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PETUNIA
A genus of solanaceousherbs with funnelform or salver-shaped corollas. Two species are general in cultivation, Petunia violacera, with reddish purple flowers, and P. Nyctaginiflora, with white flowers. There are also much hybrid forms with variegated corollas.
Origin: NL, fr. Braz. Petun tobacco.
Source: Websters Vocabulary