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Tropaeolum majus
''Tropaeolum majus'' (garden nasturtium, Indian cress or monks cress) is a flowering plant in the family Tropaeolaceae, originating in the Andes from Bolivia north to Colombia. The species has become naturalized in parts of the United States (California, New York, Pennsylvania, New Hampshire, Massachusetts and Connecticut).〔(Flora of North America v 7 p 166 )〕 It is of cultivated, probably hybrid origin, with possible parent species including ''T. minus'', ''T. moritzianum'', ''T. peltophorum'', and ''T. peregrinum''.〔Germplasm Resources Information Network: (''Tropaeolum majus'' )〕〔Huxley, A., ed. (1992). ''New RHS Dictionary of Gardening''. Macmillan ISBN 0-333-47494-5.〕 It is not closely related to the genus ''Nasturtium'' (which includes watercress).
==Description==
It is a herbaceous annual plant with trailing stems growing to long or more. The leaves are large, nearly circular, diameter, green to glaucous green above, paler below; they are peltate, with the 5–30 cm long petiole near the middle of the leaf, with several veins radiating to the smoothly rounded or slightly lobed margin. The flowers are 2.5–6 cm diameter, with five petals, eight stamens, and a 2.5–3 cm long nectar spur at the rear; they vary from yellow to orange to red, frilled and often darker at the base of the petals. The fruit is 2 cm broad, three-segmented, each segment with a single large seed 1–1.5 cm long.〔Jepson Flora: (''Tropaeolum majus'' )〕〔Pacific Island Ecosystems at Risk: (''Tropaeolum majus'' )〕
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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