Abstract
Three new species of Myrcia are described, illustrated and discussed. Myrcia rionegrensis from the Brazilian Amazon is related to M. clusiifolia from which it differs in having leaves with acute apex and ribbed fruits (vs. rounded apex and smooth fruits in M. clusiifolia); Myrcia microcalyx is similar to Myrcia scytophylla but differs in having pubescent staminal ring and ellipsoid fruits (vs. glabrous staminal ring and globose fruits in M. scytophylla) and Myrcia peruviana is related to M. riverae, but differs in having smaller leaves and flower buds and ellipsoid fruits (vs. globose in M. riverae).
References
<p>Amorim, B.S., Vasconcelos, T.N.C., Souza, G., Alves, M., Antonelli, A. & Lucas, E. (2019) Advanced understanding of phylogenetic relationships, morphological evolution and biogeographic history of the mega-diverse plant genus <em>Myrcia </em>and its relatives (Myrtaceae: Myrteae). <em>Molecular Phylogenetics and Evolution </em>138: 65–88. https://doi.org/10.1016/j.ympev.2019.05.014</p>
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<p>De Candolle, A.P. (1828) Myrtaceae.<em> In: Prodromus Systematis Naturalis Regni Vegetabilis </em>3: 207–296.</p>
<p>Diels, F. (1907) Myrtaceae. <em>In:</em> Ule, E. (org.) II. Beiträge zur Flora der Hylaea nach Sammlungen von Ule’s Amazonas-Expedition. <em>Verhandlung des Botanischen Vereins dr Provinz Brandenburg</em> 48: 186–193.</p>
<p>IUCN International Union for the Conservation of Nature and Natural Resources. 2001. <em>IUCN Red List Categories and Criteria: Version 3.1.</em> Gland, Switzerland. Available at: http://www.iucnredlist.org/technical-documents/categories-and-criteria (Accessed 20 April 2016)</p>
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<p>Lawrence, G.H.M. 1956. <em>Taxonomy of Vascular Plants</em>. New York: Macmillan Publishing. 823 pp.</p>
<p>Lucas, E.J., Matsumoto, K., Harris, S.A., Lughadha, E.N., Benardini, B. & Chase, M.W. (2011) Phylogenetics, morphology, and evolution of the large genus <em>Myrcia</em> s.l. (Myrtaceae). <em>International Journal of Plant Science </em>172: 915–934. https://doi.org/10.1086/660913</p>
<p>Lucas, E.J., Wilson, C.E., Lima, D.F., Sobral, M. & Matsumoto, K. (2016) A conspectus of <em>Myrcia </em>sect. <em>Aulomyrcia </em>(Myrtaceae). <em>Annals of Missouri Botanic Garden </em>101 (4): 648–698. https://doi.org/10.3417/2014015</p>
<p>Lucas, E.J., Amorim, B.S., Lima, D.F., Lima-Lourenço, A.R., Lughadha, E.N., Proença, C.E.B., Rosa, P.O., Rosário, A.S., Santos, L.L., Santos, M.F., Souza, M.C., Staggemeier, V.G., Vasconcelos, T.N.C. & Sobral, M. (2018) A new infra-generic classification of the species-rich Neotropical genus <em>Myrcia</em> <em>s.l.</em> <em>Kew Bulletin</em> 73 (1): 9.</p>
<p>McVaugh, R. (1956) Tropical American Myrtaceae; Notes on generic concepts and descriptions of previously unrecognized species. <em>Fieldiana</em> 29 (3): 145–228. https://doi.org/10.5962/bhl.title.2444</p>
<p>Miquel, F.A.W. (1846) Myrtaceae. <em>Linnaea</em> 19: 441.</p>
<p>Parra-Os., C. (2013) Una espécie nueva de <em>Myrcia</em> (Myrtaceae) y nuevos registros de la família para Colombia. <em>Caldasia</em> 35 (2): 293–298.</p>
<p>Radford, A.E., Dickison, W.C. & Massey, J.R. (1974) <em>Vascular plant systematic</em>. Harper & Row Publishers, New York, 891 pp.</p>
<p>Santamaria Aguilar, D., Estrada Ch., A. & Aguilar, R. (2014) Dos nuevas especies de <em>Myrcia</em> (Myrtaceae), del Pacífico Sur de Costa Rica. <em>Journal of the Botanical Research Institute of Texas</em> 8 (2): 449–455.</p>
<p>Santos, M.F., Lucas, E., Sobral, M. & Sano, P.T. (2015) New species of <em>Myrcia</em> s.l. (Myrtaceae) from Campo Rupestre, Atlantic Forest and Amazon Forest. <em>Phytotaxa</em> 222 (2): 100–110. https://doi.org/10.11646/phytotaxa.222.2.2</p>
<p>Santos, M.F., Sano, P.T. & Lucas, E. (2016a) Lectotypifications of some Nineteenth Century names and other nomenclatural updates in <em>Myrcia </em>s.l.<em> Phytotaxa </em>257 (1): 1–33. https://doi.org/10.11646/phytotaxa.257.1.1</p>
<p>Santos, M.F., Sano, P.T., Forest, F. & Lucas, E. (2016b) Phylogeny, morphology and circumscription of <em>Myrcia</em> sect. <em>Sympodiomyrcia</em> (<em>Myrcia</em> s.l., Myrtaceae).<em> Taxon</em> 65: 759–774. https://doi.org/10.12705/654.5</p>
<p>Sobral, M., Caliari, C.P., Gressler, E., Mazine, F.F., Magenta, M. & Viana, P.L. (2016) Seven new Southeastern Brazilian species of <em>Myrcia </em>(Myrtaceae). <em>Phytotaxa </em>247 (1): 27–44. https://doi.org/10.11646/phytotaxa.247.1.2</p>
<p>Staggemeier, V.G, Diniz-Filho, J.A., Forest, F. & Lucas, E. (2015) Phylogenetic analysis in <em>Myrcia </em>sect. <em>Aulomyrcia </em>and inferences on plant diversity in the Atlantic rainforest. <em>Annals of Botany </em>115 (5): 747–761. https://doi.org/10.1093/aob/mcv005</p>
<p>Swartz, O. (1788) <em>Nova Genera et Species Plantarum</em>. Stockholm, 158 pp.</p>
<p>Thiers, B. (2020) <em>Index Herbariorum: A global directory of public herbaria and associated staff</em>. New York: New York Botanical Garden’s Virtual Herbarium. Available at: http:/sweetgum.nybg.org/ih/ (Accessed 11 December 2020)</p>
<p>WCSP (World Checklist of Selected Plant Families) (2020) Kew: Royal Botanic Gardens. Available at: http://wcsp.science.kew.org/prepareChecklist.do?checklist=selected_families%40%40254110920172257604 (Accessed 11 December 2020)</p>
<p>De Candolle, A.P. (1827) Myrtacées. <em>In:</em> Bory de Saint-Vincent, J.B.G.M. (org.) <em>Dictionnaire classique d’histoire naturelle</em> 11: 399–407.</p>
<p>De Candolle, A.P. (1828) Myrtaceae.<em> In: Prodromus Systematis Naturalis Regni Vegetabilis </em>3: 207–296.</p>
<p>Diels, F. (1907) Myrtaceae. <em>In:</em> Ule, E. (org.) II. Beiträge zur Flora der Hylaea nach Sammlungen von Ule’s Amazonas-Expedition. <em>Verhandlung des Botanischen Vereins dr Provinz Brandenburg</em> 48: 186–193.</p>
<p>IUCN International Union for the Conservation of Nature and Natural Resources. 2001. <em>IUCN Red List Categories and Criteria: Version 3.1.</em> Gland, Switzerland. Available at: http://www.iucnredlist.org/technical-documents/categories-and-criteria (Accessed 20 April 2016)</p>
<p>Kunth, C. (1823) Myrtaceae.<em> In: </em>Humboldt, A. de, Bonpland, A. & Kunth, C. <em>Nova genera et species plantarum</em> 6: 129–149.</p>
<p>Lawrence, G.H.M. 1956. <em>Taxonomy of Vascular Plants</em>. New York: Macmillan Publishing. 823 pp.</p>
<p>Lucas, E.J., Matsumoto, K., Harris, S.A., Lughadha, E.N., Benardini, B. & Chase, M.W. (2011) Phylogenetics, morphology, and evolution of the large genus <em>Myrcia</em> s.l. (Myrtaceae). <em>International Journal of Plant Science </em>172: 915–934. https://doi.org/10.1086/660913</p>
<p>Lucas, E.J., Wilson, C.E., Lima, D.F., Sobral, M. & Matsumoto, K. (2016) A conspectus of <em>Myrcia </em>sect. <em>Aulomyrcia </em>(Myrtaceae). <em>Annals of Missouri Botanic Garden </em>101 (4): 648–698. https://doi.org/10.3417/2014015</p>
<p>Lucas, E.J., Amorim, B.S., Lima, D.F., Lima-Lourenço, A.R., Lughadha, E.N., Proença, C.E.B., Rosa, P.O., Rosário, A.S., Santos, L.L., Santos, M.F., Souza, M.C., Staggemeier, V.G., Vasconcelos, T.N.C. & Sobral, M. (2018) A new infra-generic classification of the species-rich Neotropical genus <em>Myrcia</em> <em>s.l.</em> <em>Kew Bulletin</em> 73 (1): 9.</p>
<p>McVaugh, R. (1956) Tropical American Myrtaceae; Notes on generic concepts and descriptions of previously unrecognized species. <em>Fieldiana</em> 29 (3): 145–228. https://doi.org/10.5962/bhl.title.2444</p>
<p>Miquel, F.A.W. (1846) Myrtaceae. <em>Linnaea</em> 19: 441.</p>
<p>Parra-Os., C. (2013) Una espécie nueva de <em>Myrcia</em> (Myrtaceae) y nuevos registros de la família para Colombia. <em>Caldasia</em> 35 (2): 293–298.</p>
<p>Radford, A.E., Dickison, W.C. & Massey, J.R. (1974) <em>Vascular plant systematic</em>. Harper & Row Publishers, New York, 891 pp.</p>
<p>Santamaria Aguilar, D., Estrada Ch., A. & Aguilar, R. (2014) Dos nuevas especies de <em>Myrcia</em> (Myrtaceae), del Pacífico Sur de Costa Rica. <em>Journal of the Botanical Research Institute of Texas</em> 8 (2): 449–455.</p>
<p>Santos, M.F., Lucas, E., Sobral, M. & Sano, P.T. (2015) New species of <em>Myrcia</em> s.l. (Myrtaceae) from Campo Rupestre, Atlantic Forest and Amazon Forest. <em>Phytotaxa</em> 222 (2): 100–110. https://doi.org/10.11646/phytotaxa.222.2.2</p>
<p>Santos, M.F., Sano, P.T. & Lucas, E. (2016a) Lectotypifications of some Nineteenth Century names and other nomenclatural updates in <em>Myrcia </em>s.l.<em> Phytotaxa </em>257 (1): 1–33. https://doi.org/10.11646/phytotaxa.257.1.1</p>
<p>Santos, M.F., Sano, P.T., Forest, F. & Lucas, E. (2016b) Phylogeny, morphology and circumscription of <em>Myrcia</em> sect. <em>Sympodiomyrcia</em> (<em>Myrcia</em> s.l., Myrtaceae).<em> Taxon</em> 65: 759–774. https://doi.org/10.12705/654.5</p>
<p>Sobral, M., Caliari, C.P., Gressler, E., Mazine, F.F., Magenta, M. & Viana, P.L. (2016) Seven new Southeastern Brazilian species of <em>Myrcia </em>(Myrtaceae). <em>Phytotaxa </em>247 (1): 27–44. https://doi.org/10.11646/phytotaxa.247.1.2</p>
<p>Staggemeier, V.G, Diniz-Filho, J.A., Forest, F. & Lucas, E. (2015) Phylogenetic analysis in <em>Myrcia </em>sect. <em>Aulomyrcia </em>and inferences on plant diversity in the Atlantic rainforest. <em>Annals of Botany </em>115 (5): 747–761. https://doi.org/10.1093/aob/mcv005</p>
<p>Swartz, O. (1788) <em>Nova Genera et Species Plantarum</em>. Stockholm, 158 pp.</p>
<p>Thiers, B. (2020) <em>Index Herbariorum: A global directory of public herbaria and associated staff</em>. New York: New York Botanical Garden’s Virtual Herbarium. Available at: http:/sweetgum.nybg.org/ih/ (Accessed 11 December 2020)</p>
<p>WCSP (World Checklist of Selected Plant Families) (2020) Kew: Royal Botanic Gardens. Available at: http://wcsp.science.kew.org/prepareChecklist.do?checklist=selected_families%40%40254110920172257604 (Accessed 11 December 2020)</p>