moonflower
noun
moon·flow·er ˈmün-ˌflau̇(-ə)r 
: a tropical American morning glory (Ipomoea alba synonym Calonyction aculeatum) with fragrant flowers
also : any of several related plants
Example Sentences
Recent Examples on the Web Despite belonging to the cactus family Cactaceae, the moonflower's stem looks like large flat leaves and snake themselves around host plants, such as trees. 
Elizabeth Gamillo, Smithsonian Magazine, 3 Mar. 2021 The moonflower cactus, Selenicereus wittii, produces a stunning, snowy bloom once a year for only 12 hours. Elizabeth Gamillo, Smithsonian Magazine, 3 Mar. 2021 One species, the Hawaiian moonflower, lives only in the dry forests of Hawaii — but its closest relatives all live in Mexico. Carl Zimmer, New York Times, 12 Apr. 2018 The scientists estimate that the Hawaiian moonflower separated from its relatives — and made its journey across the Pacific — over a million years ago. Carl Zimmer, New York Times, 12 Apr. 2018 Start these ornamental annuals indoors for transplanting outdoors in mid to late May:alyssum, cosmos, cardinal climber, marigolds, nicotiana, moonflower and impatiens. Betty Cahill, The Denver Post, 31 Mar. 2017
Elizabeth Gamillo, Smithsonian Magazine, 3 Mar. 2021 The moonflower cactus, Selenicereus wittii, produces a stunning, snowy bloom once a year for only 12 hours. Elizabeth Gamillo, Smithsonian Magazine, 3 Mar. 2021 One species, the Hawaiian moonflower, lives only in the dry forests of Hawaii — but its closest relatives all live in Mexico. Carl Zimmer, New York Times, 12 Apr. 2018 The scientists estimate that the Hawaiian moonflower separated from its relatives — and made its journey across the Pacific — over a million years ago. Carl Zimmer, New York Times, 12 Apr. 2018 Start these ornamental annuals indoors for transplanting outdoors in mid to late May:alyssum, cosmos, cardinal climber, marigolds, nicotiana, moonflower and impatiens. Betty Cahill, The Denver Post, 31 Mar. 2017 Word History
First Known Use
circa 1909, in the meaning defined above