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Issue: Vol. 728 No. 2: 12 Nov. 2025
Type: Article
Published: 2025-11-12
DOI: 10.11646/phytotaxa.728.2.10
Page range: 205-212
Abstract views: 106
PDF downloaded: 11

Uncovering hidden diversity in Phaseolinae (Leguminosae): the recircumscription of Phaseolus obliquifolius and its taxonomic placement in Ancistrotropis

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
Universidade Estadual do Oeste do Paraná, Rua Universitária, 1619, Jardim Universitário, 85819-110, Cascavel, PR, Brazil
Universidad Nacional Autónoma de México, Instituto de Biología, Departamento de Botánica, Apartado Postal 70-233 04510 Coyoacán, Ciudad de México, Mexico
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
Papilionoideae Phaseoleae Sigmoid-keel clade Fabaceae Eudicots

Abstract

Phaseolinae is a monophyletic subtribe, morphologically recognised by the bearded style enclosing the stigma. Despite recent advances in generic delimitation based on phylogenetic studies, the placement of some taxa remains uncertain. Based on detailed morphological analyses and a revision of herbarium material, we reassessed the taxonomic position of Phaseolus obliquifolius, historically synonymised under Condylostylis candida. Our data support its placement in Ancistrotropis, a Neotropical genus segregated from Vigna based on diagnostic characteristics. We formally propose the new combination A. obliquifolia, accompanied by comparisons with similar taxa, a morphological description, distribution data, and a preliminary conservation status assessment.

References

  1. Bachman, S., Moat, J., Hill, A.W., Torre, J. & Scott, B. (2011) Supporting red list threat assessments with GeoCAT: Geospatial conservation assessment tool. ZooKeys 150: 117–126. https://doi.org/10.3897/zookeys.150.2109
  2. Baudet, J.C. (1978) Prodrome d’une classification generique des Papilionaceae—Phaseoleae. Bulletin du Jardin Botanique National de Belgique/Bulletin van de Nationale Plantentuin van België 48: 183–220. https://doi.org/10.2307/3667924
  3. Beentje, H. (2014) The Kew plant glossary: an illustrated dictionary of plant terms. Royal Botanic Gardens, Kew, Richmond, Surrey, UK, 160 pp.
  4. Bentham, G. (1837) Commentationes de leguminosarum Generibus. Vindobonae: Typis J.P. Sollingeri, 82 pp.
  5. Delgado-Salinas, A., Thulin, M., Pasquet, R., Weeden, N. & Lavin, M. (2011) Vigna (Leguminosae) sensu lato: The names and identities of the American segregate genera. American Journal of Botany 98: 1694–1715. https://doi.org/10.3732/ajb.1100069
  6. Deshmukh, U.B., Shende, M.B., Reddy, E.S. & Mungole, A.J. (2023) Delgadoana, a new replacement name for Delgadoa F.S.Santos, Snak & L.P.Queiroz (Phaseolinae: Leguminosae). Feddes Repertorium 135: 76–77. https://doi.org/10.1002/fedr.202300023
  7. Kajita, T., Ohashi, H., Tateishi, Y., Bailey, C.D. & Doyle, J.J. (2001) rbcL and Legume Phylogeny, with Particular Reference to Phaseoleae, Millettieae, and Allies. Systematic Botany 26: 515–536. [https://www.jstor.org/stable/3093979]
  8. Hassler, E. (1923) Revisio specierum austro-americanarum generis Phaseoli L. Candollea 1: 417–472. https://doi.org/10.5169/seals-879066
  9. IUCN Standards and Petitions Committee (2024) Guidelines for Using the IUCN Red List Categories and Criteria, version 16. Prepared by the Standards and Petitions Committee. Available from: https://www.iucnredlist.org/resources/redlistguidelines (accessed 28 March 2025)
  10. Lackey, J.A. (1977a) A synopsis of Phaseoleae (Leguminosae: Papilionoideae). Ph.D. thesis. Iowa State University, Ames.
  11. Lackey, J.A. (1977b) A revised classification of the tribe Phaseoleae (Leguminosae: Papilionoideae), and its relation to canavanine distribution. Botanical Journal of the Linnean Society 74: 163–178. https://doi.org/10.1111/j.1095-8339.1977.tb01173.x
  12. LPWG [The Legume Phylogeny Working Group] (2017) A new subfamily classification of the Leguminosae based on a taxonomically comprehensive phylogeny. Taxon 66: 44–77. https://doi.org/10.12705/661.3
  13. Maréchal, R., Mascherpa, J. & Stainier, F. (1978) Etude taxonomique d’un groupe complexe d’espècies des genres Phaseolus et Vigna (Papilionoideae) sur la base de donées morphologiques et polliniques, traitées par l’analyse informatique. Boissiera 28: 1–273. Available from: https://www.e-periodica.ch (accessed 12 July 2025)
  14. Piper, C.V. (1926) Studies in American Phaseolinae. Contributions from the United States National Herbarium22 (9): 663–701.
  15. Radford, A.E., Dickison, W.C., Massey, J.R. & Bell, C.R. (1976) Vascular Plant Systematics. Harper and Row, New York, 104 pp.
  16. Santos, F.S., Snak, C., Ribeiro, C.L, Silva, C. & Queiroz, L.P. (2022) Phylogenetic analyses of Phaseolinae (Leguminosae) reveal a new genus endemic to limestone outcrops in Seasonally Dry Forests of Bahia, Brazil. Taxon 72: 64–77. https://doi.org/10.1002/tax.12819
  17. Savi, C.G. (1824) Continuazione della Memoria II sopra i generi Phaseolus et Dolichos. Nuovo Giornale dei letterati 8: 106–123.
  18. Turland, N.J., Wiersema, J.H., Barrie, F.R., Gandhi, K.N., Gravendyck, J., Greuter, W., Hawksworth, D.L., Herendeen, P.S., Klopper, R.R., Knapp, S., Kusber, W.-H., Li, D.-Z., May, T.W., Monro, A.M., Prado, J., Price, M.J., Smith, G.F. & Zamora Señoret, J.C. (2025) International Code of Nomenclature for algae, fungi, and plants (Madrid Code). Regnum Vegetabile 162. Chicago: University of Chicago Press. https://doi.org/10.7208/chicago/9780226839479.001.0001
  19. Vellozo, J.M. da C. (1825) Phaseolus candidus. In: Descriptionum plantarum praefectura Fluminensi sponte mascentium liber primus ad systema sexuale concinnatus. Fl. Flumin, pp. 311–312.
  20. Verdcourt, B. (1970) Studies in the Leguminosae-Papilionoideae for the “Flora of Tropical East Africa”: IV. Kew Bulletin 24: 507–569. https://doi.org/10.2307/4102859

How to Cite

Santos, F.D.S., Ribeiro, C.L., Snak, C., Delgado-Salinas, A. & Queiroz, L.P.D. (2025) Uncovering hidden diversity in Phaseolinae (Leguminosae): the recircumscription of Phaseolus obliquifolius and its taxonomic placement in Ancistrotropis. Phytotaxa 728 (2): 205–212. https://doi.org/10.11646/phytotaxa.728.2.10