Ipomoea alba

Moonflower, a reference photo
Photo: Benjamin Graves from Sasebo, Japan · CC BY 2.0 (licence)

Ipomoea alba, known in English as white tropical morning glory, evening glory, moonflower or moonvine, is a species of night-blooming morning glory, native to tropical and subtropical regions of North and South America, from Argentina to northern Mexico, Arizona, Florida and the West Indies. Though formerly classified as genus Calonyction, species aculeatum, it is now properly assigned to genus Ipomoea, subgenus Quamoclit, section Calonyction.

From Wikipedia, under CC BY-SA 4.0.

Is it poisonous?

We have no record of Moonflower being toxic, poisonous or venomous. That is not proof that it is safe. Never eat, touch or handle a wild plant, mushroom or animal on the strength of an identification; ask someone qualified.

Easily confused with

Classification

Kingdom
Plantae
Phylum
Tracheophyta
Class
Magnoliopsida
Order
Solanales
Family
Convolvulaceae
Genus
Ipomoea
Species
Ipomoea alba

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