Peltogyne barbata (Leguminosae, Detarioideae), a new species endemic to lake margins and the banks of the Trombetas River in the state of Pará, northern Brazil, is described and illustrated. The new species is morphologically similar to P. densiflora Spruce ex Benth. in fruit shape and flower morphology, and both species occur in flooded areas (igapó). Peltogyne barbata can be distinguished by its partially tomentose ovary, the coloration of its adaxial sepals, and for having leaves present near the inflorescences pre-anthesis but branches without leaves post-anthesis. We provide an identification key to the species of the genus Peltogyne that occur in the Trombetas River region, as well as a line drawing, a distribution map and colour photographs of the new species in its native environment.

中文翻译：

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Peltogyne barbata（豆科，Detarioideae），巴西特罗贝塔斯河地区特有的新物种

描述和说明了Peltogyne barbata（豆科，Detarioideae），它是巴西北部帕拉州湖缘和特罗姆贝塔斯河河岸特有的新物种。该新物种在形态上类似于来自Benth的P. densiflora Spruce。在果实的形状和花的形态上，这两个物种都发生在洪水地区（igapó）。巴氏Peltogyne barbata的特征是其部分绒毛状子房，其萼片的着色和花期前花序前有叶但花后无叶的分枝。我们提供了鉴定Peltogyne属物种的关键 特罗姆贝塔斯河地区的野生生物，以及其原生环境中新物种的线条图，分布图和彩色照片。