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Echinodorus uruguayensis
''Echinodorus uruguayensis'' is a plant species in the Alismataceae. It is native to South America (Brazil, Argentina, Paraguay, Uruguay, Chile).〔(Kew World Checklist of Selected Plant Families )〕
==Description==
Submersed leaves (5)-30-50 cm long, blades ribbon-shaped, green or darkly red-brown having undulate margins, (9)-20-30 cm long x 1 - 2 - (3) cm wide, trimmed with distinct pellucid lines. Emersed leaves rare, 20 – 50 cm long, petioles longer than the blades. Blades regularly ovate or oval, on the tip blunt, 7.5 – 13 cm long x 2 - 4.5 cm wide, having distinct pellucid lines. Stem upright or deflexed, (20)-30-(45) cm long, proliferous. Inflorescence racemose, rarely branching in the lower whorl, having (2)-4-(6) whorls containing 6 -12 flowers each. Bracts lanceolate, usually shorter than the pedicels, shallowly connate, 1 - 1.5 cm long. Pedicels 1.5 - 2 – 3 cm long. Corolla white, 1 - 1.5 cm in diameter, stamens 18, achenes 1 - 1.5 mm long, having usually 3 glands in oblique row in the upper part of the body.〔Arechavaleta y Balpardo, José. 1902. Anales del Museo Nacional de Montevideo 4(1): 66–67, t. 2.〕〔Karel Rataj. A New Revision of the Swordplant Genus Echinodorus. Aqua Journal of Ichthyology and Aquatic Biology, Special Publication Nr. 1. March 2004. ISSN 0945-9871〕
Distinct varieties are sold in the trade which may or may not be this plant. Young growth is often reddish in colour.
Often confused with ''E. maior''.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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