Taxon Details: Miconia formosa Cogn.
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Narratives:
Family:
Melastomataceae (Magnoliophyta)
Melastomataceae (Magnoliophyta)
Scientific Name:
Miconia formosa Cogn.
Miconia formosa Cogn.
Primary Citation:
Monogr. Phan. 7: 842. 1891
Monogr. Phan. 7: 842. 1891
Accepted Name:
This name is currently accepted.
This name is currently accepted.
Description:
Description Author and Date: Description by Mayara K. Caddah, 2013.
Type: Brazil. Rio de Janeiro: Nova Friburgo, Alto da Serra. Glaziou 16911 (syntypes: BR, C, F-2 sheets, G-2 sheets, K, NY, P, R-2 sheets).
Description: Trees up to 16 m tall; young branches flattened, with interpetiolar ridges, densely covered by lepidote trichomes. Leaves discolorous; petioles 5-8 cm; blades 11-25 x 6.5-15 cm, elliptic to ovate-elliptic, apex shortly acuminate, base acute to rounded, rarely cordulate, margin entire, chartaceous, longitudinal nerves 5, with an additional faint, marginal pair, basal to supra-basal, up to 2 cm above the base, abaxial surface with dense ferruginous indument consisting of lepidote, trichomes, ca. 0.2 mm diam. Panicles 9-25 x 5-13 cm, glomerulate, terminal, densely covered by lepidote trichomes ca. 0.1 mm diam.; bracts up to 5 mm, lanceolate, early caducous, bracteoles up to 0.3 mm, lanceolate, early caducous. Flowers 5(6)-merous. Hypanthium 2.5-4 mm long, campanulate to tubulose, costate, inner surface glabrous, outer densely covered by lepidote trichomes ca. 0.1 mm diam.; torus glabrous. Calyx truncate, caducous in fruit, inner surface moderately covered by sessile-stellate trichomes, outer with trichomes similar to the ones on the hypanthium; tube 1 mm long, outer lobes indistinct. Petals 3.7-3.9 x 2-2.3 mm. Stamens white, slightly dimorphic; filaments 2.9-3.4 mm long, glabrous; connectives not prolonged below the thecae, with two small, ventral, appendages in the smaller stamens and a dorsal tooth in both types of stamens; anthers 2.8-3 mm long, oblong, with a single terminal, moderate pore, ca. 0.3 mm. Ovary 1.1-1.4 mm long, 1/2 adherent to the hypanthium, 3-locular, apex glabrous; style 4.2-5.5 mm long, straight to curved, punctiform, glabrous. Fruits up to 4.2 x 5.3 mm diam., purple, 3-13 seeds.
Habitat and Distribution: Miconia formosa occurs from lowlands to mountains up to 1600 m a.s.l., from Santa Catarina to Espírito Santo state, in Atlantic Forest s.s.
Description Author and Date: Description by Mayara K. Caddah, 2013.
Type: Brazil. Rio de Janeiro: Nova Friburgo, Alto da Serra. Glaziou 16911 (syntypes: BR, C, F-2 sheets, G-2 sheets, K, NY, P, R-2 sheets).
Description: Trees up to 16 m tall; young branches flattened, with interpetiolar ridges, densely covered by lepidote trichomes. Leaves discolorous; petioles 5-8 cm; blades 11-25 x 6.5-15 cm, elliptic to ovate-elliptic, apex shortly acuminate, base acute to rounded, rarely cordulate, margin entire, chartaceous, longitudinal nerves 5, with an additional faint, marginal pair, basal to supra-basal, up to 2 cm above the base, abaxial surface with dense ferruginous indument consisting of lepidote, trichomes, ca. 0.2 mm diam. Panicles 9-25 x 5-13 cm, glomerulate, terminal, densely covered by lepidote trichomes ca. 0.1 mm diam.; bracts up to 5 mm, lanceolate, early caducous, bracteoles up to 0.3 mm, lanceolate, early caducous. Flowers 5(6)-merous. Hypanthium 2.5-4 mm long, campanulate to tubulose, costate, inner surface glabrous, outer densely covered by lepidote trichomes ca. 0.1 mm diam.; torus glabrous. Calyx truncate, caducous in fruit, inner surface moderately covered by sessile-stellate trichomes, outer with trichomes similar to the ones on the hypanthium; tube 1 mm long, outer lobes indistinct. Petals 3.7-3.9 x 2-2.3 mm. Stamens white, slightly dimorphic; filaments 2.9-3.4 mm long, glabrous; connectives not prolonged below the thecae, with two small, ventral, appendages in the smaller stamens and a dorsal tooth in both types of stamens; anthers 2.8-3 mm long, oblong, with a single terminal, moderate pore, ca. 0.3 mm. Ovary 1.1-1.4 mm long, 1/2 adherent to the hypanthium, 3-locular, apex glabrous; style 4.2-5.5 mm long, straight to curved, punctiform, glabrous. Fruits up to 4.2 x 5.3 mm diam., purple, 3-13 seeds.
Habitat and Distribution: Miconia formosa occurs from lowlands to mountains up to 1600 m a.s.l., from Santa Catarina to Espírito Santo state, in Atlantic Forest s.s.
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