A taxonomic account of Myrciinae (Myrteae, Myrtaceae): generic and sectional placement of forgotten species and a list of all accepted species Author Santos, Matheus F. Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, Rua Arcturus 03, Jd. Antares, São Bernardo do Campo, SP 09606 - 070, Brazil matheus_fs@yahoo.com.br Author Amorim, Bruno S. 0000-0002-8109-9254 Escola Superior de Tecnologia (EST), Universidade do Estado do Amazonas (UEA), Av. Darcy Vargas 1200, Parque Dez de Novembro, Manaus, AM 69050 - 020, Brazil brunosarim@yahoo.com.br Author Burton, George P. 0000-0002-2775-123X Herbarium, Royal Botanic Gardens, Kew, Richmond, Surrey TW 9 3 AB, UK g.burton@kew.org Author Faria, Jair E. Q. 0000-0001-7875-6797 Instituto Interamericano de Cooperação para a Agricultura - IICA - SHIS QI 5, Chácara 16, Lago Sul, Brasília, DF 71600 - 530, Brazil jairfariajr@gmail.com Author Fernandes, Thiago 0000-0002-0288-7181 Instituto de Pesquisas, Jardim do Botânico do Rio de Janeiro, Rua Pacheco Leão 915, Rio de Janeiro, RJ 22460 - 030, Brazil thiagofernandes@id.uff.br Author Flickinger, Jonathan A. 0000-0001-7693-131X Lady Bird Johnson Wildflower Center, The University of Texas at Austin, Austin, TX 78739, U. S. A. jonathan.flickinger@gmail.com Author Gaem, Paulo Henrique 0000-0003-3054-7325 Department of Ecology and Evolutionary Biology, University of Michigan, Ann Arbor, MI 48109, U. S. A. phgaem@gmail.com Author Landrum, Leslie R. 0000-0002-3809-9865 Natural History Collections, School of Life Sciences, Arizona State University Tempe, AZ 85287 - 4108, U. S. A. les.landrum@asu.edu Author Lima, Duane F. Author Proença, Carolyn E. B. Author Rosa, Priscila O. Author Lima-Dos-Santos, Leidiana 0000-0001-9210-1359 Programa de Pós-Graduação em Botânica, Departamento de Biologia, Universidade Federal Rural de Pernambuco, Dois Irmãos, Recife, PE 52171 - 900, Brazil leidianalima88@gmail.com Author Setubal, Robberson B. 0009-0006-1677-9137 Departamento de Botânica, Instituto de Biociências, Universidade de São Paulo, Rua do Matão, 277, São Paulo, SP 05508 - 090, Brazil rbsetubal@gmail.com Author Stadnik, Aline M. S. 0000-0002-2370-5869 Instituto Interamericano de Cooperação para a Agricultura - IICA - SHIS QI 5, Chácara 16, Lago Sul, Brasília, DF 71600 - 530, Brazil aline.stadnik8@gmail.com Author Staggemeier, Vanessa G. 0000-0003-4911-9574 Departamento de Ecologia, Centro de Biociências, Universidade Federal do Rio Grande do Norte, Natal, RN 59078 - 970, Brazil v.staggemeier@gmail.com Author Vasconcelos, Thais N. C. 0000-0001-9991-7924 Department of Ecology and Evolutionary Biology, University of Michigan, Ann Arbor, MI 48109, U. S. A. tvasc@umich.edu Author Lucas, Eve J. 0000-0002-7603-435X Herbarium, Royal Botanic Gardens, Kew, Richmond, Surrey TW 9 3 AB, UK e.lucas@kew.org text Phytotaxa 2024 2024-11-27 674 2 129 170 https://doi.org/10.11646/phytotaxa.674.2.1 journal article 10.11646/phytotaxa.674.2.1 1179-3163 14521602 5.3.1. Myrcia mesoamericana (P.E.Sánchez) A.R.Lourenço&Sánchez-Chávez (in Lourenço et al .2018:78 ). Marlierea mesoamericana P.E.Sánchez (1991: 117) . Type :— COSTA RICA . Heredia , Parque Nacional Braulio Carrillo , 9 July 1989 , Sánchez Vindas 1305 ( holotype CR!; isotypes BM!, CICY030984!, F2131954!, INB0001564178!, K000330400!, MEXU00656281!, MEXU00656282!, MO-187158!, NY01582725!, US01957351!, WISv0255095 WIS !) . Myrcia mesoamericana has distinct leaf morphology with strongly raised veins in the abaxial surface and no clearly typical sympodial branching. The calyx lobes are totally fused but open as an imperfect calyptra during anthesis. The inflorescence has sympodial branching at the base, typical of Myrcia sect. Calyptranthes . Phylogenetic analysis is desirable for more accurate placement of Myrcia mesoamericana inside Myrcia .