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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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SETARIA PANICULIFERA (Steud.) Fourn.
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PlaceOfPublication
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Mex. P1. 2:42. 1886.
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Synonym
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Panicum sulcatum Aubl. P1. Guian. 1:50. 1775. Not P. sulcatum Bertol., 1820. Panicum paniculiferum Steud. Syn. PI. Glum. 1:54. 1854. Setaria effusa Fourn. Mex. P1. 2:42. 1886. Chaetochloa sulcata Hitchc. Contr. U. S. Nat. Herb. 17:260. 1913. Setaria sulcata A. Camus, Bull. Mus. Hist. Nat. 30: 108. 1924.
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Description
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Robust perennial; culms erect, 1.5-4 m. high; sheaths keeled toward the summit, papillose or papillose-hispid, especially along the margins and on the collar; blades conspicuously plicate, 0.5-1 m. long, 3-5 cm., or even 10 cm., wide, scabrous, acuminate, narrowed toward the base to the width of the sheath, sometimes petiole-like; panicles narrow or finally loose and open, 40-70 cm. long, the lower branches distant, compound, loosely to rather densely flowered, ascending to spreading, as much as 25 cm. long, the upper shorter, approximate, nearly simple; spikelets 3 mm. long, pointed, the bristles about 15 mm. long; first glume obtuse, 3- to 5-nerved, about half as long as the spikelet, the second acute, 5- to 7-nerved, two-thirds as long as the spikelet; fruit narrow, acute, finely transversely rugose.
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Distribution
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Thickets, river banks and swamps, Mexico and the West Indies to Colombia and Venezuela.
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Specimen
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BOCAS DEL TORO: Changuinola Valley, Dunlap 245. CANAL ZONE: Barro Colorado Island, Bailey d Bailey 382; Gamboa, Pittier 6800; Summit, D. H. Popenoe 25; Bohio, Hitchcock 839I; Ancon, Killip 4025; Ancon Hill, KilliP 4205; Culebra, Hitchcock 7935, 8I22. PANAMA: Chepo River, Killip 4II4. DARIEN: Yape, Allen 859.
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