Skip to main content Skip to main navigation menu Skip to site footer
Article
Published: 2021-11-19

New combinations and re-lectotypification in the genus Imbralyx (Fabaceae: Millettieae)

Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, P. R. China
Fordia lectotypification Millettia Millettieae new combination Eudicots

Abstract

Imbralyx R. Geesink (Fabaceae: Millettieae) was long recognized as part of the genus Fordia Hemsl. However, Imbralyx has a unique characteristic combination of characters within Millettieae and it can be readily distinguished from Fordia and other genera of the tribe, including transitional inflorescences to pseudoracemes, distinctly imbricate calyx lobes in buds, spindle-shaped flowerbuds, white flowers, distinct hypanthium, monadelphous stamens, and glabrous leaflets with raised nervation on both surfaces. Recent molecular evidence also suggested that Imbralyx should be treated as a genus distinct from Fordia, because the two genera were placed respectively in two different main subclades within the core Millettieae, i.e. Canavanine group and Non-canavanie group, which is consistent with previous chemical evidence. So far the genus Imbralyx comprises nine species and two varieties from Asia, but only one epithet has been definitely associated with the generic name. Therefore, ten new combinations in Imbralyx are proposed in this paper. Additionally, lectotypes are re-designated here for the two basionyms Millettia albiflora Prain and M. unifoliata Prain.

References

  1. Baker, J.G. (1876) Leguminosae. In: Hooker, J.D. (ed.) Flora British India, London, 2: 56‒306.

  2. Buijsen, J.R.M. (1989) Revision of the genus Fordia (Papilionaceae: Millettieae). Blumea 33: 239–261.

  3. Craib, W.G. (1928) Florae Siamensis Enumeratio. Vol. 1 part 3. Siam Society, Bangkok, pp. 377–383.

  4. Dasuki, U.A. & Schot, A.M. (1991) Taxonomy of Fordia Hemsley (Papilionaceae: Millettieae). Blumea 36: 191–204.

  5. de Queiroz, L.P., Pastore, J.F.B., Cardoso, D., Snak, C., Lima, A.L.D.C., Gagnon, E., Vatanparast, M., Holland, A.E. & Egan, A.N. (2015) A multilocus phylogenetic analysis reveals the monophyly of a recircumscribed papilionoid legume tribe Diocleae with well-supported generic relationships. Molecular Phylogenetics Evolution 90: 1–19.  http://dx.doi.org/10.1016/j.ympev.2015.04.016

  6. Dunn, S.T. (1911) Some additions to the Leguminous genus Fordia. Bulletin of Miscellaneous Information (Royal Botanic Gardens, Kew) 1911: 62–64. https://doi.org/10.2307/4119552

  7. Dunn, S.T. (1912) A revision of the genus Millettia Wight et Arn. Journal of the Linnean Society of London, Botany 41: 123–243. https://doi.org/10.1111/j.1095-8339.1912.tb02482.x

  8. Dunn, S.T. (1914) Decades Kewenses: LXXX. Bulletin of Miscellaneous Information, Royal Gardens, Kew 1914 (6): 205–209. https://doi.org/10.2307/4119502

  9. Evans, S.V., Fellows, L.E. & Bell, E.A. (1985) Distribution and systematic significance of basic non-protein amino acids and amines in the Tephrosieae. Biochemical Systematics and Ecology 13 (3): 271–302.  https://doi.org/10.1016/0305-1978(85)90038-9

  10. Forbes, F.B. & Hemsley, W.B. (1886) An enumeration of all the plants known from China Proper, Formosa, Hainan, Corea, the Luchu Archipelago, and the island of Hongkong, together with their distribution and synonymy. Part II. Journal of the Linnean Society of London, Botany 23: 81–162. https://doi.org/10.1111/j.1095-8339.1886.tb00531.x

  11. Gagnepain, F. (1913) Especes nouvelles de Millettia. Notulae Systematicae 2: 350–367.

  12. Geesink, R. (1984) Scala Millettiearum. A survey of the genera of the tribe Millettieae (Legum.-Pap.) with methodological considerations. Leiden Botanical Series 8. E. J. Brill & Leiden University Press, Leiden, 131 pp. https://doi.org/10.2307/2806098

  13. Hu, J.M., Lavin, M., Wojciechowski, M.F. & Sanderson, M.J. (2000) Phylogenetic systematics of the tribe Millettieae (Leguminosae) based on chloroplast trnK/matK sequences and its implications for evolutionary patterns in Papilionoideae. American Journal of Botany 87: 418–430. https://doi.org/10.2307/2656638

  14. Hu, J.M., Lavin, M., Wojciechowski, M.F. & Sanderson, M.J. (2002) Phylogenetic analysis of nuclear ribosomal ITS/5.8S sequences in the tribe Millettieae (Fabaceae): Poecilanthe-Cyclolobium, the core Millettieae, and the Callerya group. Systematic Botany 27: 722–733

  15. 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.

  16. King, G. (1897: 93) Material for a Flora of the Malayan Peninsula. Journal of the Asiatic Society of Bengal 66: 1–346.

  17. Kurz, S. (1873) New Burmese Plants. Part II. Journal of the Asiatic Society of Bengal. Part 2. Natural History 42: 59–110.

  18. Lôc, P.K. & Vidal, J.E. (2001) Legumineuses-Papilionoideae-Millettieae. In: Morat, P. (Ed.) Flore du Cambodge, du Laos et du Vietnam 30. Museum National D’histoire Naturelle, Paris, 191 pp. https://doi.org/10.1111/j.1756-1051.2001.tb01334.x

  19. Lock, J.M. & Ford, C.S. (2004) Legumes of Malesia: a check-list. Royal Botanical Gardens, Kew, 253 pp.

  20. LPWG (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

  21. Mattapha, S. (2017) The Systematics of Tribe Millettieae (Leguminosae-Papilionoideae). The University of Reading. Unpublished PhD thesis. 227 pp.

  22. Mattapha, S., Veesommai, A., Patthum, S. & Chantaranothai, P. (2019a) Two new records and lectotypified taxa of the genus Millettia (Fabaceae: Millettieae) for Thailand. Thai Forest Bulletin (Botany) 47 (1): 5‒10.  https://doi.org/10.20531/tfb.2019.47.1.02

  23. Mattapha, S., Forest, F., Hawkins, J.A., Suddee, S., Tetsana, N. & Chantaranothai, P. (2019b) Three new species, lectotypifications and synonymisations in Millettia (Fabaceae: Faboideae) for Thailand. Thai Forest Bulletin (Botany) 47: 171‒183. https://doi.org/10.20531/tfb.2019.47.2.07

  24. Miquel, F.A.W. (1855) Flora van Nederlandsch Indie. Vol. 1. Fleischer, Leipzig. 1116 pp.

  25. Oyebanji, O., Zhang, R., Chen, S.Y. & Yi, T.S. (2020) New insights into the plastome evolution of the Millettioid/Phaseoloid Clade (Papilionoideae, Leguminosae). Frontiers in Plant Science 11: 151. https://doi.org/10.3389/fpls.2020.00151

  26. Polhill, R.M. (1971) Some observations on generic limits in Dalbergieae-Lonchocarpineae Benth. (Leguminosae). Kew Bulletin 25 (2): 259–273. https://doi.org/10.2307/4103221

  27. Qian, Y.Y. (2001) Millettia pendula Benth. (Papilionaceae), a new record to China. Acta Phytotaxonomica Sinica 39 (5): 464–465.

  28. Schot, A.M. (1991) Phylogenetic relations and historical biogeography of Fordia and Imbralyx (Papilionoideae: Millettieae). Blumea 36: 205–234.

  29. Schrire, B.D. (2005) Tribe Millettieae. In: Lewis, G., Schrire, B., Mackinder, B. & Lock, M. (Eds.) Legumes of the World. Royal Botanical Gardens, Kew, pp. 367–387.

  30. Sun, H. (2006) Trib. Tephrosieae (Benth.) Hutch. In: Peng, H. (Ed.) Flora Yunnanica. Tomus 10. Science Press, Beijing, pp. 391–434.

  31. Turland, N.J., Wiersema, J.H., Barrie, F.R., Greuter, W., Hawksworth, D.L., Herendeen, P.S., Knapp, S., Kusber, W.-H., Li, D.-Z., Marhold, K., May, T.W., McNeill, J., Monro, A.M., Prado, J., Price, M.J. & Smith, G.F. (2018) International Code of Nomenclature for algae, fungi, and plants (Shenzhen Code) adopted by the Nineteenth International Botanical Congress Shenzhen, China, July 2017. Regnum Vegetabile 159. Koeltz Botanical Books, Glashütten, 254 pp. https://doi.org/10.12705/Code.2018

  32. WCVP (2021) World Checklist of Vascular Plants, version 2.0. Facilitated by the Royal Botanic Gardens, Kew. Published on the Internet: http://wcvp.science.kew.org (accessed 1 July 2021)

  33. Wei, Z. & Pedley, L. (2010) Millettia Wight & Arnott. In: Wu, Z.Y., Raven, P.H. & Hong, D.Y. (Eds.) Flora of China 10. Science Press, Beijing and Missouri Botanical Garden Press, St. Louis, pp. 176–181.

  34. Whitmore, T.C. (1969) Notes on the systematy of Malayan Phanerogams III. Legumionsae. Gardens’ Bulletin Singapore 24: 4–6.

  35. Whitmore, T.C. (1971) Notes on the systematy of Malayan phanerogams: IX. Leguminosae (b). Federation Museums Journal 13: 136–137.

  36. Wight, R. & Arnott, G.A.W. (1834) Prodromus Florae Peninsulae Indiae Orientalis 1. Parbury, Allen & Co., London, 480 pp. https://doi.org/10.5962/bhl.title.252

  37. Wojciechowski, M.F., Lavin, M. & Sanderson, M.J. (2004) A phylogeny of legumes (Leguminosae) based on analysis of the plastid matK gene resolves many well-supported subclades within the family. American Journal of Botany 91 (11): 1845–1861. http://dx.doi.org/10.3732/ajb.91.11.1846