title: A molecular phylogeny reveals the Cuban enigmatic genus Behaimia as a new piece in the Brongniartieae puzzle of papilionoid legumes.
abstract: The papilionoid legume tribe Brongniartieae comprises a collection of 15 genera with disparate morphologies that were previously positioned in at least four remotely related tribes. The Brongniartieae displays a wide geographical disjunction between Australia and the New World and previous phylogenetic studies had provided conflicting results about the relationships between the American and Australian genera. We carry out phylogenetic analyses of (1) a plastid matK dataset extensively sampled across legumes to solve the enigmatic relationship of the Cuban-endemic monospecific genus Behaimia; and (2) multilocus datasets with focus on all genera ever referred to Brongniartieae. These analyses resulted in a well-resolved and strongly-supported phylogenetic tree of the Brongniartieae. The monophyly of all American genera of Brongniartieae is strongly supported. The doubtful position of the Australian genus Plagiocarpus is resolved within a clade comprising all Australian genera. Behaimia has been traditionally classified in tribe Millettieae, but our new molecular data and re-assessment of morphological traits have resolved the genus within the early-branching papilionoid tribe Brongniartieae. Characters including the pinnately multifoliolate (vs. unifoliolate) leaves, a sessile (vs. stipitate) ovary, and an indehiscent or late dehiscent one-seeded pod distinguish Behaimia from its closer relatives, the South American genera Cyclolobium and Limadendron.
authors.affiliation: Departamento de Ciências Biológicas, Universidade Estadual de Feira de Santana, Av. Transnordestina, s/n, Novo Horizonte, 44036-900 Feira de Santana, Bahia, Brazil. Electronic address: luciano.paganucci@gmail.com.
authors.forename: Luciano Paganucci de
authors.initials: LP
authors.lastname: Queiroz
authors.affiliation: Programa de Pós-Graduação em Sistemática e Evolução (PPGSE), Departamento de Botânica, Ecologia e Zoologia, Universidade Federal do Rio Grande do Norte, Campus Universitário Lagoa Nova, 59072-970 Natal, Rio Grande do Norte, Brazil.
authors.forename: Wallace
authors.initials: W
authors.lastname: São-Mateus
authors.affiliation: Departamento de Botánica, Instituto de Biología, Universidad Nacional Autónoma de México, Apartado Postal 70-233, 04510 Coyoacán, Cd. México, Mexico.
authors.forename: Alfonso
authors.initials: A
authors.lastname: Delgado-Salinas
authors.affiliation: Institute of Systematic Botany, The New York Botanical Garden, 2900 Southern Blvd., Bronx, NY 10458-5126, USA.
authors.forename: Benjamin M
authors.initials: BM
authors.lastname: Torke
authors.affiliation: Comparative Plant and Fungal Biology Department, Royal Botanic Gardens, Kew, Richmond, Surrey TW9 3AB, UK.
authors.forename: Gwilym P
authors.initials: GP
authors.lastname: Lewis
authors.affiliation: Centro de Educación Ambiental e Investigación Sierra de Huautla, Universidad Autónoma del Estado de Morelos, Mexico.
authors.forename: Óscar
authors.initials: Ó
authors.lastname: Dorado
authors.affiliation: School of Veterinary and Life Sciences, Murdoch University, Murdoch, Western Australia 6150, Australia.
authors.forename: Julie K
authors.initials: JK
authors.lastname: Ardley
authors.affiliation: School of Life Sciences, Arizona State University, Tempe, AZ 85287-4501, USA.
authors.forename: Martin F
authors.initials: MF
authors.lastname: Wojciechowski
authors.affiliation: National Institute of Science and Technology in Interdisciplinary and Transdisciplinary Studies in Ecology and Evolution (INCT IN-TREE), Instituto de Biologia, Universidade Federal da Bahia, Rua Barão de Jeremoabo, s.n., Ondina, 40170-115 Salvador, Bahia, Brazil.
authors.forename: Domingos
authors.initials: D
authors.lastname: Cardoso
mesh_terms: D001499:Bayes Theorem; D002467:Cell Nucleus / Q000235:genetics; D003462:Cuba; D007887:Fabaceae / Q000145:classification*; D010802:Phylogeny; D018087:Plastids / Q000235:genetics
keywords: Brongniartia; Genistoids s.l. clade; Papilionoideae; Plagiocarpus