Abstract

The Tribe Wisterieae (Zhu 1994), founded on the single genus Wisteria, is emended and recircumscribed based on morphology and data from nuclear ITS and ndhJ-trnF, matK and rbcL chloroplast DNA sequences. This newly enlarged tribe comprises 36 species and 9 infraspecific taxa within 13 described genera. Six genera are new, two are reinstated and five were previously placed in Tribe Millettieae. The genus Adinobotrys is also reinstated comprising two species including the new combination A.vastus. Other reinstated genera include Whitfordiodendron, with four species, and Padbruggea, with three species, including the reinstatement of P.filipes and the new combination P.filipesvar.tomentosa. The existing genera Afgekia, Callerya, Endosamara (with the new combination E.racemosavar.pallida), Sarcodum and Wisteria, with the new combinations W.frutescenssubsp.macrostachya are evaluated. The new genera comprise three Australasian species in Austrocallerya: A.australis, A.megasperma and A.pilipes; Wisteriopsis with five species from east Asia has six new combinations: W.japonica, W.kiangsiensis, W.championii, W.eurybotrya, W.reticulata and W.reticulatavar.stenophylla. Two species comprise the new Thai genus Kanburia: K.tenasserimensis and K.chlorantha. Nanhaia comprises the two species: N.fordii and N.speciosa and the monotypic genera Sigmoidala and Serawaia are based respectively on the species S.kityana and S.strobilifera. Lectotypes are designated for the names Adinobotrysfilipes, A.myrianthus, Millettiabonatiana, Millettiabracteosa, Millettiachampionii, Millettiacinerea, Millettiadielsiana, Millettiakityana, M.maingayi, Millettianitida, Millettiaoocarpa, Millettiapurpurea, M.reticulata, M.reticulatavar.stenophylla, Padbruggeadasyphylla, Pterocarpusaustralis, Robiniaracemosa, Whitfordiodendronscandens, W.sumatranum and Wisteriapallida. A neotype is designated for the name Millettialeiogyna.

Highlights

  • The Tribe Millettieae was first described by Miquel (1855: 137), based on the type genus Millettia Wight & Arn. (Wight and Arnott 1834: 263)

  • In the plastid analyses (Suppl. material 1: Figs S3, S4) the main difference to Fig. 1 is Serawaia grouping with Clades D + E with no support in the Bayesian inference (BI) analysis - and with Clades C + D + E, with no support, in the Maximum Likelihood (ML) analysis

  • Our results reveal that Afgekia filipes belongs in our reinstated genus Padbruggea and the transfer back is made in this paper

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Summary

Introduction

The Tribe Millettieae was first described by Miquel (1855: 137), based on the type genus Millettia Wight & Arn. (Wight and Arnott 1834: 263). The Tribe Millettieae was first described by Miquel (1855: 137), based on the type genus Millettia Wight & Arn. (Wight and Arnott 1834: 263) This genus of six species was characterised largely by the pods of the southern Indian type species M. rubiginosa Wight & Arn. Miquel emphasised the compressed nature of the pods as a significant distinguishing character and his tribal description very loosely defined the new Tribe Millettieae, which included eight genera: Brachypterum (Wight & Arn.) Benth., Derris Lour., Pongamia Adans., Padbruggea Miq., Aganope Miq., Millettia, Otosema Benth. Distinguished from the genera Pongamia Adans. and Dalbergia L.f. by the legume being compressed around the seeds and by the fruit’s thick woody texture (Wight and Arnott 1834: 263). Dunn (1912a) in his revision of Millettia placed the genus in Tribe Galegeae (Bronn) Torr. & Gray subtribe Tephrosiinae Benth. (as Subtribe “Tephrosieae”). Geesink (1984: 3) described Tribe Millettieae with the characters: Inflorescence of panicles, pseudopanicles or derived pseudopanicles; wing petals adherent to the keel; keel petals usually valvately connate; pod dehiscent or indehiscent; seed chamber mostly absent; seeds 1 or few; and without any uniquely defining character”. Geesink (1984: 4) admitted that “the contents of this chapter [Delimitations of Millettieae and related tribes] will be disappointing for those who expect a final answer to the questions suggested by the title”

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