Abarema diamantina

Abarema diamantina is a leguminous tree in the family Fabaceae, order Fabales, belonging to the mimosoid clade within the subfamily Caesalpinioideae. The specific epithet diamantina refers to the Diamantina region of Minas Gerais state in Brazil, an area renowned for its extraordinary plant diversity, high endemism, and the unique rocky campo rupestre (rupestrian grassland) and cerrado vegetation types that characterize the region. The Diamantina Plateau, also known as the Espinhaço Range, harbors thousands of endemic plant species adapted to its nutrient-poor, quartzite soils, seasonal drought, and high solar radiation. Abarema diamantina, as a species named from this region, is likely endemic to or primarily distributed within the Diamantina area, representing one of the many botanically significant species documented from this global biodiversity hotspot. As a member of the mimosoid legumes, Abarema diamantina likely produces bipinnately compound leaves with numerous small leaflets, and globose to elongated flower heads composed of small flowers with conspicuous stamens forming a powder-puff inflorescence. The pods of Abarema species are typically flattened, coiled, or twisted, splitting at maturity to expose seeds often decorated with a colorful aril that attracts animal dispersers. The tree likely grows in gallery forest, cerrado woodland, or transitional vegetation communities within the Diamantina region, where it benefits from proximity to watercourses or deeper soils that buffer seasonal drought stress. Like all Fabaceae, it likely forms nitrogen-fixing root nodule associations.