Passiflora, also known as passionflower, is a genus of about 550 species of flowering plants, including Passiflora incarnata. Passiflora incarnata is a fast-growing perennial vine with climbing or trailing stems. It is a common wildflower in the southern United States that has bluish-white petals. Passiflora incarnata extract can be taken orally as a natural treatment for anxiety and insomnia due to its significant CNS depressant properties.