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Definition of Moonflower

Moonflower: Several plants species with large fragrant flowers that bloom at dusk are referred to as moonflowers. A common name for several night-blooming plants, some with white flowers, include: Night blooming cereus species, including Hylocereus, Datura species, including D. inoxia, Ipomoea species previously separated in Calonyction, including I. alba, and Mentzelia species, including M. pumila..

Source: MedTerms™ Medical Dictionary
Last Editorial Review: 9/20/2012

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