Miconia leiotricha Wurdack

  • Family

    Melastomataceae (Magnoliophyta)

  • Scientific Name

    Miconia leiotricha Wurdack

  • Description

    Description Author and Date: Nichole M. Tiernan, July 2013, as modified for the PBI Miconiaea project.

    Description: Shrub, 2-5 m. Young stems terete, puberulent with bulla-based trichomes 0.3-0.7 mm long, internodes longitudinal ridges absent, nodal line absent. Leaves isophyllous; petiole 0.8-2.6 cm long, puberulent with elongated trichomes 0.4-0.6 mm long; the blade 6.3-9.5 x 4.2-6.9 cm, ovate, chartaceous, the apex narrowly acute, the base cordate, the margin ciliate with trichomes 0.5-1.6 mm long; secondary veins 3-4 pairs, basally nerved, sometimes the forth pair of veins is pronounced, and sometimes it's a faint marginal. Tertiary veins percurrent, quaternary veins reticulate, areoles 1.1-1.8 mm wide, veins flat on the adaxial surface and raised on the abaxial surface; adaxial surface subbullate, pubescent with subbulate trichomes 0.6-1.7 mm, and pubescent as in the surface on the primary and secondary veins; abaxial surface pubescent with elongated trichomes 0.5-1.8 mm, pubescent as in the surface on the primary and secondary veins. Inflorescences a terminal and axillary, panicle cyme, 3.5-4.2 cm long; peduncles terete, pubescent with elongated trichomes 0.5-1.1 mm long; bracts caducous; bracteoles ovate, foliose, blade 5.8 x 3.7 mm, 3 nerved, surface strongly hirsute.. Flowers 6-merous, diplostemonous, pedicel 0 mm long pubescent as in the inflorescence. Hypanthium 4 mm long, campanulate, 4.3-5.4 mm wide at the torus, external surface strigose-hirsute with stout rather straight hairs 0.4-1.5 mm long. Calyx open in bud, the tube 1.3 mm long at anthesis, the lobes deltate, strigose-hirsute as in the hypanthium, calyx teeth acicular 1.5-2.3 x 0.1 mm, hirsute. Petals-6, 10 x 5 mm, narrowly obovate to broadly rounded, yellow at anthesis, glabrous, the apex rounded. Stamens dimorphic, antesepalous stamens filament 6 mm long, thecae 5.5 mm long, strongly arcuate ventrally, connective prolonged straight back 1.3 mm behind base of pollen sacks, half the way as a tapering organ, and the rest in two slightly diverging lobes, [antepetalous stamens filament 5 mm long, 0.4 mm wide, minutely prolonged straight back at base into a 2-lobed appendage], opening by 1 upright pore, anthers with 2 locules bilobed, glabrous. Ovary 6-locular, inferior, truncate-conic, glabrous, apex absent a corona; style 6.5 mm long, slightly sigmoid, gradually expanded distally from 0.5 diameter at base to 1.1 at summit, glabrous; stigma truncate. Berries 2.7-4.0 x 3.5-4.6 mm, ovoid, pubescence persistent when mature, calyx persistent.

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