maypop
noun
may·pop ˈmā-ˌpäp 
: a climbing perennial passionflower (Passiflora incarnata) of the southern U.S. with a large ovoid yellow edible but insipid berry
also : its fruit
Example Sentences
Recent Examples on the Web Hopefully, the gorgeous flower of the native maypop (Passiflora incarnata), which is the center’s logo, will be in bloom. 
Sun-Sentinel.com, 27 Sep. 2017
Sun-Sentinel.com, 27 Sep. 2017 Word History
Etymology
alteration of maracock, perhaps from Virginia Algonquian
First Known Use
1851, in the meaning defined above