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(Last Modified On 10/22/2012)
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(Last Modified On 10/22/2012)
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Species
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ANDROPOGON CONDYLOTRICHUS Hochst.
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PlaceOfPublication
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Syn. P1. Glum. 1:377. 1854.
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Synonym
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Andropogon piptatherus Hack. in Mart. Fl. Bras. 23:293. 1883. Sorghum piptatherum Kuntze, Rev. Gen. P1. 2:792. 1891. Amphilophis piptatherus Nash, N. Amer. Fl. 17:127. 1912. Euclasta condylotricha Stapf in Prain, Fl. Trop. Afr. 9:181. 1917.
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Description
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Annual; culms commonly 1-2 m. long, decumbent or straggling, rooting at the nodes, sending up numerous weak branches, the nodes densely bearded, other- wise glabrous; sheaths usually shorter than the internodes, keeled toward the summit, glabrous on the, back, villous in the throat and on the collar; ligule 1 mm. long, membranaceous, with a line of stiff hairs behind it; blades 15-20 cm. long, 4-8 mm. wide, flat, acuminate, sparsely papillose, the margins scabrous; racemes 2-5 cm. long, paniculate, the panicles terminal on the main culm and short branches from the upper sheaths, the panicle branches flexuous, densely villous in the axils; lower pairs of spikelets homogamous; fertile sessile spikelets 4 mm. long, the first glume densely villous, the awn 3-4 cm. long, 2-geniculate, the lower segments brown, tightly twisted, hispidulous, the terminal segment loosely twisted, scabrous; pedicellate spikelets 5-6 mm. long, sparsely papillose-pilose, the keels scabrous.
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Distribution
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Brushy slopes, Mexico and the West Indies to Colombia and Venezuela. Also iri tropical Africa.
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Specimen
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CANAL ZONE: Balboa, Standley 25264, 26423.
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