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''Echinodorus macrophyllus'' is a species of aquatic plants in the Alismataceae. It is native to Brazil and Bolivia.〔(Kew World Checklist of Selected Plant Families )〕〔Forzza, R. C. 2010. Lista de espécies Flora do Brasil http://floradobrasil.jbrj.gov.br/2010. Jardim Botânico do Rio de Janeiro, Rio de Janeiro〕 ==Description== Petioles 2 - 3 x longer than the blade, membraneously alate on the base, thin to densely pilose under the blade. Pubescence simple or stellate and absent on young or submerged plants. Blade membraneous, sagittato-cordate or triangularly obovate with long blunt lobes, approximately as wide as the midrib length and widest at the base. Blade (6.5) - 20 – 30 cm long and (7_ - 20 – 30 cm wide with 11 - 13 veins (7 - 15 are possible). No pellucid markings. Stem upright, about twice as long as the leaves, cylindrical, between the whorls triangular, pubescent under whorls as well as petioles.〔(Micheli, Marc in Candolle, Alphonse Louis Pierre Pyramus de & Candolle, Anne Casimir Pyramus de. 1881. Monographiae Phanerogamarum 3: 50 )〕〔Rataj, Karel. 1988. The beautiful Echinodorus macrophyllus. TFH 7/88.〕〔Killeen, T. J. & T. S. Schulenberg. 1998. A biological assessment of Parque Nacional Noel Kempff Mercado, Bolivia. RAP Working Papers 10: 1–372.〕 Inflorescence rarely racemose, usually paniculate having 6 - 13 whorls containing 6 - 9 flowers each. Bracts lanceolate, densely ribbed. Bracts in the first whorl as long as the pedicels, in the other whorls they are a third shorter. Pedicels 1 - 3.5 cm long, sepals broadly ovate, leather-like, densely ribbed, 5 – 6 mm long, petals white, obovate, 15 – 18 mm long, stamens 20 - 24, filaments longer than the anthers, pistils numerous, style longer than the ovary. Aggregate fruit globular, echinate, 6 – 8 mm in diameter. Achenes flat, subovately-cuneate, 3 x 1.5 mm with 3 - 5 (usually 3) lateral ribs and 2 - 3 oblong and further 3 - 5 small round glands. Stylar beak usually straight, approximately 0.75 mm. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Echinodorus macrophyllus」の詳細全文を読む スポンサード リンク
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