Abstract
Eugenia canumana, E. humaitana, E. jutai, E. multilocellata and E. seislagoana, from the Brazilian state of Amazonas, and E. xinguana, from the Brazilian states of Maranhão and Pará, are proposed as new species. Eugenia canumana is morphologically related to E. laevis, but differs by its twigs with cataphylls and glabrous flowers; E. humaitana is close to E. cribrata, but has glabrous flowers with sepals in two unequal pairs; E. jutai is close to E. campina, but has dull-colored blades with midvein adaxially impressed and longer pedicels and bracteoles; E. multilocellata is related to E. agathopoda, but has pilose flowers and multilocellate anthers; E. seislagoana is related to E. illepida, but has blades with midvein adaxially raised and smaller flowers with sepals fused at its basal portion, and E. xinguana is related to E. stictopetala, but has blades with midvein adaxially raised and larger flowers. All six species are assigned to section Umbellatae.
References
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<p>Mazine, F., Faria, J.E.Q., Giaretta, A., Vasconcelos, T., Forest, F. & Lucas, E. (2018) Phylogeny and biogeography of the hyper-diverse genus <em>Eugenia</em> (Myrtaceae, Myrteae), with emphasis on <em>E. </em>sect. <em>Umbellatae</em>, the most unmanageable clade. <em>Taxon </em>67: 752–769. https://doi.org/10.12705/674.5</p>
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<p>McDade, L. (1995) Species concepts and problems in practice: insight from botanical monographs. <em>Systematic Botany</em> 20: 606–622. https://doi.org/10.2307/2419813</p>
<p>McVaugh, R. (1956) Tropical American Myrtaceae—notes on generic concepts and descriptions of previously unrecognized species. <em>Fieldiana, Botany</em> 29 (3): 145–228. https://doi.org/10.5962/bhl.title.2444</p>
<p>McVaugh, R. (1958) Flora of Peru—Myrtaceae. <em>Field Museum Publications in Botany</em> 13: 569–818. https://doi.org/10.5962/bhl.title.2317</p>
<p>McVaugh, R. (1969) Myrtaceae.<em> In:</em> Flora of the Guayana Highland—part VIII. <em>Memoirs of the New York Botanical Garden</em> 18: 55–286.</p>
<p>Rocha, A.E., Catunda, P.H.A. & Dias, L.J.B.S. (2020) <em>Relatório técnico da classificação da vegetação do zoneamento ecológico econômico do estado do Maranhão (ZEE-MA)—Estapa Bioma Amazônico</em>. Instituto Maranhense de Estudos Socioeconômicos e Cartográficos (IMESC), São Luís, 196 pp. Available at: www.zee.ma.gov.br/src/upload/relatorios/Vegetacao.pdf (accessed 25 August 2021)</p>
<p>Schwarzbach, A.E. (2014) Rhizophoraceae. In Kubitzki, K. (ed.) <em>The families and genera of vascular plants</em>, v. 6. pp. 283–295. https://doi.org/10.1007/978-3-642-39417-1_23</p>
<p>Sobral, M. & Stehmann, J.R. (2009) An analysis of new angiosperm species discoveries in Brazil (1990–2006). <em>Taxon</em> 58: 227–232. https://doi.org/10.1002/tax.581021</p>
<p>Souza, M.A.D. (2015) <em>Estudos em Eugenia L. (Myrtaceae) na Amazônia Central: taxonomia com o uso de ferramentas morfoanatômicas</em>. Doctoral thesis, INPA (Instituto Nacional de Pesquisas da Amazônia), 204 pp.</p>
<p>Souza, M.A.D. & Sobral, M. (2018) Six new <em>Eugenia</em> (Myrtaceae) from Amazonas, Brazil. <em>Phytotaxa </em>349: 18–30.</p>
<p>Souza, M.A.D., Scudeller, V.V. & Mendonça, M.S. (2015) Three new species of <em>Eugenia</em> (Myrtaceae) from Brazilian Amazonia. <em>Phytotaxa</em> 212: 87–9. https://doi.org/10.11646/phytotaxa.212.1.4</p>
<p>SpeciesLink (2022) <em>SpeciesLink network</em>. Available from: specieslink.net/search (accessed 1 February 2022)</p>
<p>Stevens, P.F. (2007) Clusiaceae-Guttiferae. <em>In:</em> Kubitzki, K. (ed.) <em>The families and genera of vascular plants</em>, v. 9. pp. 48–66. https://doi.org/10.1007/978-3-540-32219-1_10</p>
<p>Stevens, P.F. & Bittrich, V. (2017) Description of <em>Clusia favus</em> sp. nov. and <em>C. nigrolineata</em> P.F.Stevens and a new name for <em>Clusia arrudaea</em>:<em> C. mexiae</em> (Clusiaceae: Clusieae). <em>Brittonia</em> 69: 525–534. https://doi.org/10.1007/s12228-017-9484-2</p>
<p>Steyermark, J.A. (1957) Myrtaceae.<em> In:</em> Steyermark, J.A. (org.) Botanical exploration in Venezuela—IV. <em>Fieldiana, Botany </em>28: 1003–1025.</p>
<p>Thiers, B. (2021) <em>Index Herbariorum. A global directory of public herbaria and associated staff.</em> New York Botanical Garden’s Virtual Herbarium. [http://sweetgum.nybg.org/science/ih/]</p>
<p>Wang, J., Wang, H. & Li, D. (2005) <em>Eurya luchunensis</em>, a new species of Theaceae from Yunan, China. <em>Novon</em> 15: 490–492.</p>
<p>Weitzman, A.L., Dressler, S. & Stevens, P.F. (2004) Ternstroemiaceae.<em> In:</em> Kubitzki, K. (ed.) <em>The families and genera of vascular plants</em>, v. 6. pp. 450–460. https://doi.org/10.1007/978-3-662-07257-8_47</p>
<p>Wilson, P.G. (2011) Myrtaceae.<em> In:</em> Kubitzki, K. (ed.) <em>The families and genera of vascular plants</em>, v. 10. pp. 212–271. https://doi.org/10.1007/978-3-642-14397-7_14</p>
<p>Barrie, F., Ramos, C., Ortiz, O.O., Vergara-Pérez, I. & McPherson, G. (2016) Five new species of <em>Eugenia</em> (Myrtaceae) from Panama. <em>Novon</em> 24: 333–342. https://doi.org/10.3417/2015040</p>
<p>Berg, O.C. (1855–1856) Revisio Myrtacearum Americae. <em>Linnaea</em> 27: 1–472.</p>
<p>Caetano, A.P.S., Reginato, M., Goldenberg, R., Cortez, P.A., Basso-Alves, J.P., Michelangeli, F., Carmello-Guerreiro, S.M. & Teixeira, S.P. (2020) Structure and evolution of polysporangiate anthers in Melastomataceae. <em>Perspectives in Plant Ecology, Evolution and Systematics </em>46: 125556. https://doi.org/10.1016/j.ppees.2020.125556</p>
<p>Campbell, D.G. (1989) The importance of floristic inventory in the tropics.<em> In: </em>Campbell, D.G. & Hammond, D. (eds.) <em>Floristic inventory of tropical countries: The status of plant systematics, collections, and vegetation, plus recommendations for the future</em>. New York Botanical Garden, New York. pp. 5–30.</p>
<p>De Candolle, A.P. (1828) <em>Prodromus Systematis Naturalis Regni Vegetabilis</em> 3: 207–296.</p>
<p>Diels, L. (1907) Myrtaceae. p. 186–192 <em>in</em> Ule, E. (org.) II. Beiträge zur Flora der Hylaea nach den Sammlungen von Ule’s Amazonas-Expedition. <em>Verhandlungen des Botanischen Vereins der Provinz Brandenburg</em> 48: 116–208.</p>
<p>Ellis, B., Daly, D.C., Hickey, L.J., Johnson, K.R., Mitchell, J.D., Wilf, P. & Wing, S.L. (2009) <em>Manual of leaf architecture</em>. Cornell University, 190 pp.</p>
<p>Geocat (Geospatial Conservation Assessment Tool) (2020) Kew Botanic Gardens. Available from: geocat.kew.org (accessed 11 March 2020)</p>
<p>Gonçalves, E. & Lorenzi, H. (2011) <em>Morfologia vegetal</em>. 2 ed. São Paulo, Plantarum, 544 pp.</p>
<p>Govaerts, R., Sobral, M., Ashton, P., Barrie, F., Holst, B.K., Landrum, L.R., Matsumoto, K., Mazine, F.F., Nic Lughadha, E., Proença, C., Soares-Silva, L.H., Wilson, P.G. & Lucas, E. (2022) Myrtaceae. In <em>World Checklist of Selected Plant Families</em> (http://wcsp.science.kew.org/home.do; accessed 2022-02-01).</p>
<p>Harris, J.G. & Harris, M.W. (2001) <em>Plant identification terminology: an illustrated glossary</em>. 2 ed. Spring Lake Publishing, Spring Lake, 206 pp.</p>
<p>IBGE (Instituto Brasileiro de Geografia e Estatística) (2021) <em>IBGE</em>@<em>cidades.</em> Available from: cidades.ibge.gov.br/ (accessed 31 May 2021)</p>
<p>IUCN (International Union for the Conservation of Nature) (2012). <em>IUCN Red List Categories and Criteria</em>. Version 3.1, 2 ed. Gland, 32 pp. Available from: https://www.iucnredlist.org/resources/categories-and-criteria (accessed 3 June 2021)</p>
<p>IUCN (2019). <em>Guidelines for using the IUCN Red List Categories and Criteria</em>. Version 14. IUCN, Gland, 108 pp. Available from: iucnredlist.org/documents/RedListGuidelines.pdf (accessed 3 June 2021)</p>
<p>Jacquin, N.J. (1760) <em>Enumeratio systematica plantarum</em>. Leiden, 41 pp. [www.biodiversitylibrary.org/page/622940#page/26/mode/1up]</p>
<p>Kirkbride, J.H. (1985) Manipulus Rubiacearum IV. <em>Kerianthera</em> (Rubiaceae), a new genus from Amazonian Brazil. <em>Brittonia</em> 37: 109–116.</p>
<p>Linnaeus, C. (1753) <em>Species Plantarum</em>. Stockholm, Laurentii Salvii, v. 1, 560 pp.</p>
<p>Mazine, F., Bünger, M.O., Faria, J.E.Q., Lucas, E. & Souza, V.C. (2016) Sections in <em>Eugenia</em> (Myrteae, Myrtaceae): nomenclatural notes and a key. <em>Phytotaxa</em> 289: 225–236. https://doi.org/10.11646/phytotaxa.289.3.2</p>
<p>Mazine, F., Faria, J.E.Q., Giaretta, A., Vasconcelos, T., Forest, F. & Lucas, E. (2018) Phylogeny and biogeography of the hyper-diverse genus <em>Eugenia</em> (Myrtaceae, Myrteae), with emphasis on <em>E. </em>sect. <em>Umbellatae</em>, the most unmanageable clade. <em>Taxon </em>67: 752–769. https://doi.org/10.12705/674.5</p>
<p>Mazine, F.F., Valdemarin, K.S., Bünger, M., Faria, J.E.Q., Fernandes, T., Giaretta, A., Santana, K.C., Sobral, M. & Souza, M.A.D. (2022) <em>Eugenia. In:</em> <em>Flora do Brasil 2020</em>. Jardim Botânico do Rio de Janeiro. Available from: http://reflora.jbrj.gov.br/reflora/floradobrasil/FB10338 (accessed 1 February 2022)</p>
<p>McDade, L. (1995) Species concepts and problems in practice: insight from botanical monographs. <em>Systematic Botany</em> 20: 606–622. https://doi.org/10.2307/2419813</p>
<p>McVaugh, R. (1956) Tropical American Myrtaceae—notes on generic concepts and descriptions of previously unrecognized species. <em>Fieldiana, Botany</em> 29 (3): 145–228. https://doi.org/10.5962/bhl.title.2444</p>
<p>McVaugh, R. (1958) Flora of Peru—Myrtaceae. <em>Field Museum Publications in Botany</em> 13: 569–818. https://doi.org/10.5962/bhl.title.2317</p>
<p>McVaugh, R. (1969) Myrtaceae.<em> In:</em> Flora of the Guayana Highland—part VIII. <em>Memoirs of the New York Botanical Garden</em> 18: 55–286.</p>
<p>Rocha, A.E., Catunda, P.H.A. & Dias, L.J.B.S. (2020) <em>Relatório técnico da classificação da vegetação do zoneamento ecológico econômico do estado do Maranhão (ZEE-MA)—Estapa Bioma Amazônico</em>. Instituto Maranhense de Estudos Socioeconômicos e Cartográficos (IMESC), São Luís, 196 pp. Available at: www.zee.ma.gov.br/src/upload/relatorios/Vegetacao.pdf (accessed 25 August 2021)</p>
<p>Schwarzbach, A.E. (2014) Rhizophoraceae. In Kubitzki, K. (ed.) <em>The families and genera of vascular plants</em>, v. 6. pp. 283–295. https://doi.org/10.1007/978-3-642-39417-1_23</p>
<p>Sobral, M. & Stehmann, J.R. (2009) An analysis of new angiosperm species discoveries in Brazil (1990–2006). <em>Taxon</em> 58: 227–232. https://doi.org/10.1002/tax.581021</p>
<p>Souza, M.A.D. (2015) <em>Estudos em Eugenia L. (Myrtaceae) na Amazônia Central: taxonomia com o uso de ferramentas morfoanatômicas</em>. Doctoral thesis, INPA (Instituto Nacional de Pesquisas da Amazônia), 204 pp.</p>
<p>Souza, M.A.D. & Sobral, M. (2018) Six new <em>Eugenia</em> (Myrtaceae) from Amazonas, Brazil. <em>Phytotaxa </em>349: 18–30.</p>
<p>Souza, M.A.D., Scudeller, V.V. & Mendonça, M.S. (2015) Three new species of <em>Eugenia</em> (Myrtaceae) from Brazilian Amazonia. <em>Phytotaxa</em> 212: 87–9. https://doi.org/10.11646/phytotaxa.212.1.4</p>
<p>SpeciesLink (2022) <em>SpeciesLink network</em>. Available from: specieslink.net/search (accessed 1 February 2022)</p>
<p>Stevens, P.F. (2007) Clusiaceae-Guttiferae. <em>In:</em> Kubitzki, K. (ed.) <em>The families and genera of vascular plants</em>, v. 9. pp. 48–66. https://doi.org/10.1007/978-3-540-32219-1_10</p>
<p>Stevens, P.F. & Bittrich, V. (2017) Description of <em>Clusia favus</em> sp. nov. and <em>C. nigrolineata</em> P.F.Stevens and a new name for <em>Clusia arrudaea</em>:<em> C. mexiae</em> (Clusiaceae: Clusieae). <em>Brittonia</em> 69: 525–534. https://doi.org/10.1007/s12228-017-9484-2</p>
<p>Steyermark, J.A. (1957) Myrtaceae.<em> In:</em> Steyermark, J.A. (org.) Botanical exploration in Venezuela—IV. <em>Fieldiana, Botany </em>28: 1003–1025.</p>
<p>Thiers, B. (2021) <em>Index Herbariorum. A global directory of public herbaria and associated staff.</em> New York Botanical Garden’s Virtual Herbarium. [http://sweetgum.nybg.org/science/ih/]</p>
<p>Wang, J., Wang, H. & Li, D. (2005) <em>Eurya luchunensis</em>, a new species of Theaceae from Yunan, China. <em>Novon</em> 15: 490–492.</p>
<p>Weitzman, A.L., Dressler, S. & Stevens, P.F. (2004) Ternstroemiaceae.<em> In:</em> Kubitzki, K. (ed.) <em>The families and genera of vascular plants</em>, v. 6. pp. 450–460. https://doi.org/10.1007/978-3-662-07257-8_47</p>
<p>Wilson, P.G. (2011) Myrtaceae.<em> In:</em> Kubitzki, K. (ed.) <em>The families and genera of vascular plants</em>, v. 10. pp. 212–271. https://doi.org/10.1007/978-3-642-14397-7_14</p>