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 10. Eugenia lambertiana De Candolle (1828: 270) . Type :—“in ins. Caribaeis, S. Vincentii” [and the Grenadines ]. Lambert s.n . (B as F negative 33490) . ( Fig. 3 C-D.) Trees or shrubs 4 m . Twigs glabrous. Leaves with petioles 5–10 mm long, glabrous, channeled; blades elliptic or lanceolate, rarely ovate, 4.1–12.2 × 1.3–5 cm , puberulent adaxially and glabrous abaxially, the indumentum whitish, membranaceous, discolorous; glands not seen; base attenuate, cuneate or rounded; apex acute or acuminate; midvein adaxially sulcate; lateral veins visible, not arched, 8 to 20 pairs; intra-marginal vein 1–2 mm or less from the margin, margin revolute. Inflorescence axillary, a fascicle, the axis 2–7 mm long, sparsely pubescent, the indumentum brownishred; bracts deltate, 0.5 × 0.4 mm , caducous after anthesis, glabrous; pedicels 2–5.9 mm long, glabrous; bracteoles deltate, ca. 1 mm , glabrous, persistent in the fruit; flower buds globose 2–3 × 3 mm , not constricted above ovary; calyx-lobes free, four, orbicular, 1.5 × 2 mm , glabrous, not reflexed, persistent in the fruit; ovary not seen. Immature fruit globose, 0.8–1 × 0.7 cm , glabrous, surface smooth. Note:— Eugenia lambertiana may be recognized by its elliptic or lanceolate, rarely ovate leaves, which are discolorous, brown adaxially and green abaxially; and the intra-marginal vein ca. 1–2 mm or less from the margin. This species is morphologically related to E . protenta , but can be distinguished by its leaves, which are puberulent adaxially and glabrous abaxially (vs. glabrous), the revolute margin (vs. flat), and the glabrous fruit (vs. pubescent). Distribution and habitat:— Known from Bolivia , Colombia , Ecuador , French Guiana, Guyana , Leeward Is., Peru , Suriname , Trinidad-Tobago, Venezuela , Windward Is. and widely distributed in central, northeastern and northwestern Brazil (POWO 2020, Flora do Brasil 2020 ). In Amazonian Maranhão , E . lambertiana was found growing in open field. Phenology:— Flowering in November and fruiting in March. Specimens examined:— BRAZIL . Maranhão : Maracaçumé River Region , 08 September 1932 (fl.), R.L. Fróes 1872 ( NY !) . Additional specimens examined:— BRAZIL . Amapá : Serra do Navio , Rio Amapari , 0°52’52” N , 52°01’03” W , 23 November 1954 (fr.), R.S. Cowan 38547 ( NY !) . Pará : Oriximiná. Rio Trombetas , margem esquerda do lago Erepecu , ao longo do lago, 1°20’31” S , 56°34’43” W , 16 July 1980 (fr.), C.A. Cid Ferreira 1522 with J. Ramos , C.D. Mota & M. Rosas ( NY !) .