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(Last Modified On 3/12/2013)
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(Last Modified On 3/12/2013)
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Species
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SIDA QUINQUENERVIA Duchassaing ex Triana & Planchon
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PlaceOfPublication
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Ann. Sci. Nat., Bot., ser. 4, 17: 176. 1862.
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Synonym
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Sida guianensis K. Schum. in Mart., Fl. Bras. 12(3): 305. 1891. Sidastrum. quinquenervium (Duchassaing ex Triana & Planchon) Baker f., J. Bot. 30: 137. 1892.
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Description
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Herb or suffrutex up to 1.2 m high, the stem unbranched or sparingly branched above, copiously fulvous-stellate-hirsute. Leaves short-petiolate, the petiole up to 1.5 cm long, densely fulvous-stellate-hirsute, the stipules subulate; blade ovate to narrowly ovate or narrowly oblong-ovate, truncate, rounded or subeordate at the base, acute to acuminate at the apex, crenate to serrate at the margin, up to 10 cm long and 4.5 cm broad, 3- to 5-palminerved, scabridulous on both surfaces, stellate- pubescent above, more or less densely stellate-puberulus beneath, the venation prominent on the lower surface. Flowers in dense, axillary clusters, and in spike- like, terminal inflorescences, the individual flowers subsessile, subtended by several subulate, stellate-hirsute bracts longer than the calyx, the flowers thus appearing involucellate; calyx campanulate, 5-gonous, lobed to about the middle, 6-7 mm long, densely fulvous-stellate-hirsute, moderately acerescent, the lobes broadly triangular, acute, ea 3.5 mm long and 4.5 mm wide at the base; petals obovate, strongly oblique, unguiculate, emarginate at the apex, 8-9 mm long, yellow, the claw densely whitish-stellate-tomentellous; androecium 5-6 mm long, the staminal tube 3-4 mm long, whitish-stellate-puberulus; styles up to 8 mm long, connate basally. Mericarps 7-10, trigonous, muticous or apiculate (?), dorsally convex, 2-2.5 mm long, membranous, smooth, sparsely stellate-puberulus at the apex, dehiscent to the base dorsally; seeds trigonous, ea 1.8 mm long, sparsely puberulus.
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Habit
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Herb suffrutex
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Distribution
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Panama, Guiana and Brazil; wet thickets.
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Specimen
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CANAL ZONE: hills W of the Canal, nr Gatun, Standley 27298 (US). PANAMA: prob. nr Panama City, Duchassaing s.n. (type, fragment F, photo MO, US).
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