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Issue: Vol. 697 No. 1: 10 Apr. 2025
Type: Article
Published: 2025-04-10
DOI: 10.11646/phytotaxa.697.1.5
Page range: 83-96
Abstract views: 128
PDF downloaded: 10

Morphological data and ecological niche modelling support the inclusion of Phaseolus rubidus in Macroptilium: Implications for Papilionoid Lineages in the Cerrado and Paraná Forests

Programa de Pós-Graduação em Botânica, Universidade Estadual de Feira de Santana, Av. Transnordestina s/n, Novo Horizonte, 44036-900, Feira de Santana, BA, Brazil
Programa de Pós-Graduação em Botânica, Universidade Estadual de Feira de Santana, Av. Transnordestina s/n, Novo Horizonte, 44036-900, Feira de Santana, BA, Brazil
Centro de Pesquisa e Análises Agronômicas e Veterinárias - SBS Laboratório, Rua Rafael Picoli 972, Centro, Cascavel 85812-180, PR, Brazil
Programa de Pós-Graduação em Botânica, Universidade Estadual de Feira de Santana, Av. Transnordestina s/n, Novo Horizonte, 44036-900, Feira de Santana, BA, Brazil
Eudicots Phaseoleae Phaseolinae Phaseolus SDTFW

Abstract

The identity of Phaseolus rubidus has been controversial due to its similarity to Macroptilium erythroloma and M. monophyllum. Based on niche modelling and a detailed morphological analysis, we propose that Phaseolus rubidus should be reinstated as a distinct species and classified within Macroptilium. Macroptilium rubidum can be distinguished from other species by the combination of erect habit, generally reddish velutinous indumentum, leaves with one to three leaflets, leaflets ovate, never lobed, and peduncular bracts at the base of the inflorescence and floral bracts that are equal to or smaller than the calyx. It occurs in the northeast of Argentina, southern Brazil, and Paraguay, within the Paraná Forest province, having an ecological niche restricted to the open fields of temperate and humid environments in this biogeographical province.

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How to Cite

Ribeiro, C.L., Da Silva Santos, F., Snak, C. & Paganucci De Queiroz, L. (2025) Morphological data and ecological niche modelling support the inclusion of Phaseolus rubidus in Macroptilium: Implications for Papilionoid Lineages in the Cerrado and Paraná Forests. Phytotaxa 697 (1): 83–96. https://doi.org/10.11646/phytotaxa.697.1.5