Myrciaria floribunda O. Berg
Creators: name: Amorim, Gabriela Dos Santos
name: Barbosa, Maria Regina De Vasconcellos
name: Jr, Eduardo Bezerra De Almeida
name: Thomas, William Wayt
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Myrtales
Myrtaceae
Myrciaria
Myrciaria floribunda

description: 34. Myrciaria floribunda (H. West ex Willd.) O. Berg (1854–1856: 330).
Basionym:— Eugenia floribunda H. West ex Willdenow (1799: 960).
Type:— UNITED STATES. Virgin Islands, Ins. St. Crucis [St. Croix], M. Vahl s.n. (HAL [0089630], image).
Trees 3– 4 m. Twigs puberulent, the indumentum whitish. Leaves with petioles 2–4 mm long, puberulent, unchanneled; blades elliptic or lanceolate, 4.4–7.3 × 2.8–3 cm, glabrous, membranaceous, concolorous; glands not seen; base cuneate; apex long acuminate; midvein adaxially flat, sometimes prominent; lateral veins inconspicuous; intra-marginal vein 1 mm or less from the margin, margin flat. Inflorescence glomerules clustered in axils, the axis inconspicuous; bracts not seen, caducous before anthesis; pedicels absent; bracteoles orbicular, ca. 0.5 × 0.5 mm, glabrous, caducous after anthesis; flower buds ovate, 1.5 × 1.5 mm, not constricted above ovary; calyx-lobes free, four, glabrous, ovate, 1–1.5 × 1 mm, not reflexed; the fruit falling together with the calyx, corolla and hypanthium; ovary not seen. Immature fruit globose, 0.5–0.7 × 0.5–0.9 cm, glabrous, surface with glands marked.
Note:— Myrciaria floribunda may be recognized by its elliptic or lanceolate leaves with inconspicuous lateral veins, the long-acuminate leaf apex, the inflorescence of glomerules clustered in leaf axils, and the fruit, which falls together with the petals and hypanthium. This species is related to M. tenella, from which it is distinguished by leaves 4.4–7.3 × 2.8–3 cm (vs. 1–2.5 × 0.5–1.2 cm), the long-acuminate leaf apex (vs. acute leaf apex), and the 2–4 mm long petiole (vs. 1–2 mm).
Distribution and habitat:— Widely distributed from Mexico to tropical America (POWO 2020). In Amazonian Maranhão, M. floribunda was found growing in secondary forests and along roads.
Phenology:— Flowering in May.
Specimens examined:— BRAZIL. Maranhão: Nova Esperança, Rio Alto Turiaçú, 17 May 1979 (fl.) I.J. Jangoux & R.P. Bahia 689 (MG!). Santa Inês, Colônia Três Satubas, margem da estrada de terra, a 12 km da BR-316, cruzamento à direita a 20 km de Araguaná, 3°04’48” S, 45°45’ W, 13 May 1979 (st.), J. Jangoux 587 & R.P. Bahia (NY!). Santa Luzia, Faz Agripec-Varig, caminho para o Rio Mutum, margem esquerda do Rio Pindaré, 3°7’48” S, 45°39’29” W, 05 April 1983 (fl.), M.F.F. Silva 1008 (INPA, image); Km 20 da estrada Santa Luzia / Santa Inez, 3°57’48” S, 45°39’29” W, 29 July 1977 (fl.), D. Thomaz 406 (PEUFR!). São Luís, Reserva Florestal do Sacavém, 2°30’ S, 44°15’ W, 07 May 1992 (fl.), F.H. Muniz 95 (INPA, image); Rio Anil, 2°31’14” S, 44°17’47” W, 14 May 1949 (fl.), R.L. Fróes 24281 (IAN!); Granja Federal, 2°31’47” S, 44°18’10” W, 12 May 1949 (fl.), R.L. Fróes 24243 (IAN!).
Additional specimens examined:— BRAZIL. Amazonas: Manaus: Manaus - Porto Velho Highway, Km. 25, 4°46’06” S, 61°19’26” W, 19 March 1974 (fr.), G.T. Prance 20735 (NY!). Pará. Serra dos Carajás, 475-525 m, 5°48’ S, 50°33’ W, 07 June 1982 (fr.), C.R. Sperling 5952 (NY!).
description: Published as part of Amorim, Gabriela Dos Santos, Barbosa, Maria Regina De Vasconcellos, Jr, Eduardo Bezerra De Almeida & Thomas, William Wayt, 2022, Taxonomic study of Myrtaceae in forest fragments in Amazonian Maranhão, Brazil, pp. 27-60 in Phytotaxa 568 (1) on pages 54-55, DOI: 10.11646/phytotaxa.568.1.3, http://zenodo.org/record/7184245