Taxon Details: Miconia contrerasii Wurdack
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Narratives:
Family:
Melastomataceae (Magnoliophyta)
Melastomataceae (Magnoliophyta)
Scientific Name:
Miconia contrerasii Wurdack
Miconia contrerasii Wurdack
Accepted Name:
This name is currently accepted.
This name is currently accepted.
Description:
Description Author and Date: Frank Almeda, based on Almeda, F. (2009). Melastomataceae. In: G. Davidse, M. Sousa-Sânchez, S. Knapp, & F. Chiang (eds.), Flora Mesoamericana: Cucurbitaceae a Polemoniaceae. 4(1): 164-338.
Type: Holotype: Guatemala, Lundell & Contreras 19406 (US!)
Description: Shrub or tree 2.5-8 m tall, the terete uppermost cauline internodes, petioles, abaxial leaf surfaces, inflorescence branches, hypanthia, and calyx lobes densely covered with stalked-stellate hairs. Leaves of a pair equal to unequal in length; blades 5-plinerved, ovate to ovate-oblong, 5.5-23 x 2.5-11.3 cm, apex acuminate, base obtuse to rounded-truncate, the adaxial surface moderately to sparsely covered with a partially deciduous mixture of stalked-stellate hairs and minute glandular hairs, the margin entire; petioles 1.7-6 cm long. Inflorescence a few-flowered (6-14) panicle 3-8 cm long; flowers (5-) 6-merous and pleiostemonous on pedicels 2-3 mm long, the deciduous bracteoles narrowly oblong, 4-5 x 1-1.5 mm. Calyx tube 2 mm long, the calyx lobes ovate to semicircular, 2-3 x 3.5 mm; the exterior calyx teeth subulate, 3-4 mm long, exceeding and obscuring the abaxial surface of calyx lobes. Petals white, glabrous but puncticulate when dry, obovate with a rounded-truncate apex, 11-13 x 9-10 mm. Anthers isomorphic, (33-) 45-51 per flower, 2.5-3 mm long, yellow, oblong-subulate with a ventrally inclined apical pore; connective thickened but neither prolonged nor elevated. Style moderately glandular-puberulent basally, 1-1.4 cm long, stigma not expanded; ovary (5-) 6-locular, completely inferior, apex glabrous; berry 1 x 1 cm when dry. Seeds oblong to narrowly pyriform, the testa smooth and vernicose, 1 mm long.
Habitat and Distribution: Local in cloud forest. 1500-1660 m. GUATEMALA (Lundell & Contreras 20896, CAS). (Endemic).
Taxonomy and Systematics: This species is readily distinguished by its indument of stalked-stellate hairs, (5-) 6-merous pleiostemonous flowers, and glandular puberulent style. The indument on adaxial foliar surfaces persists to varying degrees on mature leaf blades. Because of this, some mature blades only have a concentration of stalked-stellate hairs along impressed primary veins and a scattering of glandular hairs elsewhere on the adaxial surface.
Notes: [Description based only on Mesoamerican specimens.]
Description Author and Date: Frank Almeda, based on Almeda, F. (2009). Melastomataceae. In: G. Davidse, M. Sousa-Sânchez, S. Knapp, & F. Chiang (eds.), Flora Mesoamericana: Cucurbitaceae a Polemoniaceae. 4(1): 164-338.
Type: Holotype: Guatemala, Lundell & Contreras 19406 (US!)
Description: Shrub or tree 2.5-8 m tall, the terete uppermost cauline internodes, petioles, abaxial leaf surfaces, inflorescence branches, hypanthia, and calyx lobes densely covered with stalked-stellate hairs. Leaves of a pair equal to unequal in length; blades 5-plinerved, ovate to ovate-oblong, 5.5-23 x 2.5-11.3 cm, apex acuminate, base obtuse to rounded-truncate, the adaxial surface moderately to sparsely covered with a partially deciduous mixture of stalked-stellate hairs and minute glandular hairs, the margin entire; petioles 1.7-6 cm long. Inflorescence a few-flowered (6-14) panicle 3-8 cm long; flowers (5-) 6-merous and pleiostemonous on pedicels 2-3 mm long, the deciduous bracteoles narrowly oblong, 4-5 x 1-1.5 mm. Calyx tube 2 mm long, the calyx lobes ovate to semicircular, 2-3 x 3.5 mm; the exterior calyx teeth subulate, 3-4 mm long, exceeding and obscuring the abaxial surface of calyx lobes. Petals white, glabrous but puncticulate when dry, obovate with a rounded-truncate apex, 11-13 x 9-10 mm. Anthers isomorphic, (33-) 45-51 per flower, 2.5-3 mm long, yellow, oblong-subulate with a ventrally inclined apical pore; connective thickened but neither prolonged nor elevated. Style moderately glandular-puberulent basally, 1-1.4 cm long, stigma not expanded; ovary (5-) 6-locular, completely inferior, apex glabrous; berry 1 x 1 cm when dry. Seeds oblong to narrowly pyriform, the testa smooth and vernicose, 1 mm long.
Habitat and Distribution: Local in cloud forest. 1500-1660 m. GUATEMALA (Lundell & Contreras 20896, CAS). (Endemic).
Taxonomy and Systematics: This species is readily distinguished by its indument of stalked-stellate hairs, (5-) 6-merous pleiostemonous flowers, and glandular puberulent style. The indument on adaxial foliar surfaces persists to varying degrees on mature leaf blades. Because of this, some mature blades only have a concentration of stalked-stellate hairs along impressed primary veins and a scattering of glandular hairs elsewhere on the adaxial surface.
Notes: [Description based only on Mesoamerican specimens.]