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Echinodorus subalatus
''Echinodorus subalatus'' is a species of aquatic plants in the Alismataceae. It is native to Cuba, Mexico, Central America, Guyana, Venezuela, Bolivia, Brazil and Paraguay.〔(Kew World Checklist of Selected Plant Families )〕 It is found naturally growing in mud by the side of streams.
==Description==
Leaves with canaliculate petioles, blades lanceolate, narrowly to broadly ovate, sharp on the tip, decumbent or rarely abrupt on the base, 18 – 24 cm long x 2 – 9 cm wide, with terrestrial forms usually only 10 x 2 cm having 5 - 7 veins and distinct pellucid lines.
Stem below cylindrical, between whorls triangular in cross-section, often alate, 35 – 120 cm long. Inflorescence racemose or paniculate having 4 - 15 whorls. Bracts on base connate, longer than the pedicels (up to 3.5 cm). Pedicels 0.5 – 2 cm long. Sepals 4 – 6 mm long, petals about twice as long, the diameter of the corolla 1.2 - 1.5 cm. Usually 12 stamens, achenes 2 x 1.5 mm with one, rarely 2 glands separated by a rib. Stylar beak bent back - reaching usually 1/4 of the body.〔(Grisebach, August Heinrich Rudolf. 1866. Catalogus Plantarum Cubensium, exhibens collectionem Wrightianam aliasque minores ex insula Cuba missas, quas recensuit A. Grisebach. Lipsiae p 218 )〕〔(Martius, Carl (Karl) Friedrich Philipp von. 1830. Systema Vegetabilium 7(2): 1609, ''Alisma subalatum'' )〕〔CONABIO. 2009. Catálogo taxonómico de especies de México. 1. In Capital Nat. México. CONABIO, Mexico City.〕〔CROW, G. E. 2003. Alismataceae. In: Manual de Plantas de Costa Rica, B.E. Hammel, M.H. Grayum, C. Herrera & N. Zamora (eds.). Monographs in systematic botany from the Missouri Botanical Garden92: 35–42.〕〔Davidse, G., M. Sousa Sánchez & A.O. Chater. 1994. Alismataceae a Cyperaceae. 6: i–xvi, 1–543. In G. Davidse, M. Sousa Sánchez & A.O. Chater (eds.) Flora Mesoamericana. Universidad Nacional Autónoma de México, México, D. F.〕〔Haynes, R. R. & L.B. Holm-Nielsen. 1994. The Alismataceae. Flora Neotropica 64: 1–112.〕
Vegetatively, resembles ''E. andrieuxii,'' nut differs by having distinct pellucid lines, a usually paniculate inflorescence and by achenes with beaks that are at most 1/3 as long as the body.
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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