Abstract
The taxonomic limits of Arabidella, Cuphonotus, and Lemphoria (Brassicaceae, Microlepidieae) are revised based on a critical evaluation of morphology in light of recent cytogenomic and molecular phylogenetic findings. As a result, Lemphoria is re-established to include two species previously placed in Cuphonotus and two in Arabidella. Lemphoria queenslandica is described as a new species, and the new combinations L. andraeana, L. eremigena, L. humistrata, and L. procumbens are proposed. Keys to distinguish Arabidella and Lemphoria species and an expanded generic description of Lemphoria are provided.
References
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<p>Tate, R. (1885) Descriptions of new species of South Australian plants. <em>Transactions and Proceedings and Report of the Royal Society of South Australia </em>7: 67–71.</p>
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<p>Zuo, S., Guo, X., Mandáková, T., Edginton, M., Al-Shehbaz, I.A. & Lysak, M.A. (2022) Genome diploidization associates with cladogenesis, trait disparity and plastid gene evolution in a crucifer tribe. <em>Plant Physiology. </em>[conditionally accepted] https://doi.org/10.1093/plphys/kiac268</p>
<p>Heenan, P.B., Goeke, D.F., Houliston, G.J. & Lysak, M.A. (2012) Phylogenetic analyses of ITS and <em>rbc</em>L DNA sequences for sixteen genera of Australian and New Zealand Brassicaceae result in the expansion of the tribe Microlepidieae. <em>Taxon </em>61: 970–979. https://doi.org/10.1002/tax.615004</p>
<p>Hewson, H.J. (1982) Brassicaceae. <em>In: </em>Briggs, B.G., Barlow, B.A., Eichler, H., Pedley, L., Ross, J., H., Symon, D.E. & Wilson, P.G. (Eds.) <em>Flora of Australia</em>, vol. 8. Australian Government Publishing Service, Canberra, 420 pp.</p>
<p>Hooker, J.D. (1867) <em>Handbook of the New Zealand flora: a systematic description of the native plants of New Zealand and the Chatham, Kermadec’s, Lord Auckland’s, Campbell’s and Macquarrie’s Islands, </em>part 2<em>. </em>Reeve & Co, London, pp. 393–798. https://doi.org/10.5962/bhl.title.132966</p>
<p>Mandáková, T., Joly, S., Krzywinski, M., Mummenhoff, K. & Lysak, M.A. (2010a) Fast diploidization in close mesopolyploid relatives of <em>Arabidopsis</em>. <em>The Plant Cell </em>22: 2277– 2290. https://doi.org/10.1105/tpc.110.074526</p>
<p>Mandáková, T., Heenan, P.B. & Lysak, M.A. (2010b) Island species radiation and karyotypic stasis in <em>Pachycladon </em>allopolyploids. <em>BMC Evolutionary Biology </em>10: 1–14. https://doi.org/10.1186/1471-2148-10-367</p>
<p>Mandáková, T., Pouch, M., Harmanova, K., Zhan, S.H., Mayrose, I. & Lysak, M.A. (2017) Multispeed genome diploidization and diversification after an ancient allopolyploidization. <em>Molecular Ecology </em>26: 6445–6462. https://doi.org/10.1111/mec.14379</p>
<p>Mueller, F.J.H.von (1853) Diagnoses et descriptions plantarum Novarum, quas in Nova Hollandia australi praecipua in regionibus interioribus. <em>Linnaea </em>25: 367–445.</p>
<p>Mueller, F.J.H. von (1861) <em>Fragmenta Phytographiae Australiae</em>, vol. 2. Government Printer, John Ferres, Melbourne, 199 pp.</p>
<p>Mueller, F.J.H. von (1878) <em>Fragmenta Phytographiae Australiae</em>, vol. 11. Government Printer, John Ferres, Melbourne, 151 pp.</p>
<p>Mueller, F.J.H. von (1885) Definitions of some new Australian plants. <em>The Southern Science Record and Magazine of Natural History, n. ser. </em>1: 49–50.</p>
<p>Schulz, O.E. (1924) Cruciferae-Sisymbrieae. <em>In</em>: Engler, A. (Ed.) <em>Pflanzenreich </em>IV. 105 (Heft 86). Verlag von Wilhelm Engelmann, Leipzig, 388 pp.</p>
<p>Schulz, O.E. (1933) Kurze Notizen über neue Gattungen, Sektionen und Arten der Cruciferen. <em>Botanische Jahrbücher fur Systematic Pflanzengeschichte und Pflanzengeographie </em>66: 91– 102.</p>
<p>Shaw, E.A. (1965) Taxonomic revision of some Australian endemic genera of Cruciferae. <em>Transactions of the Royal Society of South Australia </em>89: 145–253.</p>
<p>Shaw, E.A. (1974) Revisions of some genera of Cruciferae native to Australia. <em>Contributions from the Gray Herbarium of Harvard University </em>205: 147–162.</p>
<p>Tate, R. (1885) Descriptions of new species of South Australian plants. <em>Transactions and Proceedings and Report of the Royal Society of South Australia </em>7: 67–71.</p>
<p>Warwick, S.I., Mummenhoff, K., Sauder, C.A., Koch, M.A. & Al-Shehbaz, I.A. (2010) Closing the gaps: Phylogenetic relationships in the Brassicaceae based on DNA sequence data of nuclear ribosomal ITS. <em>Plant Systematics and Evolution </em>285: 209–232. https://doi.org/10.1007/s00606-010-0271-8</p>
<p>Zuo, S., Guo, X., Mandáková, T., Edginton, M., Al-Shehbaz, I.A. & Lysak, M.A. (2022) Genome diploidization associates with cladogenesis, trait disparity and plastid gene evolution in a crucifer tribe. <em>Plant Physiology. </em>[conditionally accepted] https://doi.org/10.1093/plphys/kiac268</p>