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(Plants) a malvaceous Old World herbaceous plant, Hibiscus trionum, having pale yellow flowers with a bladder-like calyx. Also called: bladder ketmia
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
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|Noun||1.||flower-of-an-hour - annual weedy herb with ephemeral yellow purple-eyed flowers; Old World tropics; naturalized as a weed in North America|
hibiscus - any plant of the genus Hibiscus
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