"Passion" does not refer to love, but to the Passion of Christ on the cross. In the 15th and 16th centuries, Spanish Christian missionaries discovered this flower and adopted its unique physical structures as symbols of Crucifixion. For example: the radial filaments which can number more than a hundred and vary from flower to flower represent the Crown of Thorns. The ten petals and sepals represent the ten faithful apostles. The top 3 stigmata represent the 3 nails and the lower 5 anthers represent the 5 wounds. The flower has been given names related to this symbolism throughout Europe since that time. In Spain, it is known as Espina de Cristo (Christ's Thorn). In Germany it was once known as Muttergottes-Schuzchen (Mother-of-God's Star). My passion flower grew on my patio during the spring and summer of 2007. Everyday I would have about 2 to 3 blooms which only last a day. The scent is heavenly.