Hemipogon trilobatus sp. nov. (Apocynaceae: Asclepiadoideae), a new microendemic from Chapada dos Veadeiros, Central Brazil

  • Cássia Bitencourt Universidade Estadual de Feira de Santana, Programa de Pós-Graduação em Botânica, Av. Transnordestina, s/n, Novo Horizonte, 44036-900, Feira de Santana, Bahia, Brazil https://orcid.org/0000-0001-9141-2323
  • Amanda P.B. Santos Universidade Estadual de Feira de Santana, Programa de Pós-Graduação em Botânica, Av. Transnordestina, s/n, Novo Horizonte, 44036-900, Feira de Santana, Bahia, Brazil https://orcid.org/0000-0001-8123-8579
  • Cristiane Snak Universidade Estadual de Feira de Santana, Programa de Pós-Graduação em Botânica, Av. Transnordestina, s/n, Novo Horizonte, 44036-900, Feira de Santana, Bahia, Brazil https://orcid.org/0000-0002-7728-6487
  • Alessandro Rapini Universidade Estadual de Feira de Santana, Programa de Pós-Graduação em Botânica, Av. Transnordestina, s/n, Novo Horizonte, 44036-900, Feira de Santana, Bahia, Brazil https://orcid.org/0000-0002-8758-9326
DOI: https://doi.org/10.5852/ejt.2020.729.1185
Keywords: Cerrado, Metastelmatinae, Neotropics, savannah, taxonomy

Abstract

Hemipogon s. str. (Apocynaceae: Asclepiadoideae) currently consists of three species sharing an erect herbaceous habit, narrow leaves and corona-less flowers with urceolate, internally bearded corolla, that are mainly distributed in savannahs of the Cerrado biodiversity hotspot, South America. Here, we describe and illustrate a new species of Hemipogon, H. trilobatus Bitencourt & Rapini sp. nov., from an open savannah in Chapada dos Veadeiros, Central Brazil. Hemipogon trilobatus sp. nov. differs from the other species of the genus mainly by the presence of a reduced staminal corona with 3-lobed lobes, but also by opposite leaves and triangular anthers. Distribution and habitat data, as well as a key and a comparative table to distinguish the four species currently accepted in Hemipogon s. str., are provided. Based on criteria B2ab(i,ii,iii,iv) of the International Union for Conservation of Nature (IUCN), the species is provisionally assessed as Critically Endangered.

References

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

Bebber D.P., Carine M.A., Wood J.R.I., Wortley A.H., Harris D.J., Prance G.T., Davidse G., Paige J., Pennington T.D., Robson N.K.B. & Scotland R.W. 2010. Herbaria are a major frontier for species discovery. Proceedings of the National Academy of Sciences of the United States of America 107: 22169–22171. https://doi.org/10.1073/pnas.1011841108

Beentje H. 2016. The Kew Plant Glossary – An Illustrated Dictionary of Plant Terms. Royal Botanic Gardens, Kew.

Beuchle R., Grecchi R.C., Shimabukuro Y.E., Seliger R., Eva H.D., Sano E. & Achard F. 2015. Land cover changes in the Brazilian Cerrado and Caatinga biomes from 1990 to 2010 based on a systematic remote sensing sampling approach. Applied Geography 58: 116–127. https://doi.org/10.1016/j.apgeog.2015.01.017

Bitencourt C. 2019. Explorando a diversificação das Apocynaceae na era da filogenômica, com ênfase nas espécies de Hemipogon. PhD thesis, Universidade Estadual de Feira de Santana, Brazil.

Bitencourt C., Fernandes M.F., Espírito Santo F.S. & Rapini A. 2020. Two new Critically Endangered species of Ditassa (Apocynaceae) from the threatened cangas of the Iron Quadrangle, Minas Gerais, Brazil. Plant Ecology and Evolution 153: 246–256. https://doi.org/10.5091/plecevo.2020.1669

Brach A.R. & Boufford D.E. 2011. Why are we still producing paper floras? Annals of the Missouri Botanical Garden 98: 297–300. https://doi.org/10.3417/2010035

Carvalho Jr O.A., Guimarães R.F., Souza Martins É. & Gomes R.A.T. 2015. Chapada dos Veadeiros: the highest landscapes in the Brazilian Central Plateau. In: Vieira B.C., Salgado A.A.R. & Santos L.J.C. (eds) Landscapes and Landforms of Brazil. Vol. 1: 221–230. Springer, Dordrecht. https://doi.org/10.1007/978-94-017-8023-0_20

Endress M.E., Meve U., Middleton D.J. & Liede-Schumann S. 2018. Apocynaceae. In: Kadereit J.W. & Bittrich V. (eds) Flowering plants. Eudicots. Apiales and Gentianales (except Rubiaceae), in Kubitzki K. (ed.) The Families and Genera of Vascular Plants. Vol. 15: 207–411. Springer, Cham. https://doi.org/10.1007/978-3-319-93605-5_3

Flora do Brasil. 2020. Jardim Botânico do Rio de Janeiro. Available from http://floradobrasil.jbrj.gov.br [accessed 10 Mar. 2018].

Fenker J., Domingos F.M.C.B., Tedeschi L.G., Rosauer D.F., Werneck F.P., Colli G.R., Ledo R.M.D., Fonseca E.M., Garda A.A., Tucker D., Sites Jr J.W., Breitman M.F., Soares F., Giugliano L.G. & Moritz C. 2020. Evolutionary history of Neotropical savannas geographically concentrates species, phylogenetic and functional diversity of lizards. Journal of Biogeography 46: 1130–1142. https://doi.org/10.1111/jbi.13800

Fontella-Pereira J., Santos R.G.P., Goes M.B. & Moral S.A.C. 2014. Notas taxonómicas sobre Hemipigon subgen. Astephanopsis y descripción de un nuevo género (Apocynaceae, Asclepiadoideae, Asclepiadeae, Metastelmatinae). Bonplandia 23: 25–31. https://doi.org/10.30972/bon.2311239

Fournier E.P.N. 1885. Asclepiadaceae. In: Martius C.F.P. & Eichler A.W. (eds) Flora Brasiliensis. Vol. 6, pt. 4: 189–332. Typographia Regia, Monachii.

Good R. 1952. An atlas of the Asclepiadaceae. New Phytologist 51: 198–209. https://doi.org/10.1111/j.1469-8137.1952.tb06126.x

IUCN. 2019. Guidelines for Using the IUCN Red List Categories and Criteria, Version 14. IUCN, Gland / Cambridge.

Joppa L.N., Roberts D.L. & Pimm S.L. 2010. How many species of flowering plants are there? Proceedings of the Royal Society Biological Sciences 278: 554–559. https://doi.org/10.1098/rspb.2010.1004

Myers N., Mittermeier R.A., Mittermeier C.G., Fonseca G.A.B. & Kent J. 2000. Biodiversity hotspots for conservation priorities. Nature 403: 853–858. https://doi.org/10.1038/35002501

Prance G.T. 2001. Discovering the plant world. Taxon 50: 345–359. https://doi.org/10.2307/1223885

Rapini A. 2002. Six new species of Ditassa R. Br. from the Espinhaço Range, Brazil, with notes on generic delimitation in Metastelmatinae (Apocynaceae-Asclepiadoideae). Kew Bulletin 57: 565–583. https://doi.org/10.2307/4110986

Rapini A. 2010. Revisitando as Asclepiadoideae (Apocynaceae) da Cadeia do Espinhaço. Boletim de Botânica da Universidade de São Paulo 28: 97–123. https://doi.org/10.11606/issn.2316-9052.v28i2p97-123

Rapini A. 2012. Taxonomy “under construction”: advances in the systematics of Apocynaceae, with emphasis on the Brazilian Asclepiadoideae. Rodriguésia 63: 75–88. https://doi.org/10.1590/S2175-78602012000100007

Rapini A., Mello-Silva R. & Kawasaki M.L. 2001. Asclepiadoideae (Apocynaceae) da Cadeia do Espinhaço de Minas Gerais, Brasil. Boletim de Botânica da Universidade de São Paulo 19: 55–169. https://doi.org/10.11606/issn.2316-9052.v19i0p55-169

Rapini A., Mello-Silva R. & Kawasaki M.L. 2002. Richness and endemism in Asclepiadoideae (Apocynaceae) from the Espinhaço Range of Minas Gerais, Brazil – a conservationist view. Biodiversity and Conservation 11: 1733–1746. https://doi.org/10.1023/A:1020346616185

Rapini A., Goyder D.J., Konno T.U.P. & Farinaccio M.A. 2005. Progress in asclepiad taxonomy: species numbers in Brazilian Asclepiadoideae (Apocynaceae) through time. Kew Bulletin 60: 111–115. Available from http://www.jstor.org/stable/4110890 [accessed 26 Nov. 2020].

Rapini A., Silva R.F.S. & Sampaio L.N.P. 2009. Apocynaceae. In: Giulietti A.M., Rapini A., Andrade M.J.G., Queiroz L.P. & Silva J.M.C. (eds) Plantas Raras do Brasil: 54–64. Conservation International, Belo Horizonte.

Rapini A., Ribeiro P.L. & Silva U.C.S. 2010. 667. Hemipogon abietoides. Curtis’s Botanical Magazine 27: 23–35. https://doi.org/10.1111/j.1467-8748.2010.01681.x

Ribeiro P.L., Rapini A., Silva U.C.S., Konno T.U.P., Damascena L.S. & van den Berg C. 2012. Spatial analyses of the phylogenetic diversity of Minaria (Apocynaceae): assessing priority areas for conservation in the Espinhaço Range, Brazil. Systematics and Biodiversity 10: 317–331. https://doi.org/10.1080/14772000.2012.705356

Ribeiro P.L., Rapini A., Damascena L.S. & van den Berg C. 2014. Plant diversification in the Espinhaço Range: Insights from the biogeography of Minaria (Apocynaceae). Taxon 63: 1253–1264. https://doi.org/10.12705/636.16

Silva J.M.C. & Bates J.M. 2002. Biogeographic patterns and conservation in the South American Cerrado: a Tropical savanna hotspot. Bioscience 52: 225–233. https://doi.org/10.1641/0006-3568(2002)052[0225:BPACIT]2.0.CO;2

Published
2020-12-11
How to Cite
Bitencourt, C., Santos, A. P., Snak, C., & Rapini, A. (2020). Hemipogon trilobatus sp. nov. (Apocynaceae: Asclepiadoideae), a new microendemic from Chapada dos Veadeiros, Central Brazil. European Journal of Taxonomy, 729(1), 1-10. https://doi.org/10.5852/ejt.2020.729.1185
Issue
Vol. 729 (2020)
Section
Research article

Copyright (c) 2020 Cássia Bitencourt, Amanda P.B. Santos, Cristiane Snak, Alessandro Rapini

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

Creative Commons Copyright Notices

Authors who publish with this journal agree to the following terms:

  1. Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License (CC BY 4.0) that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
  2. Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
  3. Authors are NOT ALLOWED TO post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to taxonomic issues.