Taxonomic study of Myrtaceae in forest fragments in Amazonian Maranhão, Brazil Amorim, Gabriela Dos Santos Barbosa, Maria Regina De Vasconcellos Jr, Eduardo Bezerra De Almeida Thomas, William Wayt Phytotaxa 2022 2022-10-11 568 1 27 60 4578H 1631701 McVaugh (1969: 114) McVaugh 114 1969 [179,615,1742,1769] Magnoliopsida Myrtaceae Myrcia Plantae Myrtales 20 47 Tracheophyta species grandis    Type:— VENEZUELA. Amazonas: Rio Siapa, Casiquiare,  Maguireet al. 37617( holotype: MICH [1109512]).( Fig. 4L-N)  Trees to shrub 3- 7 m. Twigs glabrous. Leaves with petioles 4–6 mmlong, glabrous, channeled; blades elliptic or lanceolate, 4–6 × 1.9–2.4 cm, glabrous, chartaceous or coriaceous, discolorous, more lustrous adaxially; glands not seen; base subacute or cuneate; apex acute or acuminate, often long acuminate; midvein adaxially impressed; lateral veins numerous and slightly visible, not arched, 15 to 20 pairs; intra-marginal vein 1 mmor less from the margin, margin flat. Inflorescence terminal or subterminal, panicle, pyramidal, flowers lax, the axis 4.2–6.6 cmlong, pubescent, the indumentum whitish, the first branching 2.4–5.8 cmlong; bracts lanceolate, 2–4 × 2 mm, pubescent, caducous before anthesis; pedicels 1 mmlong, glabrous; bracteoles lanceolate, 1–2 × 1 mm, pubescent, caducous before anthesis; flower buds campanulate, 2–2.3 × 1.5 mm, not constricted above ovary; calyx-lobes free, four, orbicular, 0.5–1 mm, glabrous, not reflexed; ovary not seen. Immature fruits globose, 0.4–0.6 × 0.6–0.8 cm, glabrous, surface smooth.   Note:—  Myrcia grandismay be recognized by its elliptic or lanceolate leaves, which are more lustrous adaxially; the pubescent panicle; and the campanulate and glabrous calyx-lobes. This species is morphologically related to  M. sylvaticafrom which it is distinguished by its glabrous leaves (vs. abaxially pubescent) with an adaxially impressed midvein (vs. adaxially sulcate).   Distribution and habitat:—Known from Bolivia, Colombia, Guyana, Panamá, Venezuelaand northeastern and northwestern Brazil(Amazonas, Maranhão, Pará, Rondôniaand Roraimastates) (POWO 2020, Flora do Brasil2020). In Amazonian Maranhão,  M. grandiswas found growing on riversides.   Phenology:—Flowering in December.   Specimens examined:—  BRAZIL. Maranhão: Pinheiro: Rio Alto Turiaçu, Nova Esperança,  100 m, 2°55’12” S, 45°45’ W,  01 December 1978(fl.),  J. Jangoux& R.P .   Bahia128( NY!).  Additional -sSpecimens examined:—  BRAZIL. Amazonas: Igarapé Lobisomen, Rio Cuieras, 2°31’12” S, 60°15’ W,  22 July 1991(fl.),  S.A. Mori21827( NY!). 3923982301 Venezuela Type Casiquiare Rio Siapa 20 47 1 Amazonas holotype 3923982353 1978-12-01 J. Jangoux Brazil Pinheiro 100 -2.92 Nova Esperanca 924 -45.75 Rio Alto Turiacu 21 48 1 Maranhao 3923982595 [740,935,554,580] NY Brazil Bahia 21 48 1 Bahia 3923982449 1991-07-22 NY S. A. Mori Brazil Rio Cuieras -2.52 Amazonas 924 -60.25 Igarape Lobisomen 21 48 1