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Sagittaria latifolia
''Sagittaria latifolia'' is a plant found in shallow wetlands and is sometimes known as broadleaf arrowhead, duck-potato, Indian potato, or wapato. This plant produces edible tubers that were extensively used by the Indigenous peoples of the Americas.〔
==Description==
''Sagittaria latifolia'' is a variably sized (2 to 20 meters in length) perennial growing in colonies that can cover large amounts of ground. The roots are white and thin, producing white tubers covered with a purplish skin a good distance (0.3 to 1 m long, 0.15 to 0.6 meter deep) from the mother plant. It is green and white. The plant produces rosette of leaves and an inflorescence on a long rigid scape. The leaves are extremely variable, from very thin at 1 to 2 cm to wedge shaped like those of ''Sagittaria cuneata''. Spongy and solid, the leaves have parallel venation meeting in the middle and the extremities. The inflorescence is a raceme composed of large flowers whorled by threes. Usually divided into female flowers on the lower part and male on the upper, although dioecious individuals are also found. Three round, white petals and three very short curved, dark green sepals. Male flowers are easily distinguished from female due to the dissimilarity between the 25 to 50 yellow stamens of the male and the sphere of green carpels of the female ones.〔CONABIO. 2009. Catálogo taxonómico de especies de México. 1. In Capital Nat. México. CONABIO, Mexico City. 〕〔Godfrey, R. K. & J. W. Wooten. 1979. Aquatic and Wetland Plants of Southeastern United States Monocotyledons 1–712. The University of Georgia Press, Athens. 〕〔Haynes, R. R. 1993. Alismataceae. 13: 7–20. In R. McVaugh (ed.) Flora Novo-Galiciana. The University of Michigan, Ann Arbor. 〕〔Hickman, J. C. 1993. The Jepson Manual: Higher Plants of California 1–1400. University of California Press, Berkeley. 〕〔Long, R. W. & O. K. Lakela. 1971. Flora of Tropical Florida i–xvii, 1–962. University of Miami Press, Coral Cables. 〕〔Moss, E. H. 1983. Flora of Alberta (ed. 2) i–xii, 1–687. University of Toronto Press, Toronto. 〕〔Radford, A. E., H. E. Ahles & C. R. Bell. 1968. Manual of the Vascular Flora of the Carolinas i–lxi, 1–1183. University of North Carolina Press, Chapel Hill.〕 〔Voss, E. G. 1972. Gymnosperms and Monocots. i–xv, 1–488. In Michigan Flora. Cranbrook Institute of Science, Bloomfield Hills, Michigan. 〕
The name of Shubenacadie, a community located in central Nova Scotia, Canada, means "abounding in ground nuts" (i.e., broadleaf arrowhead) in the Mi'kmaq language.
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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