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''Tithonia rotundifolia'' (Mill.) S.F. Blake〔Blake, Contributions of the Gray Herbarium 52: 41. 1917〕 is a plant in the Asteraceae native to Florida, Louisiana, Mexico, Central America and the West Indies. It is sometimes grown as an ornamental in other places and has become naturalized in some of these locales. It is an annual up to 4 m tall with orange or red flowers. Leaves, despite the epithet, are deltoid to lanceolate, occasionally lobed.〔Flora of North America, vol 21, p 39. 2006.〕 ==Synonyms== *''Tithonia rotundifolia'' (Mill.) S.F. Blake, Contr. Gray Herb. 52: 41. 1917. * *''Tagetes rotundifolia'' Miller, Gard. Dict. ed. 8, Tagetes no. 4. 1768.〔Miller, Garden Dictionary ed. 8, Tagetes no. 4. 1768.〕 * *''Helianthus speciosus'' Hook., Bot. Mag. 61: t. 3295. 1834.〔Hooker, Botanical Magazine 61, t 3295. 1834.〕 * *''Tithonia speciosa'' (Hook.) Griseb., Cat. pl. Cub. 155. 1866.〔A.H.R. Griesbach. 1866. Catalogus plantarum cubensium.〕 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「Tithonia rotundifolia」の詳細全文を読む スポンサード リンク
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