described in 1939 Trees of Argentina Data deficient plants Taxonomy articles created by Polbot {{Mimosoideae-stub