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A new species of Collaea (Leguminosae, Papilionoideae) from South Brazil

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Abstract

The genus Collaea belongs to tribe Diocleae (Leguminosae subfamily Papilionoideae) and includes eight species from South America. A new species from South Brazil was discovered during a taxonomic revision of the genus and is formally described as Collaea caerulea. This species is found in a small area of Santa Catarina State, near the border with Paraná State, in regenerating secondary forests. It can be differentiated from other species from South Brazil by the combination of narrowly elliptical leaflets with an acuminate apex and bluish-lilac to bluish petals. The region where the species was discovered has only been recently explored by botanists and its natural vegetation is currently highly fragmented. Considering these factors, we propose that this species be classified as critically endangered. Here, we present a morphological description, geographical distribution, preliminary conservation assessment, and illustrations of the new species. We have also included an identification key for all Brazilian species of the genus.

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Acknowledgments

We thank the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior for granting a doctoral scholarship to the first author (CAPES process 88882.447846/2019-01), and CNPq for supporting LPQ (process 306736/2015-2). This study was financed in part by the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - Brasil (Capes) - Finance Code 001. We also thank the Programa de Pós Graduação em Botânica at Universidade Estadual de Feira de Santana-UEFS, for support given for trips and to the curators and employees of the Herbaria visited, by the welcome received during visits to analyze and study botanical specimens. We thank Carla Teixeira de Lima for the illustration, Juliana Rando and two anonymous reviewers for their valuable feedback on a previous version of the manuscript, and Editage (www.editage.com) and Gregory Plukenett for the English editing. Access to genetic heritage was authorized through SISGEN n° A2AD989.

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ACSO carried out the taxonomic study, prepared the map, and assessed the conservation status of the new species. PS collected the plant and provided information about its habitat. All authors contributed to the final version of the manuscript.

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Correspondence to Ana Carla da Silva Oliveira.

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We declare that there is no conflict of interest regarding the publication of this paper.

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da Silva Oliveira, A.C., Snak, C., Schwirkowski, P. et al. A new species of Collaea (Leguminosae, Papilionoideae) from South Brazil. Brittonia (2024). https://doi.org/10.1007/s12228-023-09772-w

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