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boroughs (towns) in Union county, northeastern New Jersey, U.S., adjoining Elizabeth on the west. Originally part of Linden until 1894, Roselle was settled before the American Revolution; Abraham Clark, one of New Jersey's signers of the Declaration of Independence, was a native son. Mainly residential suburbs of New York City, both communities have some industry. Manufactures include pumps, paper products, plastics, tools, fire alarms, machinery, and metal products
(Hibiscus sabdariffa), plant of the hibiscus, or mallow, family (Malvaceae), and its fibre, one of the bast fibre group. Roselle is probably native to West Africa and includes H. sabdariffa variety altissima, grown for fibre, and H. sabdariffa variety sabdariffa, cultivated for the edible external portion of its flower (calyx). The plant, known in the West Indies early in the 16th century, was growing in Asia by the 17th century. Extensive cultivation in the Dutch East Indies (now Indonesia) began in the 1920s under a government-subsidized program established to obtain fibre for sugar-sack manufacture.