Miconia hyemalis A.St.-Hil. & Naudin
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Family
Melastomataceae (Magnoliophyta)
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Scientific Name
Miconia hyemalis A.St.-Hil. & Naudin
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Primary Citation
Ann. Sci. Nat., Bot. ser. 3, 16(2): 142. 1850
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Description
Description Author and Date: Description by Mayara K. Caddah, 2013.
Type: Brazil. Rio Grande do Sul. Gaudichaud 1362 (holotype: P).
Description: Shrubs to trees up to 5 m tall; young branches flattened, without interpetiolar ridges, densely covered by sessile-stellate, stipitate-stellate and dendritic trichomes. Leaves discolorous; petioles 0.5-2.5 cm; blades 4-9.5 x 1.5-3.5 cm, elliptic to ovate-elliptic, apex acute, base rounded to cordulate, margin slightly serrulate to serrate, mainly in the two superior third, chartaceous, longitudinal nerves 3, with an additional faint, marginal pair, basal or up to 2.2 mm above the base, abaxial surface with dense brownish indument consisting of stipitate-stellate with branched base to dendritic trichomes, sometimes with long and slender arms, up to 0.4 mm diam. Panicles 5 x 2.5 cm, glomerulate, terminal, sometimes with additional branches, densely covered by sessile-stellate, stipitate-stellate and long, dendritic trichomes with short arms, ca. 0.2 mm diam.; bracts up to 7 mm, lanceolate, caducous, bracteoles up to 2.2 mm, lanceolate, caducous. Flowers 5-merous. Hypanthium 2-2.2 mm long, campanulate, inner surface glabrous, outer densely covered by sessile-stellate to dendritic trichomes, 0.1-0.2 mm diam.; torus glabrous. Calyx lobate, caducous in fruit, inner surface glabrous or sparsely covered by sessile-stellate trichomes, outer with trichomes similar to the ones on the hypanthium; tube 0.4 mm long, inner lobes 0.3-1.1 mm long, triangular, outer teeth indistinct or up to 0.2 mm long. Petals 1.7-2.5 x 1.5-2.3 mm. Stamens white, slightly dimorphic; filaments 2-2.4 mm long, glabrous; connectives up to 0.3 mm prolonged below the thecae, with or without two tiny, ventral, lobes and with a dorsal, small, tooth; anthers 1.2-1.5 mm long, short oblong, with two, terminal, pores, the whole aperture ca. 0.6 mm diam. Ovary 0.8-0.9 mm long, 1/2 adherent to the hypanthium, 3-locular, apex glabrous; style 2.3-3.8 mm long, straight, punctiform, sparsely covered by sessile-stellate trichomes. Fruits up to 3.5 x 3.6, fruits red turning purple when mature, 10-15 seeds.
Habitat and Distribution: Miconia hyemalis occurs in the Araucaria Forests in the states of Rio Grande do Sul, Santa Catarina, Paraná and São Paulo, reaching Rio de Janeiro state by Serra da Mantiqueira. The species occurs in Cerrado habitats as well, from Paraná to Minas Gerais states, with an altitudinal range from 350 to 1900m asl.
- Sorry, no descriptions available for this record.
