[5][6] Petunia integrifolia is native to Brazil, Argentina, Paraguay and Uruguay.

[7] P. integrifolia bears flowers approximately 1.5 inch in diameter and the plant is typically smaller and harder to cultivate than the well-known hybrid bedding Petunia now known correctly as Petunia × atkinsiana.

[8][9] The species was first described as Salpiglossis integrifolia by William Jackson Hooker in 1831.

[10] It was transferred to the genus Petunia as P. integrifolia by Hans Schinz and Albert Thellung in 1915.

The drug is said to cause sensations of levitation and flight – a type of hallucination often associated with the use of the more toxic hallucinogenic plants of the deliriant type; e.g., the tropane-containing Atropa and Hyoscyamus, active constituents of the witches' flying ointments of Medieval and Early Modern Europe.