Miconia dispar Bentham (1850: 241)

Corrêa, André Luis, Scudeller, Veridiana Vizoni & Goldenberg, Renato, 2017, Melastomataceae in the Reserva de Desenvolvimento Sustentável do Tupé, Amazonas, Brazil, Phytotaxa 323 (2), pp. 101-127 : 116-117

22. Miconia dispar Bentham (1850: 241) . ( Figure 2 M .)

Trees 3–12 m tall. Dark brown rhytidome papyraceous vertically. Branches erect, cylindrical, not winged, rufous; branches, petioles, leaves abaxial surface, inflorescence, bracts, bracteoles, hypanthium and fruits, with dendritic caducous trichomes. Leaves opposite, isophyllous; petioles striate 1.7–4.9 cm long; leaf blades 2.46–35.2 × 11.2–15.1 cm, discolored, elliptical or oblong-elliptic, base acute, apex acuminate, margins entire or denticulate, not ciliate, adaxial side with dendritic trichomes only at the central veins or in young leaves, leaf veins 5, basal; ant domatia absent. Paniculate 13.5–39 × 4.6–26 cm, terminal; bracts ca. 19 mm long, elliptical, caducous; bracteoles not seen. Flowers 5-merous, sessile; hypanthium 3.1 mm long, campanulate, smooth; calyx simple, caducous; lacinia triangular; petals ca. 2.9 × 2 mm, white, obovate, symmetrical, apex rounded, base attenuate, margins not ciliate, glabrous; stamens 10, heteromorphic, smaller anthers ca. 2.3 mm long, larger anthers ca. 3 mm long, white, lanceolate, curved, apex attenuate, 1 apical pore, connective not prolonged, smaller filaments ca. 2.4. mm long, larger filaments ca. 3.1 mm long, glabrous; ovary ca. 1 mm long, half-inferior, placentation axillary, 3-locular, with dendritic trichomes; style ca. 5.4 mm long, straight, with dendritic persistent trichomes. Berry ca. 3.5 × 3.6 mm, unripe fruit green, ripe fruit blackish; up to 15 seeds per fruit, triangular.

Specimens examined:— BRAZIL. Amazonas , Manaus, RDS-Tupé, 15 August 2012, fl.,fr., A. L. Corrêa 42 ( EAFM!, HUAM!, INPA!) ; 16 August 2012, fr., A. L. Corrêa 49 ( EAFM!, HUAM!, INPA!) ; 06 September 2012, fr., A. L. Corrêa 57 ( EAFM!, HUAM!, INPA!) ; 02 September 2012, fr., A. L. Corrêa 99 ( EAFM!, HUAM!, INPA!) ; 07 December 2012, fr., A. L. Corrêa 128 ( EAFM!, HUAM!, INPA!) ; 28 April 2013, bot., A. L. Corrêa 221 ( EAFM!, HUAM!, INPA!) .

Distribution and habitat:— Venezuela, French Guiana, Peru, Bolivia ( Goldenberg et al. 2013) In Brazil it occurs in Amazonian forests ( Goldenberg & Caddah 2015). In the reserve, it occurs in “terra firme” lowlands, on clay and sandy, wet soils near streams.

Comments:— This species is frequent in the reserve.It can be recognized by the dark brown rhytidome,papyraceous, leaves with the abaxial surface brown and pulverulent, with dendritic trichomes.

Figures

FIGURE 2. Flower, fruit and bark in species of Melastomataceae in the RDS-Tupé: Flower (A–B).A: Henriettea martiusii; B: Tibouchina fothergillae. Fruit (C–F); C. H. maroniensis; D. Clidemia epibaterium; E. Miconia comptifolia; F. C. capitellata; G. Bellucia spruceana; H. M. longispicata, detail of inflorescence; I. M. rhytidophylla. Patterns and colors of the rhytidome and inner bark; J. M. chrysophylla; K. M. comptifolia; L. M. crassinervia; M. M. dispar; N. M. egensis; O. M. gratissima; P. M. longispicata; Q. M. lourteigiana; R. M. phanerostila; S. M. radulifolia; T. M. regelii; U. M. tomentosa; V. M. umbrosa; W. Tococa coronata; X. Tococa subciliata.