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(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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ERAGROSTIS MAYPURENSIS
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PlaceOfPublication
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Syn. P1. Glum. 1:276. 1854.
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Synonym
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Poa maypurensis H.B.K. Nov. Gen. & Sp. 1:161. 1816. Poa vahlii Roem. & Schult. Syst. Veg. 2:563. 1817. Eragrostis vahlii Nees, Agrost. Bras. 499. 1829. Eragrostis amoena Presl, Rel. Haenk. 1:275. 1830. Eragrostis panamensis Presl, Rel. Haenk. 1:277. 1830. Megastachya amoena Fourn. Mex. P1. 2:118. 1886. Megastachya panamensis Fourn. Mex. P1. 2:118. 1886.
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Description
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Annual; culms erect or decumbent at the base, 10-40 cm. or sometimes as much as 65 cm. high; sheaths glabrous, shorter than the internodes; blades flat, attenuate, mostly 6-15 cm. long, rarely longer, 2-4 mm. wide, papillose-pilose, especially on the upper surface, or nearly glabrous; panicles 8-15 cm. long, erect, the somewhat distant solitary branches stiffly ascending, spikelet bearing nearly to the base, densely pilose in the axils; spikelets 6-10 mm. long, 8- to 28-flowered, short-pedicellate, somewhat spreading, usually tinged with red or purple; glumes acuminate, as long as the lowest floret; lemmas 2-2.5 mm. long, broad at the base, rather abruptly narrowed above the middle to an acute or acuminate tip.
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Distribution
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Wet or dry savannas, fields, moist thickets, and waste places, southern Mexico to Brazil and Bolivia.
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Specimen
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CHIRIQUI: San Felix, Pittier 5I84; David, Hitchcock 8378. COCLE: Aguadulce, Pittier 485I, 4864. CANAL ZONE: Mt. Hope, Standley 28799; Corozal, Hitchcock 919I; Standley 29026. PANAMA: Rio Indio, Dodge d Allen I7380; Rio Azote Caballo, Dodge, Steyermark d Allen I6857; Abalaba, Killip 4270; Rio Tapia, Hitchcock 22950; Standley 28I65; Bella Vista, Standley 25366; Punta Paitilla, Standley 26267; Rio Tecu'men, Stand- ley 26645, 29395; Matias Hernandez, Pittier 6889, 69I9; Standley 3I859; Pacora, Killip 4I99; Rio Pacora, Killip 4226; Chepo, Pittier 4768; Hunter d Allen 8i.
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