Passiflora, known also as the passion flowers or passion vines.
Passion flower is a climbing vine that is native to the southeastern
United States, and Central and South America. It produces regular and usually showy flowers with a distinctive corona. Passion flowers have the most incredible flowers from July to October, usually followed by edible, but not particularly tasty, egg-shaped fruits.
"Passion flower is used for anxiety, including anxiety before surgery.
Some people take passion flower for insomnia, stress, attention
deficit-hyperactivity disorder (ADHD), pain, and many other conditions.
But there is no good scientific research to support these uses.
Passion flower was formerly approved as an over-the-counter sedative and
sleep aid in the U.S., but this approval was withdrawn in 1978 when the
U.S. Food and Drug Administration (FDA) reviewed the class and
manufacturers did not submit evidence of safety and effectiveness." from WebMed
