The 10 petals represent the 10 disciples (leaving out Judas and Peter)
The purple ring has 72 filaments, the number of thorns in Jesus' crown
The 3 pistils in the center are the number of nails (they look like nails)
The 5 stamens underneath the pistils, also in the center, represent the number of Jesus' wounds
The spots underneath the leaves are the 33 pieces of silver paid to Judas.
Maybe a little far fetched, but a beautiful flower none the less!