(Last Modified On 10/16/2012)
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(Last Modified On 10/16/2012)
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Species
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ORYZA SATIVA
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PlaceOfPublication
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Sp. Pl. 333. 1753.
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Description
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Annual; culms erect, up to 1 m. high or more; sheaths all longer than the internodes, soft, glabrous, auriculate, the auricles sometimes hispid-ciliate; ligule acuminate, mostly 1-2 cm. long; blades 20-40 cm. long, 1-1.5 cm. wide, acu- minate, scabrous; panicles 10-30 cm. long, narrow, dense, becoming top-heavy; spikelets oblong, 7-10 mm. long; glumes narrow, 2-3 mm. long; lemmas hard, ridged by the lateral nerves, more or less hispid, especially on the keel, awnless or awned, the awn variable.
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Distribution
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Cultivated throughout tropical and warm temperate regions at low altitudes.
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Specimen
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COCLE: Penonome, Williams 7I. CANAL ZONE: Rio Paraiso, Standley 29904. PANAMA: Pacora, Killip 4I98; Taboga, KilliP 4I50; Juan Diaz, Standley 30629. SAN BLAS: Puerto Obaldia, Pittier 4367.
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