Abstract
In the course of a taxonomic revision of the genus Piptolepis (Vernonieae, Asteraceae), it became clear that P. pseudomyrtus, until now considered a synonym of P. buxoides, should be re-established. It differs from P. buxoides by its habit, leaf shape, number of florets per head, cypsela shape, and length of pappus series. An updated morphological description, geographic distribution, illustration and conservation status of P. pseudomyrtus are provided, as well as a comparative discussion with P. buxoides.
References
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<p>Susanna, A., Baldwin, B.G., Bayer, R.J., Bonifacino, J.M., Garcia-Jacas, N., Keeley, S.C., Mandel, J.R., Ortiz, S., Robinson, H. & Stuessy, T.F. (2020) The classification of the Compositae: A tribute to Vicki Ann Funk (1947–2019). <em>Taxon</em> 69 (4): 807–814. https://doi.org/10.1002/tax.12235</p>
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<p>Baker, J.G. (1873) Compositae I. Vernoniaceae. <em>In</em>: Martius†, C.F.P. von & Eichler, A.W. (Eds.) <em>Flora brasiliensis</em>, vol. 6 (2). Fried. Fleischer, Münich, Vienna, Leipzig, pp. 5–180.</p>
<p>Beentje, H.J. (2010) <em>The Kew Plant Glossary: An Illustrated Dictionary of Plant Terms.</em> Royal Botanic Gardens, Richmond, 160 pp.</p>
<p>Bringel, J.R., Cândido, J.B. & Loeuille, B. (2019) A new species of <em>Piptolepis</em> (Lychnophorinae, Vernonieae, Asteraceae) from the Brazilian Central Plateau. <em>Phytotaxa</em> 399 (4): 271–278. https://doi.org/10.11646/phytotaxa.399.4.2</p>
<p>Cândido, J.B. & Loeuille, B. (2020) Two New Species of <em>Lychnophorella</em> (Vernonieae, Asteraceae) from the Chapada Diamantina, Bahia State, Brazil. <em>Systematic Botany</em> 45 (2): 379–386. https://doi.org/10.1600/036364420X15862837791320</p>
<p>Cândido, J.B. & Loeuille, B. (2021) Three new species of <em>Piptolepis</em> (Vernonieae, Asteraceae) from the Diamantina Plateau, Minas Gerais, Brazil. <em>Systematic Botany</em> 46: 493–503. https://doi.org/10.1600/036364421X16231782047578</p>
<p>Candolle, A.P. de (1836) <em>Prodromus Systematis Naturalis Regni Vegetabilis, </em>vol. 5. Treutel & Würtz, Paris, 706 pp.</p>
<p>Funk, V.A., Susanna, A., Stuessy, T.F. & Robinson, H. (2009) Classification of Compositae. <em>In</em>: Funk, V.A., Susanna, A., Stuessy, T.F. & Bayer, R.J. (Eds.) <em>Systematics, Evolution, and Biogeography of Compositae.</em> International Association for Plant Taxonomy, Viena, Austria, pp. 171–189.</p>
<p>Gomes, F.M.B. & Loeuille, B. (2021) Three new species of <em>Lychnocephalus</em> (Asteraceae: Vernonieae) from Serra do Cipó, Minas Gerais, Brazil. <em>Systematic Botany</em> 46: 476–485. https://doi.org/10.1600/036364421X16231782047587</p>
<p>Harris, J.G. & Harris, M.W. (2001) <em>Plant Identification Terminology. An Illustrated Glossary.</em> Spring Lake Publishing, Utah, pp. 107–202.</p>
<p>Hickey, L.J. (1973) Classification of the architecture of Dicotyledonous leaves. <em>American Journal of Botany</em> 60: 17–33.</p>
<p>IUCN (2021) <em>Guidelines for using the IUCN red list categories and criteria</em>, version 14. IUCN, Gland, Switzerland and Cambridge, UK.</p>
<p>Keeley, S.C., Cantley, J.T. & Gallaher, T.J. (2021) The “evil tribe” spreads across the land: A dated molecular phylogeny provides insight into dispersal, expansion, and biogeographic relationships within one of the largest tribes of the sunflower family (Vernonieae: Compositae). <em>American Journal of Botany</em> 108 (3): 1–15. https://doi.org/10.1002/ajb2.1614</p>
<p>Lessing, C.F. (1829) De synanthereis herbarii regii berolinensis dissertatio prima. Vernonieae. <em>Linnaea </em>4: 240–356.</p>
<p>Lessing, C.F. (1831) De synthereis dissertatio quarta. <em>Linnaea </em>6: 624–721.</p>
<p>Loeuille, B., Semir, J. & Pirani, J.R. (2019) A synopsis of the subtribe Lychnophorinae (Asteraceae: Vernonieae). <em>Phytotaxa</em> 398: 1–139. https://doi.org/10.11646/phytotaxa.398.1.1</p>
<p>Loeuille, B., Semir, J., Hind, D.J.N. & Pirani, J.R. (2012) Three new species of <em>Piptolepis </em>(Compositae: Vernonieae) from Minas Gerais, Brazil. <em>Kew Bulletin </em>67: 11–18.</p>
<p>Marques, D., Quaresma, A.S., Meyer, P.B. & Nakajima, J. (2021) Flowers to Òsanyìn: <em>Lychnophora osanyiniana</em> (Asteraceae: Vernonieae) a new “arnica da serra” from Minas Gerais, Brazil. <em>Phytotaxa</em> 491 (1): 57–64. https://doi.org/10.11646/phytotaxa.491.1.6</p>
<p>Marques, D., Via do Pico, G.M. & Nakajima, J.N. (2018) A New Species of <em>Lychnophora</em> Mart. (Vernonieae: Asteraceae) from Minas Gerais State, Brazil. <em>Systematic Botany</em> 43 (4): 1051–1058. https://www.bioone.org/doi/full/10.1600/036364418X697715</p>
<p>Panero, J.L. & Crozier, B.S. (2016) Macroevolutionary dynamics in the early diversification of Asteraceae. <em>Molecular Phylogenetics and Evolution</em> 99: 116–132. https://dx.doi.org/10.1016/j.ympev.2016.03.007</p>
<p>QGIS Development Team (2018) <em>QGIS Geographic Information System</em>. Open-Source Geospatial Foundation Project. Available from: https://qgis.osgeo.org (accessed 28 May 2021)</p>
<p>Reflora - Herbário Virtual (2021) Available from: http://reflora.jbrj.gov.br/reflora/herbarioVirtual/ (accessed 26 May 2021)</p>
<p>Robinson, H. (2007) Vernonieae. <em>In</em>: Kadereit, J. & Jeffrey, C. (Eds.) <em>The Families and Genera of Vascular Plants</em>, vol. 8: Asterales. Springer, Berlin, Heidelberg, New York, pp. 149–174.</p>
<p>Roque, N., Nakajima, J., Heiden, G., Monge, M., Ritter, M.R., Loeuille, B.F.P., Christ, A.L., Rebouças, N.C., Castro, M.S., Saavedra, M.M., Teles, A.M., Gandara, A., Marques, D., Bringel Jr., J.B.A., Angulo, M.B., Santos, J.U.M.D., Souza-Buturi, F.O., Alves, M., Sancho, G., Reis-Silva, G.A., Volet, D.P., Hattori, E.K.O., Plos, A., Simão-Bianchini, R., Rivera, V.L., Magenta, M.A.G., Silva, G.H.L., Abreu, V.H.R., Grossi, M.A., Amorim, V.O., Schneider, A.A., Carneiro, C.R., Borges, R.A.X., Siniscalchi, C.M., Bueno, V.R., Via do Pico, G.M., Almeida, G.S.S., Freitas, F.S., Deble, L.P., Moreira, G.L., Contro, F.L., Gutiérrez, D.G., Souza-Souza, R.M.B., Viera Barreto, J.N., Soares, P.N., Quaresma, A.S., Picanço, W.L., Fernandes, F., Mondin, C.A., Salgado, V.G., Kilipper, J.T., Farco, G.E., Ribeiro, R.N., Walter, B.M.T., Lorencini, T.S., Fernandes, A.C., Silva, L.N., Barcelos, L.B., Barbosa, M.L., Bautista, H.P., Casas, J.C., Dematteis, M., Ferreira, S.C., Hiriart, F.D., Moraes, M.D. & Semir, J. (2020) <em>Asteraceae in Flora do Brasil 2020.</em> Jardim Botânico do Rio de Janeiro. Available from: http://floradobrasil.jbrj.gov.br/reflora/floradobrasil/FB55 (accessed 24 May 2021)</p>
<p>Saint-Hilaire, A.F.C.P. de (1833) <em>Voyage dans le district des diamans et sur le littoral du Brésil</em>, vol. 1. Librairie Gide, Paris, 402 pp.</p>
<p>Schultz-Bipontinus, C.H. (1863) [1864] Lychnophora Martius! und einige benachbarte Gattungen<em>.</em> <em>Erster Jahresbericht der Pollichia, eines Naturwissenschaftlichen Vereins der bayerischen Pfalz </em>20/21: 321–439.</p>
<p>Small, J. (1919) The origin and development of the Compositae. <em>New Phytologist</em> 18: 129–176.</p>
<p>SpeciesLink (2021) Available from: http://www.splink.org.br (accessed 23 march 2021)</p>
<p>Susanna, A., Baldwin, B.G., Bayer, R.J., Bonifacino, J.M., Garcia-Jacas, N., Keeley, S.C., Mandel, J.R., Ortiz, S., Robinson, H. & Stuessy, T.F. (2020) The classification of the Compositae: A tribute to Vicki Ann Funk (1947–2019). <em>Taxon</em> 69 (4): 807–814. https://doi.org/10.1002/tax.12235</p>
<p>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., Monro, A.M., Prado, J., Price, M.J. & Smith, G. (2018) <em>International Code of Nomenclature for algae, fungi, and plants (Shenzhen Code) adopted by the Nineteenth International Botanical Congress Shenzhen, China, July 2017. </em>Koeltz Botanical Books.</p>