Taxonomic study of Myrtaceae in forest fragments in Amazonian Maranhão, Brazil Author Amorim, Gabriela Dos Santos Programa de Pós-graduação em Biologia Vegetal, Universidade Federal de Pernambuco, Av. Prof. Moraes Rego, 1235 - Cidade Universitária, 50670 - 901, Recife - PE, Brazil. Author Barbosa, Maria Regina De Vasconcellos Departamento de Sistemática e Ecologia, Universidade Federal da Paraíba, Cidade Universitária, Caixa Postal 5065, 58051 - 970, João Pessoa- PB, Brazil. Author Jr, Eduardo Bezerra De Almeida Departamento de Biologia, Universidade Federal do Maranhão, Cidade Universitária Dom Delgado, Av. dos Portugueses, 1966 - Vila Bacanga, 65080 - 805, São Luís - MA. Author Thomas, William Wayt 0000-0002-4996-536X Institute of Systematic Botany, New York Botanical Garden, 2900 Southern Boulevard, Bronx, 10458 - 5126, NY, United States. wthomas @ nybg. org; https: // orcid. org / 0000 - 0002 - 4996 - 536 X wthomas@nybg.org text Phytotaxa 2022 2022-10-11 568 1 27 60 http://dx.doi.org/10.11646/phytotaxa.568.1.3 journal article 10.11646/phytotaxa.568.1.3 87ddb879-1616-4e3b-8817-434b61fb0c60 1179-3163 7184245 6. Eugenia densiracemosa Mazine & Faria (2013: 53) . Type:— BRAZIL . Mato Grosso . Chapada dos Guimarães , Parque Nacional da Chapada dos Guimarães , Véu da Noiva , ao longo do rio Coxipozinho , trilha para a base da cachoeira, F. F. Mazine et al. 1072 ( holotype : ESA; isotype: K [001018882], image). ( Fig. 2G ) Shrubs 3– 15 m . Twigs densely pubescent, the indumentum whitish. Leaves with petioles 2–13 mm long, glabrous, channeled; blades oblanceolate, oblong,obovate or elliptic, 2.5–20× 1.8–8.5cm , glabrous, chartaceous or subcoriaceous, discolorous; glands conspicuous; base cuneate, acute or obtuse; apex acute, acuminate or cuspidate; midvein adaxially flat; lateral veins visible, not arched, 8 to 13 pairs; intra-marginal vein 1–3 mm from the margin, margin revolute. Inflorescence axillary, raceme simple, the axis 1.8–6 cm long, sparsely pubescent or densely pubescent, the indumentum whitish; bracts ovate to broadly so, or deltate, 0.1–0.2 × 0.3 mm , pubescent, persisting in the fruit; pedicels 2–10 mm long, pubescent; bracteoles ovate or deltate, 0.2 × 0.5 mm , glabrescent or densely pubescent; persisting in the fruit; flowers buds globose, 1–2 × 2 mm , not constricted above ovary; calyx-lobes partially fused in the lower third of the bud, four, orbicular, 0.3–2 × 0.5–1.9 mm , glabrescent or densely pubescent, not reflexed, persistent in the fruits; ovary 2-3-locular. Immature fruits globose, 0.6–1.1 × 0.5–1.7 cm , glabrous, surface smooth. Note:— Eugenia densiracemosa may be recognized by its chartaceous or subcoriaceous leaves; with intra-marginal vein 1–3 mm from the margin; long simple racemes ( 1.8–6 cm ), generally with a long pedicel ( 2–10 mm long). This species is morphologically similar to E . florida , but can be distinguished by its 8 to 13 pairs of unarched lateral veins (vs. arched) that are visible adaxially and abaxially (5 to 8 pairs, visible abaxially). Distribution and habitat:— Known from French Guiana and central, northeastern and northwestern Brazil ( Acre , Ceará , Goiás , Maranhão , Mato Grosso , Pará and Tocantins states) (POWO 2020, Flora do Brasil 2020 ). E . densiracemosa grows in forest formations along rivers and streams borders, in Cerrado and Amazonia biomes ( Mazine & Faria 2013 ). In Amazonian Maranhão it was found in “terra firme” and secondary forests. Phenology:— Flowering in January, August and October to December and fruiting in March and August. Specimens examined:— BRAZIL . Maranhão : Alto Alegre do Pindaré : Mineirinho , 0-100 m , 3°40’ S , 45º50’ W , 26 May 1979 (fr.), J. Jangoux & R.P . Bahia 875 ( NY !) . Santa Luzia , margem direita da Rod. BR-222, a altura do km 124, que liga Santa Inês a Açailândia na Belém-Brasília , 3°57’48” S , 45°39’29” W , 16 December 1978 (fl.), N.A. Rosa 3014 ( NY !) ; Mineirinho , 3°40’ S , 45°50’ W , 26 March 1979 (fr.), J. Jangoux 875 ( NY !) . São Luís , Estrada do Tirirical , 2°31’47” S , 44°18’10” W , February-March 1989 (fr.), R.L. Fróes 11534 ( NY !) ; Granja Barreto , 2°31’47” S , 44°18’10” W , 04 January 1950 (fl.), R.L. Fróes 25619 ( IAN !) ; Estrada da Maioba , 10 January 1950 (fl.), R.L. Fróes 25654 ( IAN !) ; Reserva Florestal do Sacavém , 2°30’ S , 44°15’ W , 27 February 1992 (fl.), F.H. Muniz 36 (INPA, image); 15 September 1992 (fr.), F.H. Muniz 159 (INPA, image); 07 October 1992 (fl.), F.H. Muniz 168 (RB, image); 10 February 1993 (fl.), F.H. Muniz 216 (RB, image). São José de Ribarmar , Sítio Aguahy , 2°38’34” S , 44°08’19” W , 25 August 2017 (fr., fl.), G.S . Amorim 359 ( MAR !) ; 28 October 2017 (fl.), G.S. Amorim 379 ( MAR !) .