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(Last Modified On 9/11/2013)
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(Last Modified On 9/11/2013)
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Species
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Manettia hydrophila Dwyer
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Note
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TYPE: Panama, Lewis et al. 2822 (MO).
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Description
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Herbs, often prostrate and procumbent, the stems spreading or erect and weak, the hairs dense, weak, wrinkled, the nodes well spaced. Leaves ovate or rhomboid ovate, 2-5 cm long, 1.2-2.8 cm wide, acute toward the apex, basally attenuate acute or subobtuse, often inequilateral, the costa subplane above, plane beneath or scarcely immersed, the lateral veins ca. 6, arcuate, prominulous above, sulcate beneath, membranous, shiny, with minute white cystoliths on both sides, the costa and veins often with appressed uncinate hairs, the margins pu- bescent; petioles ca. 1 cm long, puberulent; stipules short, widely triangular, ca. 1 mm long, black when dry. Inflorescences terminal or axillary and opposite, the peduncle to 1.5 cm long, the cymes contracted, the flowers alternate and well spaced on a flexuous rachis or on 2 branches terminating the peduncle, the branches to 4 cm long. Flowers sessile; hypanthium compressed rotund, ca. 1
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Habit
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Herbs
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Description
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mm long, the hairs appressed, white, the calycine lobes 5, ascending, narrowly linear lanceolate, to 2.8 mm long, 0.4 mm wide, puberulent on both sides with a distinct, red, rotund gland, 0.05 mm long, in the sinuses; corolla rose colored, the tube cylindrical, to 5 mm long, 3 mm wide, glabrous, the lobes 4-5, ovate oblong, 5 mm long, 3 mm wide, obtuse; stamens 4, the anthers oblong, 1.3-1.5 mm long, obtuse at the apex and base, the filaments ca. 1 mm long, attached ca. 1.5 mm from the base, the ovarian disc ringlike, 0.1 mm long, the style much reduced, the stigmas lanceolate, acute. Fruits rotund, 3.5 mm in diam., the hairs ascending, uncinate, to 0.5 mm long, drying at first brown, ultimately the surface of the wall deciduous, the remainder scarious, white, smooth; seeds subrotund or oblong, ca. 0.5 mm long, flat, red, shiny.
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Distribution
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known only from Panama.
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Note
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It is unique in being a prostrate or erect aquatic.
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Specimen
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VERAGUAS: Mouth of Rio Concepci6n, in swamp, Leivis et al. 2822 (MO).
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