(Last Modified On 10/23/2012)
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(Last Modified On 10/23/2012)
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Species
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RYNCHOSPORA CYPEROIDES (SW.) Mart.
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PlaceOfPublication
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Denkschr. Akad. Wiss. Muenchen 6:149. 1816-17.
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Synonym
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Schoenus cyperoides Sw. Prodr. 19. 1788. Rynchospora polycephala Kunth, Enum. 2:291.1837.
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Description
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Glabrous perennial; culms 2-8 dm. high, leafy; leaves frequently longer than the culms, 2-5 mm. wide; heads 1-15, in a loose corymb 8-10 mm. in diameter, brown, the bracts filiform; achene 1-1.5 mm. long, narrowly obovate, smooth or transversely lightly undulate, roughened, the upper margin spinescent, brown, the scabrous beak equaling or exceeding the achene; bristles 6, upwardly barbed, exceeding the achene.
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Distribution
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Wet savannas, chiefly below 100 m. altitude. West Indies, Mexico to Uruguay; tropical Africa.
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Elevation
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below 100 m.
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Specimen
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PANAMA: east of Pacora, ca. 25 m., Woodson, Allen & Seibert 750; between Pacora and Chepo, ca. 25 m., Woodson, Allen & Seibert I640; northeast of Hacienda La Joya, 50-300 m., Dodge, Hunter, Steyermark & Allen 16914.
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