Taxon Details: Miconia umbriensis Wurdack
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Narratives:
Family:
Melastomataceae (Magnoliophyta)
Melastomataceae (Magnoliophyta)
Scientific Name:
Miconia umbriensis Wurdack
Miconia umbriensis 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: Colombia, Klug 1926 (US!)
Description: Shrub or tree 3-10 m tall, the somewhat compressed quadrisulcate uppermost cauline internodes, petioles, abaxial leaf surfaces, inflorescence branches, hypanthia, and calyx densely covered with an appressed stellulate-lepidote indument that conceals the actual surface. Leaves of a pair markedly unequal in size, the blades 5-nerved, broadly elliptic 10-30 x 6-16 cm, the apex acuminate, the base acute to obtuse, the margin entire, the adaxial surface glabrous; petioles 2.5-6.7 cm long. Inflorescence a multiflowered panicle with the sessile flowers aggregated into capitate clusters of 6-12 flowers, flowers 5-merous, the early deciduous bracteoles triangular, 0.3 mm long. Calyx tube 0.2-0.3 mm long, the calyx fused to form a truncate or ± undulate flange with depressed-triangular lobes 0.2 x 0.25 mm; the exterior calyx teeth essentially obsolete. Petals white, glabrous, oblong-obovate and asymmetrically rounded to retuse, 1.5-2 x 0.75-1 mm. Anthers alternately somewhat dimorphic in size and form, narrowly oblong with a ventrally inclined apical pore; the thecae alternately 0.75–1.3 mm long or 1-1.4 mm long; connective prolonged about 0.2 mm abaxially the thecae and expanded into an acute tooth-like dorso-basal appendage 0.25 mm long (small anthers) or connective prolonged 0.5 mm abaxially the thecae and expanded dorso-basally into a ± rounded dorso-basal appendage 0.2 mm long (large anthers). Style glabrous, 1.5-3 mm long; stigma capitellate; ovary 3-locular, 2/3 inferior (at anthesis), apex glabrous. Mature berries and seeds unknown.
Habitat and Distribution: Local in rain forest and low cloud forest. Colombia. PANAMA (Croat 15198, US). 270-850 m.
Taxonomy and Systematics: This species is known from the flora area only from Cerro Jefe, Panama where it appears to flower at irregular intervals. Because little flowering material is available from Mesoamerica, the floral details presented here are based, in part, on Colombian material.
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: Colombia, Klug 1926 (US!)
Description: Shrub or tree 3-10 m tall, the somewhat compressed quadrisulcate uppermost cauline internodes, petioles, abaxial leaf surfaces, inflorescence branches, hypanthia, and calyx densely covered with an appressed stellulate-lepidote indument that conceals the actual surface. Leaves of a pair markedly unequal in size, the blades 5-nerved, broadly elliptic 10-30 x 6-16 cm, the apex acuminate, the base acute to obtuse, the margin entire, the adaxial surface glabrous; petioles 2.5-6.7 cm long. Inflorescence a multiflowered panicle with the sessile flowers aggregated into capitate clusters of 6-12 flowers, flowers 5-merous, the early deciduous bracteoles triangular, 0.3 mm long. Calyx tube 0.2-0.3 mm long, the calyx fused to form a truncate or ± undulate flange with depressed-triangular lobes 0.2 x 0.25 mm; the exterior calyx teeth essentially obsolete. Petals white, glabrous, oblong-obovate and asymmetrically rounded to retuse, 1.5-2 x 0.75-1 mm. Anthers alternately somewhat dimorphic in size and form, narrowly oblong with a ventrally inclined apical pore; the thecae alternately 0.75–1.3 mm long or 1-1.4 mm long; connective prolonged about 0.2 mm abaxially the thecae and expanded into an acute tooth-like dorso-basal appendage 0.25 mm long (small anthers) or connective prolonged 0.5 mm abaxially the thecae and expanded dorso-basally into a ± rounded dorso-basal appendage 0.2 mm long (large anthers). Style glabrous, 1.5-3 mm long; stigma capitellate; ovary 3-locular, 2/3 inferior (at anthesis), apex glabrous. Mature berries and seeds unknown.
Habitat and Distribution: Local in rain forest and low cloud forest. Colombia. PANAMA (Croat 15198, US). 270-850 m.
Taxonomy and Systematics: This species is known from the flora area only from Cerro Jefe, Panama where it appears to flower at irregular intervals. Because little flowering material is available from Mesoamerica, the floral details presented here are based, in part, on Colombian material.
Notes: [Description based only on Mesoamerican specimens.]