Resumen

MORALES, MATÍAS  y  FORTUNATO, RENÉE H.. Mimosa chacoënsis (Leguminosae), new record for the flora of Argentina. Bol. Soc. Argent. Bot. [online]. 2018, vol.53, n.1, pp.1-10. ISSN 1851-2372.

Mimosa chacoënsis (Leguminosae), new record for the fora of Argentina. Mimosa chacoënsis, belonging to the section Habbasia series Rojasianae of genus Mimosa, is cited for the frst time to Argentina, in the Formosa province. This species, endemic of the Dry Chaco ecoregion, has been previously registered only from Bolivia and Paraguay. As a result of this work the number of known species of Mimosa from the Argentine Flora increases to 56. A detailed morphological description and observations, an illustration, a distribution map, and a discussion of the ecology of this species are presented. Likewise, an identification key to species of Mimosa section Habbasia in Argentina is included.

Palabras clave : Argentine Flora, Chacoan Flora, Mimosa section Habbasia, series Rojasianae..

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