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6 August 2019 A Common but Overlooked New Species in the Hyper-Diverse Genus Inga Mill. from the Northwestern Amazon
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Abstract

Inga kursarii is a new species collected in the terra firme forests of the northwestern Amazon, one of the regions with the highest tree species diversity in the world. According to morphological and phylogenetic analyses, the new species is morphologically similar and sister to Inga gracilifolia Ducke, but it can be distinguished by having 5–6 pairs of caducous leaflets, elliptical leaflets with acute apex and slightly asymmetrical base, spiked inflorescence, subsessile flowers, calyx tube with 4 lobes, tufts of hairs at the apex of calyx lobes, corolla tube with non-reflexed lobes, shorter staminal tubes, and capitate stigma. In addition, analyses of the chemical defensive profile (chemocoding) show that both taxa are chemically different, with I. kursarii having a chemistry based on gallocatechin/epigallocatechin gallates, and I. gracilifolia producing a series of dihydroflavonols. Finally, we present a table with a comparison of diagnostic characters that allows separation of the two species.

© Copyright 2019 by the American Society of Plant Taxonomists
Juan Ernesto Guevara Andino, Nigel C. A. Pitman, Consuelo Hernández, Renato Valencia, Phyllis D. Coley, Thomas A. Kursar, and María-José Endara "A Common but Overlooked New Species in the Hyper-Diverse Genus Inga Mill. from the Northwestern Amazon," Systematic Botany 44(3), 536-547, (6 August 2019). https://doi.org/10.1600/036364419X15620113920680
Published: 6 August 2019
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