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 163382 10.11646/phytotaxa.568.1.3 87ddb879-1616-4e3b-8817-434b61fb0c60 1179-3163 7184245 1. Calycolpus goetheanus (Mart. ex DC.) O. Berg (1854–1856: 381). Basionym:— Myrtus goetheana Martius ex De Candolle (1828: 240) . Type:— BRAZIL . “Habitat in Brasiliae prov. Rio Negro ”, Martius 2762 (M; lectotype designated by Landrum 2010: 381 ) . ( Fig. 2A–B .) Trees 1– 12 m . Twigs glabrous or glabrescent, the indumentum whitish or reddish-brown. Leaves with petioles 1–7 mm long, glabrous or glabrescent, unchanneled or shallowly channeled; blades elliptic to broadly so, lanceolate, ovate or obovate, 3.3–14.4 × 2.4–5.5 cm , glabrous, membranaceous or chartaceous, discolorous; glands conspicuous; base cuneate, acute or rounded; apex acuminate, rarely attenuate or cuneate; midvein adaxially sulcate or impressed; lateral veins moderately visible, not arched, 10 to 20 pairs; intra-marginal vein 1–2 mm from the margin, margin flat. Inflorescence axillary or terminal, fascicle, the axis ca. 3 mm long, sometimes inconspicuous, glabrous; bracts deltate, 0.3–0.5 × 0.6 mm , puberulent adaxially, glabrous abaxially, persistent in the fruit; pedicels 9–40 mm long, glabrous; bracteoles triangular to narrowly so, or deltate, 0.5–2 × 0.2–0.7 mm , glabrous, persistent in the fruit; flower buds globose, 7 × 12 mm , not constricted above ovary; calyx-lobes free, five, narrowly triangular, deltate to broadly so, 5–10 × 3–6 mm , glabrous, not reflexed, persistent in the fruit; ovary 3-5-locular. Immature fruits subglobose or globose, 0.4–0.7 × 0.5–1.1 cm , glabrous, surface smooth. Note:— Calycolpus goetheanus may be recognized by its glabrous leaves, inflorescence in fascicles; buds with five free calyx-lobes (5–10 × 3–6 mm ); ovary 3–5-locular; and glabrous, subglobose or globose fruits. Distribution and habitat:— Known from Colombia , French Guiana , Guyana , Suriname , Trinidad-Tobago, Venezuela , northeastern and northwestern Brazil (Amazonas, Maranhão , Pará and Roraima states) ( Landrum 2010 , Flora do Brasil 2020 ). In Amazonian Maranhão , C . goetheanus was found growing along a road, and in both “terra firme’’ and flooded forests. Phenology:— Flowering in January, February, May and October to December, and fruiting in January, February and October. Specimens examined:— BRAZIL . Maranhão : Alcântara , Piriuaçú , 02°24 32” S , 44°24’53” W , 11 April 1954 (st.), R.L. Fróes 30771 ( IAN !) . Cururupu , Maracassumé River Region , Campo de Boa Esperança , 02°02’29” S , 45°57’19” W , 22 October 1932 (fl., fr.), R. Fróes 1977 ( NY !) . São José de Ribamar , Sítio Aguahy , 02°38’47” S , 44°09’05” W , 28 October 2017 (fl.), G.S. Amorim 378 ( MAR !) ; idem, 20 February 2018 (fr.), G.S. Amorim 467 ( MAR !) . São Luís , Alumar , 02º41’30” S , 44°9’44” W , 29 November 994 (fl.), N . Figueiredo 7 ( MAR !) ; 02°41’30” S , 44°19’44” W , 18 January 1995 [fl], N. Figueiredo 4 ( MAR !) ; 02°41’30” S , 44°19’44” W , 13 November 1995 (fl.), K.B. Ferreira & E.C. Gimos s.n. ( MAR !) ; Estrada que vai do Rio Anil para Maioba , 10 January 1950 (fl.), R.L. Fróes 25652 (U, image); Reserva Florestal do Sacavém , 02º34’04” S , 44º15’44” W , 03 December 1988 (fl.), R.C. Reis 57 ( MAR !) ; 22 January 1992 [fl], F.H. Muniz 17 (RB); 26 February 1992 [fl], F.H. Muniz 196 (HUEFS, image); 02°35’59” S , 44°16’34” W , 27 May 1992 (fl.), F.H. Muniz 256 (HUEFS, image); 02°30’ S , 44°15’ W , 21 January 1993 (fr.), F.H. Muniz 287 (INPA, image); Rio Anil , 02°28’59” S , 44°12’00” W , 13 January 1951 (fl., fr.), B.E. Franz 26348 (ASU, image); Sede da Cemar , 02°31’47” S , 44°18’10” W , 27 November 1985 (fl.), G.T. Prance & R. Henriques 29886 ( US , image) ; Sítio Santa Eulália , 02°30’30” S , 44°16’39” W , 29 January 2018 (fl.), G.S. Amorim 414, 419 ( MAR !) ; 02°30’52” S , 44°16’34” W , 26 February 2018 (fr.), G. S. Amorim 491 ( MAR !) .